Date: Thu, 29 Oct 15 00:20:29 GMT Subject: hep-ph daily 15 new + 14 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: hep-ph@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Tue 27 Oct 15 20:00:00 GMT to Wed 28 Oct 15 20:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1510.08063 Date: Tue, 27 Oct 2015 20:05:34 GMT (3144kb,D) Title: Production Regimes for Self-Interacting Dark Matter Authors: Nicolas Bernal, Xiaoyong Chu, Camilo Garcia-Cely, Thomas Hambye, Bryan Zaldivar Categories: hep-ph Comments: 40 pages, 14 figures \\ In the context of Self-Interacting Dark Matter as a solution for the small-scale structure problems, we consider the possibility that Dark Matter could have been produced without being in thermal equilibrium with the Standard Model bath. We discuss one by one the following various dark matter production regimes of this kind: freeze-in, reannihilation and dark freeze-out. We exemplify how these mechanisms work in the context of the particularly simple Hidden Vector Dark Matter model. In contrast to scenarios where there is thermal equilibrium with the Standard Model bath, we find two regimes which can easily satisfy all the laboratory and cosmological constraints. These are dark freeze-out with 3-to-2 annihilations and freeze-in via a light mediator. In the first regime, different temperatures in the visible and the Dark Matter sectors allow us to avoid the constraints coming from cosmic structure formation as well as the use of non-perturbative couplings to reproduce the observed relic density. For the second regime, different couplings are responsible for Dark Matter relic density and self-interactions, permitting to surpass BBN, X-ray, CMB and direct detection constraints. \\ ( http://arxiv.org/abs/1510.08063 , 3144kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08069 Date: Tue, 27 Oct 2015 20:09:07 GMT (2857kb,D) Title: Compressing the Inert Doublet Model Authors: Nikita Blinov, Jonathan Kozaczuk, David E. Morrissey, Alejandro de la Puente Categories: hep-ph Comments: 30 pages, 9 figures Report-no: SLAC-PUB-16419 \\ The Inert Doublet Model relies on a discrete symmetry to prevent couplings of the new scalars to Standard Model fermions. This stabilizes the lightest inert state, which can then contribute to the observed dark matter density. In the presence of additional approximate symmetries, the resulting spectrum of exotic scalars can be compressed. Here, we study the phenomenological and cosmological implications of this scenario. We derive new limits on the compressed Inert Doublet Model from LEP, and outline the prospects for exclusion and discovery of this model at dark matter experiments, the LHC, and future colliders. \\ ( http://arxiv.org/abs/1510.08069 , 2857kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08071 Date: Tue, 27 Oct 2015 20:09:29 GMT (147kb) Title: GM2Calc: Precise MSSM prediction for $(g - 2)$ of the muon Authors: Peter Athron, Markus Bach, Helvecio G. Fargnoli, Christoph Gnendiger, Robert Greifenhagen, Jae-hyeon Park, Sebastian Pa{\ss}ehr, Dominik St\"ockinger, Hyejung St\"ockinger-Kim, Alexander Voigt Categories: hep-ph Comments: 27 pages, 4 figures, 4 listings Report-no: CoEPP-MN-15-10, DESY 15-193, FTUV-15-6502, IFIC-15-76 \\ We present GM2Calc, a public C++ program for the calculation of MSSM contributions to the anomalous magnetic moment of the muon, $(g-2)_\mu$. The code computes $(g-2)_\mu$ precisely, by taking into account the latest two-loop corrections and by performing the calculation in a physical on-shell renormalization scheme. In particular the program includes a $\tan\beta$-resummation so that it is valid for arbitrarily high values of $\tan\beta$, as well as fermion/sfermion-loop corrections which lead to non-decoupling effects from heavy squarks. GM2Calc can be run with a standard SLHA input file, internally converting the input into on-shell parameters. Alternatively, input parameters may be specified directly in this on-shell scheme. In both cases the input file allows one to switch on/off individual contributions to study their relative impact. This paper also provides typical usage examples not only in conjunctions with spectrum generators and plotting programs but also as C++ subroutines linked to other programs. \\ ( http://arxiv.org/abs/1510.08071 , 147kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08072 Date: Tue, 27 Oct 2015 20:09:34 GMT (165kb,D) Title: Finite Numbers of Sources, Particle Correlationsand the Color Glass Condensate Authors: Larry McLerran and Vladimir Skokov Categories: hep-ph Comments: 19 pages, 3 figures \\ We show that for a finite number of emitting sources, the Color Glass Condensate produces substantial elliptic azimuthal anisotropy, characterized by $v_2$, for two and four particle correlations for momentum greater than or of the order the saturation momentum. The flow produced has the correct semi-quantitative features to describe flow seen in LHC experiments with p-Pb and pp collisions. This flow is induced by quantum mechanical interference between the waves of produced particles, and the flow itself is coupled to fluctuations in the positions of emitting sources. We shortly discuss generalizing these results to odd $v_n$, to correlations involving larger number of particles, and to transverse momentum scales $\Lambda_{\rm QCD} \ll p_T \ll Q_{\rm sat}$. \\ ( http://arxiv.org/abs/1510.08072 , 165kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08083 Date: Tue, 27 Oct 2015 20:19:24 GMT (580kb,D) Title: A 2 TeV $W_R$, Supersymmetry, and the Higgs Mass Authors: Jack H Collins, Wee Hao Ng Categories: hep-ph hep-ex Comments: 30 pages, 9 figures \\ A recent ATLAS search for diboson resonances and a CMS search for $eejj$ resonances which both show excesses with significance around $3 \sigma$ have generated interest in $SU(2)_R$ gauge extensions of the Standard Model with a $W'$ mass around 2 TeV. We investigate the possibility that an $SU(2)_R$ gauge extension of the MSSM compatible with an explanation of the diboson anomaly might give rise to a significant enhancement of the Higgs mass above the MSSM tree level bound $m_{h, \text{tree}} < 90 \; \text{GeV}$ due to non-decoupling $D$-terms. This model contains a vector-like charge $-1/3$ $SU(2)_R$ singlet quark for each generation which mixes significantly with the $SU(2)_R$ doublet quarks, affecting the $W_R$ phenomenology. We find that it is possible to achieve $m_{h, \text{tree}} > 110 \; \text {GeV}$, and this requires that the $Z'$ mass is close to 3 TeV. \\ ( http://arxiv.org/abs/1510.08083 , 580kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08141 Date: Wed, 28 Oct 2015 00:40:33 GMT (155kb,D) Title: Prospects for $\gamma \gamma \to H$ and $\gamma \gamma \to W^{+}W^{-}$ measurements at the FCC-ee Authors: Patricia Rebello Teles and David d'Enterria Categories: hep-ph hep-ex Comments: Proceedings of the conference PHOTON 2015: International Conference on the Structure and the Interactions of the Photon including the 21th International Workshop on Photon-Photon Collisions and the International Workshop on High Energy Photon Colliders, held at Budker Institute of Nuclear Physics (BINP), Siberian Branch of Russian Academy of Science, Novosibirsk, Russia, from 15 to 19 June, 2015 \\ We study the possibilities for the measurement of two-photon production of the Higgs boson (in the $b \bar{b}$ decay channel), and of $W^{+}W^{-}$ pairs (decaying into four jets) in $e^{+}e^{-}$ collisions at the the Future Circular Collider (FCC-ee). The processes are simulated with the PYTHIA and MADGRAPH 5 Monte Carlo codes, using the effective photon approximation for the $e^{+}e^{-}$ photon fluxes, at center-of-mass energies $\sqrt{s} = $ 160 GeV and 240 GeV. The analyses include electron-positron tagging, realistic acceptance and reconstruction efficiencies for the final-state jets, and selection criteria to remove the backgrounds. Observation of both channels is achievable with the expected few ab$^{-1}$ integrated luminosities at FCC-ee. \\ ( http://arxiv.org/abs/1510.08141 , 155kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08184 Date: Wed, 28 Oct 2015 04:04:34 GMT (330kb) Title: Conformal Barrier and Hidden Local Symmetry Constraints: Walking Technirhos in LHC Diboson Channels Authors: Hidenori S. Fukano, Shinya Matsuzaki, Koji Terashi and Koichi Yamawaki Categories: hep-ph hep-ex Comments: latex, 12 eps figures, 35 pages \\ We expand the previous analyses of the conformal barrier on the walking technirho for the 2 TeV diboson excesses reported by the ATLAS collaboration, with a special emphasis on the hidden local symmetry (HLS) constraints. The scale symmetry forbids the new vector boson decay to the 125 GeV Higgs plus $W/Z$ boson, in sharp contrast to the conventional "equivalence theorem" which is invalidated by the conformality. The HLS forbids mixing between the iso-triplet technirho's, $\rho_{\Pi}$ and $\rho_{P}$, of the one-family walking technicolor (with four doublets $N_D=N_F/2=4$), which, without the HLS, would be generated when switching on the standard model gauging. We also present updated analyses of the walking technrho's for the diboson excesses by fully incorporating the constraints from the conformal barrier and the HLS as well as possible higher order effects: still characteristic of the one-family walking technirho is its smallness of the decay width, roughly of order $\Gamma/M_\rho \sim [3/N_C\times 1/N_D] \times [\Gamma/M_\rho]_{\rm QCD} \, \simeq 70\, {\rm GeV}/2\,{\rm TeV}$ ($N_D= N_C=4$), in perfect agreement with the expected diboson resonance with $\Gamma<100\, {\rm GeV}$. The model is so sharply distinguishable from other massive spin 1 models without the conformality and HLS that it is clearly testable at the LHC Run II. If the 2 TeV boson decay to $WH/ZH$ is not observed in the ongoing Run II, then the conformality is operative on the 125 GeV Higgs, strongly suggesting that the 2 TeV excess events are responsible for the walking technirhos and the 125 GeV Higgs is the technidilaton. \\ ( http://arxiv.org/abs/1510.08184 , 330kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08218 Date: Wed, 28 Oct 2015 08:00:01 GMT (9kb) Title: Note on the standard model as an effective theory Authors: Amir H. Fariborz, Renata Jora Categories: hep-ph Comments: 8 pages \\ We present a criterion of consistency derived from the analogy between the partition function of a quantum field theory and that of a statistical system. Based on this we examine a new class of higher dimension operators that might act in the standard model. \\ ( http://arxiv.org/abs/1510.08218 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08223 Date: Wed, 28 Oct 2015 08:26:41 GMT (6kb) Title: About the particle structure and content of the standard model Authors: Renata Jora Categories: hep-ph Comments: 4 pages \\ We determine the number and distribution of the fermion states in the standard model based on the possible fermion representations of the gauge bosons. By extracting the even parity scalars from the fermion states we suggest the existence of multiple Higgses arranged in suitable singlets or multiplets of $SU(3)_L$ and $SU(3)_c$. \\ ( http://arxiv.org/abs/1510.08223 , 6kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08261 Date: Wed, 28 Oct 2015 11:31:56 GMT (1434kb,D) Title: Probing CP violation signal at DUNE in presence of non-standard neutrino interactions Authors: Mehedi Masud, Animesh Chatterjee, Poonam Mehta Categories: hep-ph \\ We discuss the impact of non-standard neutrino matter interactions (NSI) in propagation on the determination of CP phase in the context of the long baseline accelerator experiments such as Deep Underground Neutrino Experiment (DUNE). DUNE will mainly address the issue of CP violation in the leptonic sector. Here we study the role of NSI and its impact on the question of observing the CP violation signal at DUNE. We consider two scenarios of oscillation with three active neutrinos in absence and presence of NSI. We elucidate the importance of ruling out subdominant new physics effects introduced by NSI in inferring CP violation signal at DUNE by considering NSI terms collectively as well as by exploiting the non-trivial interplay of moduli and phases of the NSI terms. We demonstrate the existence of NSI-SI degeneracies which need to be eliminated in reliable manner in order to make conclusive statements about the CP phase. \\ ( http://arxiv.org/abs/1510.08261 , 1434kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08269 Date: Wed, 28 Oct 2015 11:53:43 GMT (134kb) Title: Radiative transitions of charmonium states Authors: Wei-Jun Deng, Li-Ye Xiao, Long-Cheng Gui, and Xian-Hui Zhong Categories: hep-ph hep-ex nucl-th Comments: 17 pages, 6 figures and five tables \\ We systematically study the electromagnetic transitions of the $nS$, $nP$ ($n\leq 3$), and $nD$ ($n\leq 2$) charmonium states with a constituent quark model. Without introducing any free parameters, we obtain a reasonable description of the electromagnetic transitions of the well-established low-lying charmonium states $J/\psi$, $\psi(2S)$, $\chi_{cJ}(1P)$, $h_c(1P)$ and $\psi(3770)$. Our predictions of electromagnetic decay properties for the higher charmonium states are also presented and compared with other model predictions. It is found that some of our predictions are notably different from those of other models, which should be tested in future experiments. In particular, considering the $X(3872)$ resonance as the $\chi_{c1}(2P)$ state, we study its electromagnetic decay properties. Our predicted ratio $\Gamma[X(3872)\to \psi(2S)\gamma]/\Gamma[X(3872)\to J/\psi \gamma]\simeq 4.0$ is consistent with BaBar's measurement. We hope that our study could be useful to understand the electromagnetic decay properties of the discovered charmonium states, and also helpful to look for the missing charmonium states through the electromagnetic transitions. \\ ( http://arxiv.org/abs/1510.08269 , 134kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08270 Date: Wed, 28 Oct 2015 11:54:37 GMT (9kb) Title: Triple Higgs coupling in the most general 2HDM at SM-like scenario Authors: Ilya Ginzburg Categories: hep-ph Comments: 6 pages \\ We consider the triple Higgs coupling for $h(125)$ Higgs boson within the most general 2HDM. At moderate values of parameters, noticeable deviation of this coupling from its SM value is improbable. This deviation can be sizable only if some measurable parameters of the model are exotic. In one of these exotic cases we expect a large deviation of $h(125)\to \gamma\gamma$ width from its SM value. \\ ( http://arxiv.org/abs/1510.08270 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08288 Date: Wed, 28 Oct 2015 12:43:03 GMT (3162kb,D) Title: Poincare covariant pseudoscalar and scalar meson spectroscopy in Wigner-Weyl phase Authors: Thomas Hilger Categories: hep-ph Comments: 10 pages, 20 figures \\ The coupled quark Dyson-Schwinger and meson Bethe-Salpeter equations in rainbow-ladder truncation for spin-0 mesons are solved in Wigner-Weyl phase in the chiral limit and beyond, retaining only the ultraviolet finite terms of the phenomenologically most successful Maris-Tandy interaction. This allows to reveal and discuss the scalar and pseudoscalar meson spectrum in a chirally symmetric setting without additional medium effects. Independent of the current-quark mass, the found solutions are spacelike, i. e. have negative squared masses. The current-quark mass dependence of meson masses and leptonic decay constants is illustrated in Wigner-Weyl phase. \\ ( http://arxiv.org/abs/1510.08288 , 3162kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08305 Date: Wed, 28 Oct 2015 13:42:07 GMT (174kb,D) Title: Properties of Excited Charm and Charm-Strange Mesons Authors: Stephen Godfrey and Kenneth Moats (Carleton University) Categories: hep-ph hep-ex Comments: 36 pages, 2 figures, 47 tables, more detailed results included as supplementary file \\ We calculate the properties of excited charm and charm-strange mesons. We use the relativized quark model to calculate their masses and wavefunctions that we use to calculate radiative transition partial widths and the $^3P_0$ quark-pair-creation model to calculate their strong decay widths. We use these results to make quark model spectroscopic assignments to recently observed charm and charm-strange mesons. In particular we find that the properties of the $D_J(2550)^0$ and $D^*(2600)^0$ are consistent with those of the $2^1S_0(c\bar{u})$ and the $2^3S_1(c\bar{u})$ states respectively, the $D_1^*(2760)^0$, $D_3^*(2760)^0$, and $D_J(2750)^0$ with those of the $1^3D_1(c\bar{q})$, $1^3D_3(c\bar{u})$, and $1D_2(c\bar{u})$ states respectively. We tentatively identify the $D^*_J(3000)^0$ as the $1^3F_4(c\bar{u})$ and favour the $D_J(3000)^0$ to be the $3^1S_0(c\bar{u})$ although we do not rule out the $1F_3$ and $1F_3'$ assignment. For the recently observed charm-strange mesons we identify the $D_{s1}^*(2709)^\pm$, $D_{s1}^*(2860)^-$, and $D_{s3}^*(2860)^-$ as the $2^3S_1(c\bar{s})$, $1^3D_1(s\bar{c})$, and $1^3D_3(s\bar{c})$ respectively and suggest that the $D_{sJ}^*(3044)^\pm$ is most likely the $D_{s1}(2P_1')$ or $D_{s1}(2P_1)$ although it might be the $D_{s2}^*(2^3P_2)$ with the $DK$ final state too small to be observed with current statistics. Based on the predicted properties of excited states, that they not have too large a total width and they have a reasonable branching ratio to simple final states, we suggest states that should be able to be found in the near future. We expect that the tables of properties summarizing our results will be useful for interpreting future observations of charm and charm-strange mesons. \\ ( http://arxiv.org/abs/1510.08305 , 174kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08421 Date: Wed, 28 Oct 2015 19:16:28 GMT (181kb) Title: The impact of the intrinsic charm quark content of the proton on differential $\gamma+c$ cross section Authors: S. Rostami, A. Khorramian, A. Aleedaneshvar, M. Goharipour Categories: hep-ph hep-ex Comments: 16 pages, 8 figures \\ We present a comparative analysis of the impact of the non-perturbative intrinsic charm quark content of the proton on differential cross section of $\gamma +c $-jet in $ pp $ and $ p\bar{p} $ collisions, for the kinematic regions that are sensitive to this contribution. We discuss the $ Q^2 $ evolution of intrinsic quark distributions and present a code which provide these distributions as a function of $ x $ and $ Q^2 $ for any arbitrary Fock state probability. For the $ p\bar{p} $ collisions at the Tevatron, the results are compared with the recent experimental data of D0 at $\sqrt{s} =1.96$ TeV and also predictions for $ pp $ collisions at $\sqrt{s} =8$ TeV and $\sqrt{s} =13$ TeV for the LHC. \\ ( http://arxiv.org/abs/1510.08421 , 181kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1510.02092 (*cross-listing*) Date: Wed, 7 Oct 2015 20:05:48 GMT (49kb,D) Title: Quark Nugget Dark Matter: Comparison with radio observations of nearby galaxies Authors: K. Lawson and A.R. Zhitnitsky Categories: astro-ph.GA astro-ph.HE hep-ph \\ It has been recently claimed that radio observations of nearby spiral galaxies essentially rule out a dark matter source for the galactic haze. Here we consider the low energy thermal emission from a quark nugget dark matter model in the context of microwave emission from the galactic centre and radio observations of nearby Milky Way like galaxies. We demonstrate that observed emission levels do not strongly constrain this specific dark matter candidate across a broad range of the allowed parameter space in drastic contrast with conventional dark matter models based on the WIMP paradigm. \\ ( http://arxiv.org/abs/1510.02092 , 49kb) ------------------------------------------------------------------------------ \\ arXiv:1510.07627 (*cross-listing*) Date: Mon, 26 Oct 2015 20:13:32 GMT (574kb,D) Title: S-Duality and Helicity Amplitudes Authors: Kitran Colwell and John Terning Categories: hep-th hep-ph Comments: 27 pages, 3 figures \\ We examine interacting Abelian theories at low energies and show that holomorphically normalized photon helicity amplitudes transform into dual amplitudes under SL(2,Z) as modular forms with weights that depend on the number of positive and negative helicity photons and on the number of internal photon lines. Moreover, canonically normalized helicity amplitudes transform by a phase, so that even though the amplitudes are not duality invariant, their squares are duality invariant. We explicitly verify the duality transformation at one loop by comparing the amplitudes in the case of an electron and the dyon that is its SL(2,Z) image, and extend the invariance of squared amplitudes order by order in perturbation theory. We demonstrate that S-duality is property of all low-energy effective Abelian theories with electric and/or magnetic charges and see how the duality generically breaks down at high energies. \\ ( http://arxiv.org/abs/1510.07627 , 574kb) ------------------------------------------------------------------------------ \\ arXiv:1510.07646 (*cross-listing*) Date: Mon, 26 Oct 2015 20:20:48 GMT (28kb,D) Title: Quark Nugget Dark Matter: No contradictions with neutrino flux constraints Authors: Kyle Lawson and Ariel R. Zhitnitsky Categories: astro-ph.HE hep-ph hep-th \\ It has recently been claimed that dark matter in form of quark nuggets cannot account for more than 20% of the dark matter density. This claim is based on constraints on the neutrino flux in 20-50 MeV range where the sensitivity of underground neutrino detectors such as Super-Kamiokande have their highest signal-to-noise ratio. We argue that this claim depends crucially on the assumption that the annihilation of visible baryons with an antiquark nugget will generate a neutrino spectrum similar to the conventional baryon-antibaryon annihilation spectrum in vacuum. However, this assumption does not hold for the nuggets in a colour superconducting phase where the lightest pseudo Goldstone mesons (the pions and Kaons) have masses in the 20 MeV range, in contrast with conventional pion mass of roughly 140 MeV. Thus, the decay of these light pseudo Goldstone bosons of the CS phase cannot produce highly energetic neutrinos in the 20-50 MeV energy range. \\ ( http://arxiv.org/abs/1510.07646 , 28kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08065 (*cross-listing*) Date: Tue, 27 Oct 2015 20:07:36 GMT (14kb,D) Title: Marginal Breaking of Conformal SUSY QCD Authors: Kevin F. Cleary and John Terning Categories: hep-th hep-ph Comments: 12 pages, no figures \\ We provide an example of a 4D theory that exhibits the Contino-Pomarol-Rattazzi mechanism, where breaking conformal symmetry by an almost marginal operator leads to a light pseudo-Goldstone boson, the dilaton, and a parametrically suppressed contribution to vacuum energy. We consider SUSY QCD at the edge of the conformal window and break conformal symmetry by weakly gauging a subgroup of the flavor symmetry. Using Seiberg duality we show that for a range of parameters the singlet meson in the dual theory reaches the unitarity bound, however, this theory does not have a stable vacuum. We stabilize the vacuum with soft breaking terms, compute the mass of the dilaton, and determine the range of parameters where the leading contribution to the dilaton mass is from the almost marginal coupling. \\ ( http://arxiv.org/abs/1510.08065 , 14kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08146 (*cross-listing*) Date: Wed, 28 Oct 2015 01:03:00 GMT (12kb) Title: Current status of dynamical modeling of fluctuations at the QCD phase transition in heavy-ion collisions Authors: Marlene Nahrgang Categories: nucl-th hep-ph Comments: Published in the proceedings of the 9th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2014) C14-11-17.2 Journal-ref: PoS CPOD2014 (2014) 032 \\ For a complete understanding of the QCD phase diagram it is important to connect first-principle thermodynamic calculations to experimental data from the RHIC Beam Energy Scan and the future experimental facilities FAIR, GSI, and NICA, Dubna. This can only be achieved by a realistic modeling of the dynamical evolution of critical fluctuations in heavy-ion collisions at the QCD phase transition. In this note I will summarize the current status of these dynamical models and highlight some of the important issues, which need to be addressed in the future. \\ ( http://arxiv.org/abs/1510.08146 , 12kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08195 (*cross-listing*) Date: Wed, 28 Oct 2015 05:14:20 GMT (2738kb,D) Title: Effective Field Theory of Dark Matter from membrane inflationary paradigm Authors: Sayantan Choudhury, Arnab Dasgupta Categories: hep-th astro-ph.CO gr-qc hep-ph Comments: 57 pages, 26 figures, 1 table Report-no: TIFR/TH/15-30 \\ In this article, we have studied the cosmological and particle physics constraints on dark matter relic abundance from effective field theory of inflation using tensor-to-scalar ratio ($r$), in case of Randall-Sundrum single membrane (RSII) paradigm. Using semi-analytical approach we establish a direct connection between the dark matter relic abundance ($\Omega_{DM}h^2$) and primordial gravity waves ($r$), which establishes a precise connection between inflation and generation of dark matter within the framework of effective field theory in RSII membrane. Further assuming the UV completeness of the effective field theory perfectly holds good in the prescribed framework, we have explicitly shown that the membrane tension, $\sigma$, bulk mass scale $M_5$, and cosmological constant $\tilde{\Lambda}_{5}$, in RSII membrane plays the most significant role to establish the connection between dark matter and inflation, using which we have studied the features of various mediator mass scale suppressed effective field theory "relevant operators" induced from the localized $s$, $t$ and $u$ channel interactions. Taking a completely model independent approach, we have studied an exhaustive list of tree-level Feynman diagrams for dark matter annihilation within the prescribed setup and to check the consistency of the obtained results, further we apply the constraints as obtained from recently observed Planck 2015 data and Planck+BICEP2+Keck Array joint datasets. Using all of these derived results we have shown that to satisfy the bound on, $\Omega_{DM}h^2=0.1187\pm 0.0017$, as from Planck 2015 data, it is possible to put further stringent constraint on $r$ within, $0.01\leq r\leq 0.12$, for thermally averaged annihilation cross-section of dark matter, $\langle \sigma v\rangle\approx {\cal O}(10^{-28}-10^{-27}){\rm cm^3 /s}$, which are very useful to constrain various membrane inflationary models. \\ ( http://arxiv.org/abs/1510.08195 , 2738kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08205 (*cross-listing*) Date: Wed, 28 Oct 2015 06:19:06 GMT (436kb) Title: Infinite efficiency of collisional Penrose process: Can over-spinning Kerr geometry be the source of ultra-high-energy cosmic rays and neutrinos ? Authors: Mandar Patil, Tomohiro Harada Categories: gr-qc astro-ph.HE hep-ph hep-th Comments: 51 pages, 10 figures Report-no: RUP-15-23 \\ The origin of the ultra-high-energy particles we receive on the Earth from the outer space such as EeV cosmic rays and PeV neutrinos remains an enigma. All mechanisms known to us currently make use of electromagnetic interaction to accelerate charged particles. In this paper we propose a mechanism exclusively based on gravity rather than electromagnetic interaction. We show that it is possible to generate ultra-high-energy particles starting from particles with moderate energies using the collisional Penrose process in an overspinning Kerr spacetime transcending the Kerr bound only by an infinitesimal amount, i.e., with the Kerr parameter $a=M(1+\epsilon)$, where we take the limit $\epsilon \rightarrow 0^+$. We consider two massive particles starting from rest at infinity that collide at $r=M$ with divergent center-of-mass energy and produce two massless particles. We show that massless particles produced in the collision can escape to infinity with the ultra-high energies exploiting the collisional Penrose process with the divergent efficiency $\eta \sim {1}/{\sqrt{\epsilon}} \rightarrow \infty$. Assuming the isotropic emission of massless particles in the center-of-mass frame of the colliding particles, we show that half of the particles created in the collisions escape to infinity with the divergent energies. To a distant observer, ultra-high-energy particles appear to originate from a bright spot which is at the angular location $\xi \sim {2M}/{r_{obs}}$ with respect to the singularity on the side which is rotating towards the observer. We show that the anisotropy in emission in the center-of-mass frame, which is dictated by the differential cross-section of underlying particle physics process, leaves a district signature on the spectrum of ultra-high-energy massless particles. Thus, it provides a unique probe into fundamental particle physics. \\ ( http://arxiv.org/abs/1510.08205 , 436kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08242 (*cross-listing*) Date: Wed, 28 Oct 2015 10:01:36 GMT (393kb,D) Title: Fluctuations of flow harmonics in Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$~TeV from the Glauber model Authors: Maciej Rybczynski and Wojciech Broniowski Categories: nucl-th hep-ph Comments: 12 pages, 6 figures \\ In the framework of the Glauber model as implemented in {\tt GLISSANDO~2}, we study the fluctuations of flow harmonics in Pb+Pb collisions at the LHC energy of $\sqrt{s_{NN}}=2.76$~TeV. The model with wounded nucleons and the admixture of binary collisions leads to reasonable agreement for the ellipticity and triangularity fluctuations with the experimental data from the ATLAS, ALICE, and CMS collaborations, verifying the assumption that the initial eccentricity is approximately proportional to the harmonic flow of charged particles. While the agreement, in particular at the level of event-by-event distributions of eccentricities/flow coefficients in not perfect, it leads to a fair (at the level of a few percent for all centralities except the most peripheral collisions) description of the scaled standard deviation and the $F$ measure which involve the four-particle cumulants. We also discuss the case of quadrangular flow. Computer scripts that generate our results from the {\tt GLISSANDO 2} simulations are provided. \\ ( http://arxiv.org/abs/1510.08242 , 393kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08253 (*cross-listing*) Date: Wed, 28 Oct 2015 10:41:14 GMT (9kb) Title: Chaotic spin precession in anisotropic universes and fermionic dark matter Authors: A.Yu. Kamenshchik and O.V. Teryaev Categories: gr-qc astro-ph.CO hep-ph hep-th Comments: 10 pages, no figures \\ We consider the precession of a Dirac particle spin in some anisotropic Bianchi universes. This effect is present already in the Bianchi-I universe. In the Bianchi-IX universe it acquires the chaotic character due to the stochasticity of the oscillatory approach to the cosmological singularity. The related helicity flip of fermions in the very early Universe may produce the sterile particles contributing to dark matter. \\ ( http://arxiv.org/abs/1510.08253 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08284 (*cross-listing*) Date: Wed, 28 Oct 2015 12:34:43 GMT (286kb,D) Title: FCC based ep and \mu p colliders Authors: Y. C. Acar, U. Kaya, B. B. Oner and S. Sultansoy Categories: hep-ex hep-ph physics.acc-ph Comments: 9 pages, 1 figure, 6 tables \\ Construction of future electron-positron colliders (or dedicated electron linac) and muon colliders close to Future Circular Collider will give opportunity to utilize highest energy proton and nucleus beams for lepton-hadron and photon-hadron collisions. In this paper we estimate main parameters of the FCC based ep and \mu p colliders. \\ ( http://arxiv.org/abs/1510.08284 , 286kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08369 (*cross-listing*) Date: Wed, 28 Oct 2015 16:26:45 GMT (73kb) Title: How scalar-field dark matter may conspire to facilitate baryogenesis at the electroweak scale Authors: T. Rindler-Daller, B. Li, P.R. Shapiro, M. Lewicki, J.D. Wells Categories: astro-ph.CO gr-qc hep-ph Comments: Presentation at the DPF2015 Meeting of the American Physical Society Division of Particles and Fields, Ann Arbor, Michigan, August 4-8, 2015; 8 pages; 3 figures Report-no: MCTP-15-25 \\ The cosmic evolution of a dark matter model which behaves relativistically in the early Universe is explored. Dark matter is described as a complex scalar field, whose earliest evolution is characterized by a stiff equation of state ($p \simeq \rho$). In this phase, it is the dominant component in the Universe. We present constraints from Big Bang nucleosynthesis and primordial gravity waves from inflation. Also, we study how the associated enhanced expansion rate due to the stiff phase might facilitate a first-order electroweak symmetry breaking phase transition, in light of the recently measured value of the Higgs boson mass. \\ ( http://arxiv.org/abs/1510.08369 , 73kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08384 (*cross-listing*) Date: Wed, 28 Oct 2015 17:27:58 GMT (467kb,D) Title: Direct calculation of hadronic light-by-light scattering Authors: Jeremy Green, Nils Asmussen, Oleksii Gryniuk, Georg von Hippel, Harvey B. Meyer, Andreas Nyffeler, and Vladimir Pascalutsa Categories: hep-lat hep-ph nucl-th Comments: 7 pages, 4 figures. Talk presented at the 33rd International Symposium on Lattice Field Theory (Lattice 2015), 14-18 July 2015, Kobe International Conference Center, Kobe, Japan Report-no: INT-PUB-15-062 \\ We report calculations of hadronic light-by-light scattering amplitudes via lattice QCD evaluation of Euclidean four-point functions of vector currents. These initial results include only the fully quark-connected contribution. Particular attention is given to the case of forward scattering, which can be related via dispersion relations to the $\gamma^* \gamma^* \to$ hadrons cross section, and thus allows lattice data to be compared with phenomenology. We also present a strategy for computing the hadronic light-by-light contribution to the muon anomalous magnetic moment. \\ ( http://arxiv.org/abs/1510.08384 , 467kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08407 (*cross-listing*) Date: Wed, 28 Oct 2015 18:38:29 GMT (2157kb) Title: More on the properties of the first Gribov region in Landau gauge Authors: Axel Maas Categories: hep-lat hep-ph hep-th Comments: 42 pages, 23 figures, 1 table \\ Complete gauge-fixing beyond perturbation theory in non-Abelian gauge theories is a non-trivial problem. This is particularly evident in covariant gauges, where the Gribov-Singer ambiguity gives an explicit formulation of the problem. In practice, this is a problem if gauge-dependent quantities between different methods, especially lattice and continuum methods, should be compared: Only when treating the Gribov-Singer ambiguity in the same way is the comparison meaningful. To provide a better basis for such a comparison the structure of the first Gribov region in Landau gauge, a subset of all possible gauge copies satisfying the perturbative Landau gauge condition, will be investigated. To this end, lattice gauge theory will be used to investigate a two-dimensional projection of the region for SU(2) Yang-Mills theory in two, three, and four dimensions for a wide range of volumes and discretizations. \\ ( http://arxiv.org/abs/1510.08407 , 2157kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08431 (*cross-listing*) Date: Wed, 28 Oct 2015 19:37:10 GMT (219kb,D) Title: Opportunities With Decay-At-Rest Neutrinos From Decay-In-Flight Neutrino Beams Authors: Christopher Grant and Bryce Littlejohn Categories: hep-ex hep-ph nucl-ex physics.ins-det Comments: 6 pages, 3 figures \\ Neutrino beam facilities, like spallation neutron facilities, produce copious quantities of neutrinos from the decay at rest of mesons and muons. The viability of decay-in-flight neutrino beams as sites for decay-at-rest neutrino studies has been investigated by calculating expected low-energy neutrino fluxes from the existing Fermilab NuMI beam facility. Decay-at-rest neutrino production in NuMI is found to be roughly equivalent per megawatt to that of spallation facilities, and is concentrated in the facility's target hall and beam stop regions. Interaction rates in 5 and 60~ton liquid argon detectors at a variety of existing and hypothetical locations along the beamline are found to be comparable to the largest existing decay-at-rest datasets for some channels. The physics implications and experimental challenges of such a measurement are discussed, along with prospects for measurements at targeted facilities along a future Fermilab long-baseline neutrino beam. \\ ( http://arxiv.org/abs/1510.08431 , 219kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1407.8431 replaced with revised version Wed, 28 Oct 2015 15:32:02 GMT (52kb,D) Title: Mueller-Navelet jets in next-to-leading order BFKL: theory versus experiment Authors: Francesco Caporale, Dmitry Yu. Ivanov, Beatrice Murdaca and Alessandro Papa Categories: hep-ph Comments: 20 pages, 11 figures. Misprints removed in Tables 7 and 8 and in one place of the text; figures and conclusions unchanged; version which incorporates the Erratum accepted by Eur. Phys. J. C \\ ( http://arxiv.org/abs/1407.8431 , 52kb) ------------------------------------------------------------------------------ \\ arXiv:1411.1988 replaced with revised version Wed, 28 Oct 2015 15:15:00 GMT (572kb) Title: Correlating $B_q^0 \to \mu^+\mu^-$ and $K_L \to \pi^0\nu\bar\nu$ Decays with Four Generations Authors: Wei-Shu Hou, Masaya Kohda, and Fanrong Xu Categories: hep-ph Comments: 9 pages, 5 figures for V1; for V2 title modified, minor changes performed to figures, part of contents revised to 7 pages, note added, one of the authors' affiliation changed, accepted for the publication of PLB Report-no: CYCU-HEP-14-07 \\ ( http://arxiv.org/abs/1411.1988 , 572kb) ------------------------------------------------------------------------------ \\ arXiv:1412.6000 (*cross-listing*) replaced with revised version Wed, 28 Oct 2015 12:05:13 GMT (72kb,D) Title: Rainbow metric from quantum gravity Authors: Mehdi Assanioussi, Andrea Dapor, Jerzy Lewandowski Categories: gr-qc hep-ph hep-th Comments: 4 pages, 2 figures. Accepted version in PLB DOI: 10.1016/j.physletb.2015.10.043 \\ ( http://arxiv.org/abs/1412.6000 , 72kb) ------------------------------------------------------------------------------ \\ arXiv:1412.8393 replaced with revised version Wed, 28 Oct 2015 19:12:59 GMT (7903kb,D) Title: Heavy Ion Collisions: Achievements and Challenges Authors: Edward Shuryak Categories: hep-ph Comments: v2 is extended version, now intended for publication \\ ( http://arxiv.org/abs/1412.8393 , 7903kb) ------------------------------------------------------------------------------ \\ arXiv:1501.06527 (*cross-listing*) replaced with revised version Wed, 28 Oct 2015 07:53:28 GMT (64kb,D) Title: The current density in quantum electrodynamics in time-dependent external potentials and the Schwinger effect Authors: Jochen Zahn Categories: hep-th hep-ph Comments: 15 pages, 4 figures; v3: Discussion more detailed, interpretation of the results modified, v4: Final version Journal-ref: J. Phys. A 48, No. 47 (2015) 475402 DOI: 10.1088/1751-8113/48/47/475402 \\ ( http://arxiv.org/abs/1501.06527 , 64kb) ------------------------------------------------------------------------------ \\ arXiv:1503.08805 replaced with revised version Wed, 28 Oct 2015 16:50:56 GMT (426kb) Title: Majorana neutrinos with point interactions Authors: Chengfeng Cai, Hong-Hao Zhang Categories: hep-ph Comments: 33 pages, 4 figures, 4 tables \\ ( http://arxiv.org/abs/1503.08805 , 426kb) ------------------------------------------------------------------------------ \\ arXiv:1504.05699 (*cross-listing*) replaced with revised version Tue, 27 Oct 2015 21:20:15 GMT (1020kb) Title: Hadronic and partonic sources of direct photons in relativistic heavy-ion collisions Authors: O. Linnyk, V. Konchakovski, T. Steinert, W. Cassing, E.L. Bratkovskaya Categories: nucl-th hep-ph Comments: 28 pages, 24 figures, v3: recent ALICE data added onto the plots on top of our predictions, final version accepted for publication \\ ( http://arxiv.org/abs/1504.05699 , 1020kb) ------------------------------------------------------------------------------ \\ arXiv:1507.02692 (*cross-listing*) replaced with revised version Wed, 28 Oct 2015 19:49:37 GMT (60kb) Title: On Aspects of Holographic Thermal QCD in the MQGP Limit Authors: Aalok Misra, Karunava Sil Categories: hep-th hep-ph Comments: v2:1+52 pages; LaTeX; title reworded, abstract and paper shortened, portions reworded and restructured but with more explanations, results unchanged; references added. arXiv admin note: text overlap with arXiv:hep-th/0211102 by other authors \\ ( http://arxiv.org/abs/1507.02692 , 60kb) ------------------------------------------------------------------------------ \\ arXiv:1507.04459 replaced with revised version Wed, 28 Oct 2015 04:04:14 GMT (217kb) Title: Possible large $CP$ violation in three body decays of heavy baryon Authors: Zhen-Hua Zhang, Chao Wang, and Xin-Heng Guo Categories: hep-ph Comments: 7 pages, 2 figures, 2nd version accepted by Phys. Lett. B \\ ( http://arxiv.org/abs/1507.04459 , 217kb) ------------------------------------------------------------------------------ \\ arXiv:1507.08385 replaced with revised version Wed, 28 Oct 2015 01:22:50 GMT (610kb,D) Title: Polarization of top quark as a probe of its chromomagnetic and chromoelectric couplings in $tW$ production at the Large Hadron Collider Authors: Saurabh D. Rindani, Pankaj Sharma and Anthony W. Thomas Categories: hep-ph Comments: 25 pages, 13 figures, 2 tables. Matches the Published Version. arXiv admin note: text overlap with arXiv:1211.4075, arXiv:1107.2597 Report-no: Preprint No: ADP-15-24/T926 Journal-ref: JHEP10 (2015) 180 DOI: 10.1007/JHEP10(2015)180 \\ ( http://arxiv.org/abs/1507.08385 , 610kb) ------------------------------------------------------------------------------ \\ arXiv:1508.01484 (*cross-listing*) replaced with revised version Tue, 27 Oct 2015 23:10:50 GMT (272kb,D) Title: Inflationary Potentials from the Exact Renormalisation Group Authors: Sa\v{s}o Grozdanov, David Kraljic, Eirik Eik Svanes Categories: hep-th astro-ph.CO hep-ph Comments: V2: 11 pages, 4 figures. Explanations, two appendices and references added \\ ( http://arxiv.org/abs/1508.01484 , 272kb) ------------------------------------------------------------------------------ \\ arXiv:1509.00371 replaced with revised version Wed, 28 Oct 2015 09:21:31 GMT (528kb,D) Title: Directional Resolution of Dish Antenna Experiments to Search for WISPy Dark Matter Authors: Joerg Jaeckel and Stefan Knirck Categories: hep-ph hep-ex Comments: 13 pages, 6 figures; v2 updated references \\ ( http://arxiv.org/abs/1509.00371 , 528kb) ------------------------------------------------------------------------------ \\ arXiv:1509.07998 (*cross-listing*) replaced with revised version Wed, 28 Oct 2015 17:04:25 GMT (14kb) Title: Cosmic Microwave Background Spectral Distortions from Cosmic String Loops Authors: Madeleine Anthonisen, Robert Brandenberger, Alex Lagu\"e, Ian A. Morrison, Daixi Xia Categories: astro-ph.CO hep-ph Comments: 7 pp. v.2: references added \\ ( http://arxiv.org/abs/1509.07998 , 14kb) ------------------------------------------------------------------------------ \\ arXiv:1510.00965 replaced with revised version Wed, 28 Oct 2015 10:41:09 GMT (2626kb,D) Title: Prospects of discovering new physics in rare charm decays Authors: Svjetlana Fajfer, Nejc Ko\v{s}nik Categories: hep-ph Comments: 13 pages, 3 figures \\ ( http://arxiv.org/abs/1510.00965 , 2626kb) ------------------------------------------------------------------------------ \\ arXiv:1510.08020 replaced with revised version Wed, 28 Oct 2015 17:25:20 GMT (187kb) Title: Radiative corrections of $O(\alpha)$ to $B^- \rightarrow V^0 \ell^- \bar{\nu}_{\ell}$ Authors: S. L. Tostado and G. L\'opez Castro Categories: hep-ph Comments: 20 pages, 3 figures, affiliation corrected and one reference added \\ ( http://arxiv.org/abs/1510.08020 , 187kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- For subscribe options to combined physics archives, e-mail To: physics@arxiv.org, Subject: subscribe ----------------------------------------------------------------------------- For help on viewing and making submissions, see http://arxiv.org/help/