Date: Thu, 27 Jun 13 00:05:59 GMT Subject: hep-ph daily 15 new + 6 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 25 Jun 13 20:00:00 GMT to Wed 26 Jun 13 20:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1306.6079 Date: Tue, 25 Jun 2013 20:00:13 GMT (165kb,D) Title: MeV dark matter in the 3+1+1 model Authors: Jinrui Huang, Ann E Nelson Categories: hep-ph Comments: 8 pages, 5 figures Report-no: LA-UR-13-22756 \\ The existence of light sterile neutrinos in the eV mass range with relatively large mixing angles with the active neutrinos has been proposed for a variety of reasons, including to improve the fit to the LSND and MiniBooNE neutrino oscillation experiments, and reactor disappearance experiments. In ref. Phys. Rev. D 84, 053001 (2011), it was shown that neutrino mixing with a heavier sterile neutrino, in the mass range between 33 eV and several GeV, could significantly affect and improve the agreement between neutrino oscillation models with light sterile neutrinos and short baseline experimental results, allowing for a new source of CP violation in appearance experiments and for different apparent mixing angles in appearance and disappearance experiments. However in refs. Phys. Rev. D 86, 033015 (2012) and JHEP 1204, 083 (2012) it was shown that various collider experiment, supernovae, and cosmological constraints can eliminate most of the parameter region where such a heavy sterile neutrino can have a significant effect on neutrino oscillations. In this paper we consider the effects of allowing a new light scalar in the MeV mass region, which is a potential dark matter candidate, to interact with the sterile neutrinos, and show that the resulting model is a consistent theory of neutrino oscillation anomalies and dark matter which can also potentially explain the INTEGRAL excess of 511 keV gamma rays in the central region of the galaxy. \\ ( http://arxiv.org/abs/1306.6079 , 165kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6088 Date: Tue, 25 Jun 2013 20:56:42 GMT (197kb,D) Title: New Observables for Direct Detection of Axion Dark Matter Authors: Peter W. Graham and Surjeet Rajendran Categories: hep-ph astro-ph.CO hep-ex Comments: 15 pages, 5 figures, 1 table \\ We propose new signals for the direct detection of ultralight dark matter such as the axion. Axion or axion like particle (ALP) dark matter may be thought of as a background, classical field. We consider couplings for this field which give rise to observable effects including a nuclear electric dipole moment, and axial nucleon and electron moments. These moments oscillate rapidly with frequencies accessible in the laboratory, ~ kHz to GHz, given by the dark matter mass. Thus, in contrast to WIMP detection, instead of searching for the hard scattering of a single dark matter particle, we are searching for the coherent effects of the entire classical dark matter field. We calculate current bounds on such time varying moments and consider a technique utilizing NMR methods to search for the induced spin precession. The parameter space probed by these techniques is well beyond current astrophysical limits and significantly extends laboratory probes. Spin precession is one way to search for these ultralight particles, but there may well be many new types of experiments that can search for dark matter using such time-varying moments. \\ ( http://arxiv.org/abs/1306.6088 , 197kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6089 Date: Tue, 25 Jun 2013 21:06:15 GMT (124kb,D) Title: Cosmic Axion Spin Precession Experiment (CASPEr) Authors: Dmitry Budker, Peter W. Graham, Micah Ledbetter, Surjeet Rajendran, Alex Sushkov Categories: hep-ph astro-ph.CO cond-mat.other hep-ex quant-ph Comments: 10 pages, 2 figures, 1 table \\ We propose an experiment to search for QCD axion and axion-like-particle (ALP) dark matter. Nuclei that are interacting with the background axion dark matter acquire time-varying CP-odd nuclear moments such as an electric dipole moment. In analogy with nuclear magnetic resonance, these moments cause precession of nuclear spins in a material sample in the presence of a background electric field. This precession can be detected through high-precision magnetometry. With current techniques, this experiment has sensitivity to axion masses m_a <~ 10^(-9) eV, corresponding to theoretically well-motivated axion decay constants f_a >~ 10^16 GeV. With improved magnetometry, this experiment could ultimately cover the entire range of masses m_a <~ 10^(-6) eV, just beyond the region accessible to current axion searches. \\ ( http://arxiv.org/abs/1306.6089 , 124kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6095 Date: Tue, 25 Jun 2013 21:23:07 GMT (3kb) Title: Constraining Neutrino Velocities and Lorentz Invariance Violation in the Neutrino Sector using the IceCube PeV Neutrino Events Authors: Floyd W. Stecker Categories: hep-ph astro-ph.HE Comments: 2 pages \\ The observation of two PeV-scale neutrino events reported by Ice Cube can, in principle, allow one to place constraints on Lorentz invariance violation (LIV) in the neutrino sector. Using the results of Cohen and Glashow along with previously derived constraints on LIV in the QED sector, I derive a constraint for the difference between putative superluminal neutrino and electron velocities of < ~ 3.1 x 10^{-19} in units where c = 1. I also show that a constraint can be placed on the superluminal neutrino velocity alone by using the previously derived constraint on the electron velocity. This limit is ~ 1.3 x 10^{-15}, about six orders of magnitude better than the time-of-flight constraint from the SN1987A neutrino burst. \\ ( http://arxiv.org/abs/1306.6095 , 3kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6108 Date: Wed, 26 Jun 2013 00:02:37 GMT (44kb,D) Title: Radiatively Induced Type II seesaw and Vector-like 5/3 Charge Quarks Authors: R. Franceschini and R. N. Mohapatra Categories: hep-ph Comments: 25 pages, 2 figures Report-no: UMD-PP-013-007 \\ Understanding small neutrino masses in type II seesaw models with TeV scale SM triplet Higgs bosons requires that its coupling with the standard model Higgs doublet H be dialed down to be order eV to KeV, which is a fine-tuning by a factor of $10^{-11}-10^{-8}$ with respect to the weak scale. We present a SUSY extension of the type II seesaw model where this dimensionful small coupling is radiatively induced, thus making its smallness natural. This model has an exotic vector-like quark doublet which contains a quark X with electric charge 5/3 and a top partner t'. We discuss in details the phenomenology of the model paying special attention to the consequences of the interactions of the the exotic heavy quarks and the scalars of the model. Implications for neutrinoless double beta decay and for the LHC experiments are discussed in detail. Remarkably, in this model both the seesaw triplet and the heavy quarks can manifest at colliders in a host of different signatures, including some that significantly differ from those of the minimal models. Depending on the choice of the hierarchy of couplings, the decay of the heavy quarks and of the seesaw triplet may be subject to bounds that can be tighter or looser than the bounds from standard LHC searches. Furthermore we point out a new short-distance contribution to neutrinoless double beta decay mediated by the simultaneous propagation of the type II triplet and exotic fermions. Remarkably this contribution to the neutrinoless double beta decay is parametrically quite independent from the scale of the generated neutrino mass. \\ ( http://arxiv.org/abs/1306.6108 , 44kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6119 Date: Wed, 26 Jun 2013 02:14:05 GMT (2787kb) Title: Affleck-Dine Baryogenesis and Inflation in Supergravity with Strongly Stabilized Moduli Authors: Marcos A.G. Garcia, Keith A. Olive Categories: hep-ph Comments: 29 pages, 28 figures Report-no: UMN-TH-3211/13, FTPI-MINN-13/21 \\ Constructing models of inflation and/or baryogenesis in the context of N=1 supergravity is known to be difficult as the finite energy density during inflation typically generates large (order the Hubble scale) mass terms. This is the well-known eta problem in inflation. The same effect gives masses along low energy flat directions of the scalar potential thus potentially preventing Affleck-Dine baryogenesis to occur. It has been shown that adding a chiral multiplet S coupled to the inflaton (with a shift symmetry) can serve to stabilize the inflationary potential and allows one to derive simple inflationary potentials without an eta problem. Here, we show that by coupling the same stabilizing field S to the flat direction, may naturally lead to a negative mass-squared contribution to the flat direction thus generating the necessarily large vacuum expectation value needed to realize Affleck-Dine baryogenesis. We trace the evolution of the inflaton, stabilizer, and flat direction field, as well as a Polonyi-like modulus responsible for soft supersymmetry breaking. \\ ( http://arxiv.org/abs/1306.6119 , 2787kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6160 Date: Wed, 26 Jun 2013 08:20:05 GMT (106kb) Title: The radiative decays $B_c^{*\pm} \to B_c^{\pm} \gamma $ with QCD sum rules Authors: Zhi-Gang Wang Categories: hep-ph Comments: 11 pages, 9 figures \\ In this article, we calculate the $B_c^* \to B_c$ electromagnetic form-factor with the three-point QCD sum rules, then study the radiative decays $ B_c^{*\pm} \to B_c^{\pm} \gamma$. Experimentally, we can study the radiative transitions using the decay cascades $B_c^{*\pm}\to B_c^{\pm} \gamma\to J/\psi \ell^{\pm}\bar{\nu}_{\ell} \gamma\to \mu^+ \mu^- \ell^{\pm}\bar{\nu}_{\ell} \gamma$ in the future at the LHCb. \\ ( http://arxiv.org/abs/1306.6160 , 106kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6171 Date: Wed, 26 Jun 2013 09:03:53 GMT (328kb) Title: Opposite parity fermion mixing and baryons $1/2^{\pm}$ Authors: A.E. Kaloshin, E.A. Kobeleva, V.P. Lomov Categories: hep-ph nucl-th Comments: 11 pages, 8 figures \\ We develop a variant of $K$-matrix, which includes the effect of opposite parity fermions (OPF) mixing, and apply it for description of $\pi N$ partial waves $S_{11}$ and $P_{11}$. OPF-mixing leads to appearance of negative energy poles in $K$-matrix and restoration of MacDowell symmetry, relating two partial waves. Joint analysis of PWA results for $S_{11}$ and $P_{11}$ confirms significance of this effect. \\ ( http://arxiv.org/abs/1306.6171 , 328kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6188 Date: Wed, 26 Jun 2013 09:50:58 GMT (35kb) Title: Lattice QCD-based equations of state at vanishing net-baryon density Authors: M. Bluhm, P. Alba, W. Alberico (Turin U. & INFN, Turin), A. Beraudo (CERN), C. Ratti (Turin U. & INFN, Turin) Categories: hep-ph hep-lat nucl-th Comments: Jun 2013. 8 pp. 4 figs. 3 parametrization-tables and weblink \\ We construct a realistic equation of state for QCD matter at vanishing net-baryon density, which is based on recent lattice QCD results at high temperatures combined with a hadron resonance gas model in the low-temperature, confined phase. Partial chemical equilibrium, in which certain particle ratios are fixed at the chemical freeze-out, can be implemented, allowing a description closer to the experimental situation. Given the present uncertainty in the chemical freeze-out temperature, we consider different values within the expected range. The resulting equations of state can be applied in the hydrodynamic modeling of relativistic heavy-ion collisions at the LHC and at the highest RHIC beam energies. Suitable parametrizations of our results are provided. \\ ( http://arxiv.org/abs/1306.6188 , 35kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6200 Date: Wed, 26 Jun 2013 11:02:44 GMT (438kb) Title: Precise Determinations of the Charm and Bottom Quark Masses Authors: S. Bodenstein Categories: hep-ph Comments: Talk given at the International Workshop on Determination of the Fundamental Parameters of QCD. To be published in Mod. Phys. Lett. A \\ A finite-energy sum-rule is presented that allows for the use of combinations of both positive- and inverse-moment integration kernels. The freedom afforded from being able to employ this large class of integration kernels in our sum-rule is then exploited to obtain the values of the charm and bottom masses with minimum total uncertainty. We obtain as our final results m_c(3 GeV)=986(13) MeV and m_b(10 GeV)=3617(25) MeV, which are amongst the most precise values of these parameters obtained by any method. \\ ( http://arxiv.org/abs/1306.6200 , 438kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6219 Date: Wed, 26 Jun 2013 12:23:04 GMT (202kb,D) Title: Scale-Invariant Resonance Tagging in Multijet Final States Authors: Juan Rojo Categories: hep-ph hep-ex Comments: 6 pages, 4 figures, to appear in the proceedings of the XXI International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2013), Marseille, 22-26 April 2013 \\ In this contribution, we study the resonant pair production of heavy particles in hadronic final states using jet substructure techniques. We discuss a recently proposed resonance tagging strategy, which interpolates between the highly boosted and fully resolved regimes, leading to uniform signal efficiencies and background rejection rates for a broad range of masses. With this method, one can efficiently replace independent experimental searches, based on different final state topologies, with a single common analysis. We show using this strategy that the LHC has sensitivity to the enhanced resonant production of Higgs boson pairs decaying into $b\bar{b}$ pairs in generic New Physics scenarios. \\ ( http://arxiv.org/abs/1306.6219 , 202kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6228 Date: Wed, 26 Jun 2013 13:02:00 GMT (187kb,D) Title: Pinning down Higgs triplets at the LHC Authors: Christoph Englert, Emanuele Re, Michael Spannowsky Categories: hep-ph hep-ex Comments: 10 pages, 7 figures Report-no: DHCP/13/90, IPPP/13/45, OUTP-13-12P \\ Extensions of the Standard Model Higgs sector involving weak isotriplet scalars are not only benchmark candidates to reconcile observed anomalies of the recently discovered Higgs-like particle, but also exhibit a vast parameter space, for which the lightest Higgs' phenomenology turns out to be very similar to the Standard Model one. A generic prediction of this model class is the appearance of exotic doubly charged scalar particles. In this paper we adapt existing dilepton+missing energy+jets measurements in the context of SUSY searches to the dominant decay mode $H^{\pm\pm}\to W^\pm W^\pm$ and find that the LHC already starts probing the model's parameter space. A simple modification towards signatures typical of weak boson fusion searches allows us to formulate even tighter constraints with the 7 TeV LHC data set. A corresponding analysis of this channel performed at 14 TeV center of mass energy will constrain the model over the entire parameter space and facilitate potential $H^{\pm\pm}\to W^\pm W^\pm$ discoveries. \\ ( http://arxiv.org/abs/1306.6228 , 187kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6246 Date: Wed, 26 Jun 2013 13:59:58 GMT (1321kb) Title: The influence of a repulsive vector coupling in magnetized quark matter Authors: Robson Z. Denke, Marcus Benghi Pinto Categories: hep-ph Comments: 11 pages, 6 figures \\ We consider two flavor magnetized quark matter in the presence of a repulsive vector coupling ($G_V$) devoting special attention to the low temperature region of the phase diagram to show how this type of interaction counterbalances the effects produced by a strong magnetic field. The most important effects occur at intermediate and low temperatures affecting the location of the critical end point as well as the region of first order chiral transitions. When $G_V=0$ the presence of high magnetic fields ($eB \ge 10 m_\pi^2$) increases the density coexistence region with respect to the case when $B$ and $G_V$ are absent while a decrease of this region is observed at high $G_V$ values and vanishing magnetic fields. Another interesting aspect observed at the low temperature region is that the usual decrease of the coexistence chemical value (Inverse Magnetic Catalysis) at $G_V=0$ is highly affected by the presence of the vector interaction which acts in the opposite way. Our investigation also shows that the presence of a repulsive vector interaction enhances the de Haas-van Alphen oscillations which, for very low temperatures, take place at $eB \lesssim 6 m_\pi^2$. We observe that the presence of a magnetic field, together with a repulsive vector interaction, gives rise to a complex transition pattern since $B$ favors the appearance of multiple solutions to the gap equation whereas $G_V$ turns some metastable solutions into stable ones allowing for a cascade of transitions to occur. \\ ( http://arxiv.org/abs/1306.6246 , 1321kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6298 Date: Wed, 26 Jun 2013 17:36:18 GMT (70kb) Title: Weak radiative corrections to dijet production at the LHC Authors: Stefan Dittmaier, Alexander Huss, Christian Speckner Categories: hep-ph Comments: 6 pages, 4 figures, to appear in the proceedings of the "XXI International Workshop on Deep-Inelastic Scattering and Related Subjects", Marseilles, France, 2013 Report-no: FR-PHENO-2013-006 \\ We summarize the calculation of the weak corrections to dijet production at hadron colliders, comprising tree-level effects of O(\alpha_s\alpha,\alpha^2) and loop corrections of O(\alpha_s^2\alpha). Although suppressed by the small value of the coupling constant \alpha, the weak radiative corrections can become large in the high-energy domain due to the appearance of Sudakov-type and other high-energy logarithms. Generally the corrections to the transverse-momentum distributions are larger by approximately a factor of two compared to the corresponding reach in the invariant-mass distributions, because the invariant-mass distributions are not, unlike the k_T distributions, dominated by the Sudakov regime at high scales. The electroweak tree-level contributions are found to be of the same generic size as the loop corrections. \\ ( http://arxiv.org/abs/1306.6298 , 70kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6308 Date: Wed, 26 Jun 2013 18:19:10 GMT (2009kb) Title: Pad\'e Approximants and Resonance Poles Authors: P. Masjuan and J.J. Sanz-Cillero Categories: hep-ph nucl-th Comments: 12 pages, 17 figures \\ Based on the mathematically well defined Pad\'e Theory, a theoretically safe new procedure for the extraction of the pole mass and width of a resonance is proposed. In particular, thanks to the Montessus de Ballore theorem we are able to unfold the Second Riemann Sheet of an amplitude to search for the position of the resonant pole in the complex plane. The method is systematic and provides a model-independent treatment of the prediction and the corresponding errors of the approximation. \\ ( http://arxiv.org/abs/1306.6308 , 2009kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1306.4339 (*cross-listing*) Date: Tue, 18 Jun 2013 20:19:53 GMT (56kb) Title: Towards MQGP Authors: Mansi Dhuria, Aalok Misra Categories: hep-th hep-ph Comments: 1+45+10(app)+2(refs) pages, LaTeX \\ For the Ouyang embedding we calculate the chemical potential mu_C due to a U(1) gauge field on the w.v. of N_f D7-branes wrapped around a 4-cycle in a resolved warped deformed conifold with (M)N (fractional)D3-branes of [1], and show the possible thermodynamical stability up to linear order in the embedding parameter. In the spirit of [2] we obtain the local type IIA mirror using SYZ mirror symmetry near (theta_{1,2},psi)=(,{0,2pi,,4pi}) and then oxidize the same to M theory. We take two limits of this uplift:(i)g_s,g_sN_f,g_sM^2/N,g_s^2M N_f<<1,g_sM,g_sN>>1 similar to [1] effected by M eps^{-3d/2}, N eps^{-19d},g_s epsn^d,d>0 and eps<=O(0.01);(ii)the `MQGP limit' g_sM^2/N<<1, g_sN>>1 for finite g_s,M, effected by: g_s eps, M eps^{-3d/2},N eps^{-39d},d>0, eps<~1). The second limit is more suited for the study of QGP (See [3]) and can only be addressed in M theory. The uplift gives a black M3-brane solution whose near-horizon geometry near theta_{1,2}=0,pi-branches, preserves 1/4 SUSY. We obtain eta/s=1/4pi for the uplift and the diffusion constant for types IIB/IIA backgrounds comes out to be ~1/T, for both limits. The D=11 SUGRA action up to O(R^4,|G_4|^2) is expected to receive dominant contributions near =0,pi due to poles. Introducing a small-angle cut-off c and using the =c,(pi-c)-local uplift the specific heat from the IR-finite part of the action (c-independent) turns out to be positive indicative of the thermodynamical stability of the uplift. An ALD-gravity-type interpretation can be given to the counter-terms for(i). Its verified that the black M3-brane entropy S r_h^3 from M-theoretic thermodynamical methods and the horizon areas of types IIB/IIA/M3-brane solutions. \\ ( http://arxiv.org/abs/1306.4339 , 56kb) ------------------------------------------------------------------------------ \\ arXiv:1306.5725 (*cross-listing*) Date: Mon, 24 Jun 2013 19:50:44 GMT (4372kb,D) Date (revised v2): Tue, 25 Jun 2013 18:28:15 GMT (4376kb,D) Title: Dark Matter and Pulsar Model Constraints from Galactic Center Fermi-LAT Gamma Ray Observations Authors: Chris Gordon and Oscar Mac\'ias (University of Canterbury) Categories: astro-ph.HE astro-ph.CO astro-ph.GA hep-ph Comments: 20 pages, 13 figures, v2: typos corrected and references added \\ Employing Fermi-LAT gamma ray observations, several independent groups have found excess extended gamma ray emission at the Galactic center (GC). Both, annihilating dark matter (DM) or a population of about 1000 unresolved millisecond pulsars (MSPs) are regarded as well motivated possible explanations. However, there is significant uncertainties in the diffuse galactic background at the GC. We have performed a revaluation of these two models for the extended gamma ray source at the GC by accounting for the systematic uncertainties of the Galactic diffuse emission model. We also marginalize over point source and diffuse background parameters in the region of interest. We show that the excess emission is significantly more extended than a point source. We find that the DM (or pulsars population) signal is larger than the systematic errors and therefore proceed to determine the sectors of parameter space that provide an acceptable fit to the data. We found that a population of 1000-2000 MSPs with parameters consistent with the average spectral shape of Fermi-LAT measured MSPs was able to fit the GC excess emission. For DM, we found that a pure tau+ tau- annihilation channel is not a good fit to the data. But a mixture of tau+ tau- and b bbar with a of order the thermal relic value and a DM mass of around 20 to 60 GeV provides an adequate fit. \\ ( http://arxiv.org/abs/1306.5725 , 4376kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6172 (*cross-listing*) Date: Wed, 26 Jun 2013 09:03:54 GMT (86kb) Title: Macroscopic effect of quantum gravity: graviton, ghost and instanton condensation on horizon scale of the Universe Authors: Leonid Marochnik, Daniel Usikov, Grigory Vereshkov Categories: gr-qc astro-ph.CO hep-ph hep-th Comments: The paper is a shortened and modified version of arXiv:0811.4484. The quantum-gravity phase transitions are described as continuous ones \\ We discuss a special class of quantum gravity phenomena that occur on the scale of the Universe as a whole at any stage of its evolution. These phenomena are a direct consequence of the zero rest mass of gravitons, conformal non-invariance of the graviton field, and one-loop finiteness of quantum gravity. The effects are due to graviton-ghost condensates arising from the interference of quantum coherent states. Each of coherent states is a state of gravitons and ghosts of a wavelength of the order of the horizon scale and of different occupation numbers. The state vector of the Universe is a coherent superposition of vectors of different occupation numbers. To substantiate the reliability of macroscopic quantum effects, the formalism of one-loop quantum gravity is discussed in detail. The theory is constructed as follows: Faddeev-Popov path integral in Hamilton gauge -> factorization of classical and quantum variables, allowing the existence of a self-consistent system of equations for gravitons, ghosts and macroscopic geometry -> transition to the one-loop approximation. The ghost sector corresponding to the Hamilton gauge ensures of one-loop finiteness of the theory off the mass shell. The Bogolyubov-Born-Green-Kirckwood-Yvon (BBGKY) chain for the spectral function of gravitons renormalized by ghosts is used to build a self-consistent theory of gravitons in the isotropic Universe. We found three exact solutions of the equations, consisting of BBGKY chain and macroscopic Einstein's equations. The solutions describe virtual graviton, ghost, and instanton condensates and are reproduced at the level of exact solutions for field operators and state vectors. Each exact solution corresponds to a certain phase state of graviton-ghost substratum. We establish conditions under which a continuous quantum-gravity phase transitions occur between different phases of the graviton-ghost condensate. \\ ( http://arxiv.org/abs/1306.6172 , 86kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6235 (*cross-listing*) Date: Wed, 26 Jun 2013 13:33:55 GMT (1227kb) Title: Universality of nucleon-nucleon short-range correlations and nucleon momentum distributions Authors: Massimiliano Alvioli, Claudio Ciofi degli Atti, Leonid P. Kaptari, Chiara Benedetta Mezzetti, Hiko Morita Categories: nucl-th hep-ph nucl-ex Comments: 32 pages, 19 figures, Review paper to appear in Int. Journal of Mod. Phys. E \\ By analyzing recent microscopic many-body calculations of few-nucleon systems and complex nuclei performed by different groups in terms of realistic nucleon-nucleon (NN) interactions, it is shown that NN short-range correlations (SRCs) have a universal character, in that the correlation hole that they produce in nuclei appears to be almost A-independent and similar to the correlation hole in the deuteron. The correlation hole creates high-momentum components, missing in a mean-field (MF) description and exhibiting several scaling properties and a peculiar spin-isospin structure. In particular, the momentum distribution of a pair of nucleons in spin-isospin state $(ST)=(10)$, depending upon the pair relative ($k_{rel}$) and center-of-mass (c.m.) ($K_{c.m.}$) momenta, as well as upon the angle $\Theta$ between them, exhibits a remarkable property: in the region $k_{rel}\gtrsim 2\,fm^{-1}$ and $K_{c.m.}\lesssim 1\,fm^{-1} $, the relative and c.m. motions are decoupled and the two-nucleon momentum distribution factorizes into the deuteron momentum distribution and an A-dependent momentum distribution describing the c.m. motion of the pair in the medium. The impact of these and other properties of one- and two-nucleon momentum distributions on various nuclear phenomena, on ab initio calculations in terms of low-momentum interactions, as well as on ongoing experimental investigations of SRCs, are briefly commented. \\ ( http://arxiv.org/abs/1306.6235 , 1227kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6307 (*cross-listing*) Date: Wed, 26 Jun 2013 18:17:47 GMT (7kb) Title: The pole of the fermion propagator in a general class of gauges Authors: Ashok K. Das and J. Frenkel Categories: hep-th hep-ph Comments: 4 pages \\ We study the behavior of the pole of the fermion propagator, in QED in $n$-dimensions, in a general class of gauges which interpolate between the covariant, the axial and the Coulomb gauges. We use Nielsen identities, following from the BRST invariance of the theory, to determine the gauge variation of the fermion two point function in this general class of gauges. This allows us to show directly and in a simple manner, to all orders in perturbation theory, that in the absence of infrared divergences and mass shell singularities, the fermion pole mass is gauge independent. \\ ( http://arxiv.org/abs/1306.6307 , 7kb) ------------------------------------------------------------------------------ \\ arXiv:1306.6323 (*cross-listing*) Date: Wed, 26 Jun 2013 19:40:05 GMT (529kb) Title: Mapping Dirac gaugino masses Authors: Steven Abel and Daniel Busbridge Categories: hep-th hep-ph Comments: 37 pages, 4 figures Report-no: IPPP/13/41, DCPT/13/82 \\ We investigate the mapping of Dirac gaugino masses through regions of strong coupling, focussing on SQCD with an adjoint. These models have a well-known Kutasov duality, under which a weakly coupled electric UV description can flow to a different weakly coupled magnetic IR description. We provide evidence to show that Dirac gaugino mass terms map as $\lim_{\mu\rightarrow\infty}\frac{m_{D}}{g \kappa^{\frac{1}{k+1}}} = \lim_{\mu\rightarrow 0} \frac{\tilde m_{{D}}}{\tilde{g} \tilde{\kappa}^{\frac{1}{k+1}}}$ under such a flow, where the coupling $\kappa$ appears in the superpotential of the canonically normalised theory as $W\supset \kappa X^{k+1}$. This combination is an RG-invariant to all orders in perturbation theory, but establishing the mapping in its entirety is not straightforward because Dirac masses are not the spurions of holomorphic couplings in the $\NN=1$ theory. To circumvent this, we first demonstrate that deforming the Kutasov theory can make it flow to an $\NN=2$ theory with parametrically small $\NN=1$ deformations. Using harmonic superspace techniques we then show that the $\NN=1$ deformations can be recovered from electric and magnetic FI-terms that break $\NN=2\rightarrow \NN=1$, and also show that pure Dirac mass terms can be induced by the same mechanism. We then find that the proposed RG-invariant is indeed preserved under $\NN=2$ duality, and thence along the flow to the dual $\NN=1$ Kutasov theories. Possible phenomenological applications are discussed. \\ ( http://arxiv.org/abs/1306.6323 , 529kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:0709.2537 (*cross-listing*) replaced with revised version Wed, 26 Jun 2013 09:09:07 GMT (9kb) Title: Cosmological Acceleration from Virtual Gravitons Authors: Leonid Marochnik (1), Daniel Usikov, Grigory Vereshkov (2)((1) Physics Department, University of Maryland, (2) Research Institute of Physics, Southern Federal University) Categories: gr-qc astro-ph hep-ph hep-th Comments: 6 pages, REVTeX 4 Journal-ref: Found.Phys.38:546-555,2008 DOI: 10.1007/s10701-008-9220-6 \\ ( http://arxiv.org/abs/0709.2537 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1203.6252 replaced with revised version Wed, 26 Jun 2013 08:03:58 GMT (238kb) Title: Analysis of the vector and axialvector $B_c$ mesons with QCD sum rules Authors: Zhi-Gang Wang Categories: hep-ph Comments: 14 pages, 16 figures \\ ( http://arxiv.org/abs/1203.6252 , 238kb) ------------------------------------------------------------------------------ \\ arXiv:1207.4053 replaced with revised version Wed, 26 Jun 2013 11:03:50 GMT (1069kb) Title: Semileptonic Transition of $\Sigma_b \rar \Sigma \mu^+ \mu^-$ in Family Non-universal $Z^\prime$ Model Authors: N. Katirci, K. Azizi Categories: hep-ph Comments: 22 Pages and 10 Figures \\ ( http://arxiv.org/abs/1207.4053 , 1069kb) ------------------------------------------------------------------------------ \\ arXiv:1210.2400 (*cross-listing*) replaced with revised version Tue, 25 Jun 2013 23:07:53 GMT (372kb,D) Title: Isotropic Radio Background from Quark Nugget Dark Matter Authors: Kyle Lawson and Ariel R. Zhitnitsky Categories: astro-ph.CO astro-ph.HE hep-ph nucl-th Comments: matches the published version Journal-ref: Physics Letters B 724 (2013), pp. 17-21 DOI: 10.1016/j.physletb.2013.05.070 \\ ( http://arxiv.org/abs/1210.2400 , 372kb) ------------------------------------------------------------------------------ \\ arXiv:1212.5074 replaced with revised version Wed, 26 Jun 2013 08:36:18 GMT (1822kb,D) Title: Full 1-loop calculation of BR$(B_{s,d}^0\to \ell \bar \ell)$ in models beyond the MSSM with SARAH and SPheno Authors: H. Dreiner, K. Nickel, W. Porod, F. Staub Categories: hep-ph Comments: v3: fixed title v2: extended discussion of input parameters and support of FLHA; new appendix about massless limits of loop functions. Matches version accepted for publication by CPC Report-no: Bonn-TH-2012-34 \\ ( http://arxiv.org/abs/1212.5074 , 1822kb) ------------------------------------------------------------------------------ \\ arXiv:1212.6818 replaced with revised version Wed, 26 Jun 2013 04:26:56 GMT (1530kb,D) Title: Off-diagonal terms in Yukawa textures of the Type-III 2-Higgs doublet model and light charged Higgs boson phenomenology Authors: J. Hern\'andez-S\'anchez, S. Moretti, R. Noriega-Papaqui and A. Rosado Categories: hep-ph Comments: 50 pages, 22 figures; version accepted by JHEP. arXiv admin note: text overlap with arXiv:1203.5769; and text overlap with arXiv:0906.5139, arXiv:1006.0470, arXiv:hep-ph/0309103 by other authors. text overlap with arXiv:1006.0470, arXiv:0906.5139 by other authors Report-no: DCP-12-06; SHEP-12-03 \\ ( http://arxiv.org/abs/1212.6818 , 1530kb) ------------------------------------------------------------------------------ \\ arXiv:1303.1727 (*cross-listing*) replaced with revised version Tue, 25 Jun 2013 23:37:58 GMT (16kb) Title: A dark matter scaling relation from mirror dark matter Authors: R. Foot Categories: astro-ph.CO hep-ph Comments: About 10 pages, some adjustments \\ ( http://arxiv.org/abs/1303.1727 , 16kb) ------------------------------------------------------------------------------ \\ arXiv:1303.1811 replaced with revised version Tue, 25 Jun 2013 23:47:12 GMT (217kb,D) Title: Little flavor: A model of weak-scale flavor physics Authors: Sichun Sun, David B.Kaplan, Ann E. Nelson Categories: hep-ph hep-th Comments: 17 pages, 3 figures. Minor revisions to align with version accepted for publication, including title, and additional discussion about phenomenology Report-no: INT-PUB-13-010, NSF-KITP-13-037 \\ ( http://arxiv.org/abs/1303.1811 , 217kb) ------------------------------------------------------------------------------ \\ arXiv:1303.3710 replaced with revised version Wed, 26 Jun 2013 11:56:56 GMT (9kb) Title: Polarization of the final nucleon in quasi-elastic neutrino scattering and the axial form factor of the nucleon Authors: Samoil Bilenky and Ekaterina Christova Categories: hep-ph Comments: sign error in the longitudinal polarization removed, references added, small changes in the text made, 13 pages, Latex file Journal-ref: J. Phys. G: Nucl. Part. Phys. 40 (2013) 075004 DOI: 10.1088/0954-3899/40/7/075004 \\ ( http://arxiv.org/abs/1303.3710 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1303.7056 replaced with revised version Wed, 26 Jun 2013 16:50:27 GMT (32kb) Title: Phenomenology of S_4 Flavor Symmetric extra U(1) model Authors: Yasuhiro Daikoku, Hiroshi Okada Categories: hep-ph Comments: 33 pages, 7 tables, no figures; version accepted for publication in Physical Review D Report-no: KIAS-P13019 \\ ( http://arxiv.org/abs/1303.7056 , 32kb) ------------------------------------------------------------------------------ \\ arXiv:1304.0386 replaced with revised version Wed, 26 Jun 2013 09:24:20 GMT (84kb,D) Title: Precision vs discovery: a simple benchmark Authors: C\'ecile Caillol, Barbara Clerbaux, Jean-Marie Fr\`ere and Simon Mollet Categories: hep-ph Comments: pdflatex, 8 pages, 4 figs; updated references, added figures presented at IAP-Solvay Workshop "Facing the Scalar Sector", Brussels, May 29-31 Report-no: ULB-TH/13-04 \\ ( http://arxiv.org/abs/1304.0386 , 84kb) ------------------------------------------------------------------------------ \\ arXiv:1304.1992 replaced with revised version Wed, 26 Jun 2013 03:35:57 GMT (101kb) Title: Gamma-ray line from radiative decay of gravitino dark matter Authors: Seng Pei Liew Categories: hep-ph astro-ph.CO Comments: 10 pages, 1 figure; added references, modified figure, expanded discussions, published version Report-no: UT-13-13 Journal-ref: Physics Letters B 724 (2013), pp. 88-91 DOI: 10.1016/j.physletb.2013.06.006 \\ ( http://arxiv.org/abs/1304.1992 , 101kb) ------------------------------------------------------------------------------ \\ arXiv:1305.2114 (*cross-listing*) replaced with revised version Wed, 26 Jun 2013 19:56:10 GMT (529kb,D) Title: Comment on "Irregularity in gamma ray source spectra as a signature of axion-like particles" Authors: Giorgio Galanti, Marco Roncadelli Categories: astro-ph.HE astro-ph.CO hep-ph Comments: revised version with additional criticism, 14 pages, 7 figures, submitted to Comments in Physical Review D \\ ( http://arxiv.org/abs/1305.2114 , 529kb) ------------------------------------------------------------------------------ \\ arXiv:1305.7452 (*cross-listing*) replaced with revised version Wed, 26 Jun 2013 16:53:47 GMT (7241kb) Title: Towards the Chalonge Meudon Workshop 2013. Highlights and Conclusions of the Chalonge Meudon workshop 2012: warm dark matter galaxy formation in agreement with observations Authors: P.L. Biermann, H.J. de Vega, N.G. Sanchez Categories: astro-ph.CO gr-qc hep-ph Comments: 61 pages, 19 figures, latex typos corrected \\ ( http://arxiv.org/abs/1305.7452 , 7241kb) ------------------------------------------------------------------------------ \\ arXiv:1306.0191 (*cross-listing*) replaced with revised version Wed, 26 Jun 2013 03:19:17 GMT (12kb) Title: Note on the production of scale-invariant entropy perturbation in the Ekpyrotic universe Authors: Mingzhe Li Categories: hep-th astro-ph.CO gr-qc hep-ph Comments: 9 pages, references are updated and presentations are improved, the version to appear in PLB Report-no: USTC-ICTS-13-07 \\ ( http://arxiv.org/abs/1306.0191 , 12kb) ------------------------------------------------------------------------------ \\ arXiv:1306.3096 replaced with revised version Tue, 25 Jun 2013 21:29:37 GMT (532kb,D) Title: Production of the X(3872) in charmonia radiative decays Authors: Feng-Kun Guo, Christoph Hanhart, Ulf-G. Mei{\ss}ner, Qian Wang and Qiang Zhao Categories: hep-ph hep-ex Comments: 15 pages, 3 figures. Typos fixed, to appear in Phys. Lett. B \\ ( http://arxiv.org/abs/1306.3096 , 532kb) ------------------------------------------------------------------------------ \\ arXiv:1306.3439 (*cross-listing*) replaced with revised version Wed, 26 Jun 2013 15:18:44 GMT (16kb) Title: Elliptic and triangular flow anisotropy in deuteron-gold collisions at RHIC and proton-lead collisions at the LHC Authors: Guang-You Qin and Berndt M\"uller Categories: nucl-th hep-ph Comments: 5 pages, 3 figures \\ ( http://arxiv.org/abs/1306.3439 , 16kb) ------------------------------------------------------------------------------ \\ arXiv:1306.3493 replaced with revised version Wed, 26 Jun 2013 16:13:07 GMT (92kb) Title: A Heavy Ion Fireball freeze-out Dipion Cocktail for Au-Au Collisions at $\sqrt{s_{NN}}$=200 GeV $p_t$ dependence(Part 2) Authors: Ron S. Longacre Categories: hep-ph nucl-th Report-no: BNL 101074 2013 \\ ( http://arxiv.org/abs/1306.3493 , 92kb) ------------------------------------------------------------------------------ \\ arXiv:1306.3922 replaced with revised version Wed, 26 Jun 2013 08:25:59 GMT (422kb) Title: Higgs-Z-photon Coupling from Effect of Composite Resonances Authors: Haiying Cai Categories: hep-ph Comments: 19 pages, 4 figures, v2. adding one equation \\ ( http://arxiv.org/abs/1306.3922 , 422kb) ------------------------------------------------------------------------------ \\ arXiv:1306.5080 replaced with revised version Wed, 26 Jun 2013 04:56:04 GMT (22kb) Title: Quark sector CP violation of the universal seesaw model Authors: Ryomu Kawasaki, Takuya Morozumi, Hiroyuki Umeeda Categories: hep-ph Comments: 32pages Report-no: HUPD1305 \\ ( http://arxiv.org/abs/1306.5080 , 22kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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/ For a list of archive mirror sites, see http://arXiv.org/servers.html ----------------------------------------------------------------------------- Third-party submissions cause excessive problems. 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