Date: Fri, 27 Apr 18 00:17:35 GMT Subject: hep-ph daily 17 new + 5 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 Wed 25 Apr 18 18:00:00 GMT to Thu 26 Apr 18 18:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1804.09720 Date: Wed, 25 Apr 2018 18:00:01 GMT (9260kb,D) Title: JUNIPR: a Framework for Unsupervised Machine Learning in Particle Physics Authors: Anders Andreassen, Ilya Feige, Christopher Frye, Matthew D. Schwartz Categories: hep-ph stat.ML Comments: 37 pages, 24 figures \\ In applications of machine learning to particle physics, a persistent challenge is how to go beyond discrimination to learn about the underlying physics. To this end, a powerful tool would be a framework for unsupervised learning, where the machine learns the intricate high-dimensional contours of the data upon which it is trained, without reference to pre-established labels. In order to approach such a complex task, an unsupervised network must be structured intelligently, based on a qualitative understanding of the data. In this paper, we scaffold the neural network's architecture around a leading-order model of the physics underlying the data. In addition to making unsupervised learning tractable, this design actually alleviates existing tensions between performance and interpretability. We call the framework JUNIPR: "Jets from UNsupervised Interpretable PRobabilistic models". In this approach, the set of particle momenta composing a jet are clustered into a binary tree that the neural network examines sequentially. Training is unsupervised and unrestricted: the network could decide that the data bears little correspondence to the chosen tree structure. However, when there is a correspondence, the network's output along the tree has a direct physical interpretation. JUNIPR models can perform discrimination tasks, through the statistically optimal likelihood-ratio test, and they permit visualizations of discrimination power at each branching in a jet's tree. Additionally, JUNIPR models provide a probability distribution from which events can be drawn, providing a data-driven Monte Carlo generator. As a third application, JUNIPR models can reweight events from one (e.g. simulated) data set to agree with distributions from another (e.g. experimental) data set. \\ ( https://arxiv.org/abs/1804.09720 , 9260kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09722 Date: Wed, 25 Apr 2018 18:00:01 GMT (17kb) Title: The Three-loop Quark Jet Function Authors: Robin Br\"user, Ze Long Liu, Maximilian Stahlhofen Categories: hep-ph hep-th Comments: 6 pages, no figures Report-no: MITP/18-031 \\ We calculate the massless quark jet function to three-loop order. The quark jet function is a universal ingredient in SCET factorization for many collider and decay processes with quark initiated final state jets. Our three-loop result contributes to the resummation for observables probing the invariant mass of final state quark jets at N$^3$LL$^\prime$. It represents the first complete three-loop result for a factorization ingredient describing collinear radiation. Furthermore it constitutes a major component of the $N$-jettiness subtraction/slicing method at N$^3$LO, which eventually may enable the calculation of fully-differential cross sections with a colorful final state at this order. \\ ( https://arxiv.org/abs/1804.09722 , 17kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09749 Date: Wed, 25 Apr 2018 18:38:50 GMT (69kb) Title: Corrections of two-photon interactions in the fine and hyperfine structure of the P-energy levels of muonic hydrogen Authors: A.E. Dorokhov, N.I. Kochelev, A.P. Martynenko, F.A. Martynenko, A.E. Radzhabov Categories: hep-ph physics.atom-ph Comments: 14 pages, 2 figures \\ In the framework of the quasipotential method in quantum electrodynamics we calculate corrections to the nuclear structure proportional to $r_N^2$ from two-photon exchange amplitudes in the fine and hyperfine structure of P-states in muonic hydrogen, as well as the photon-photon interaction amplitudes, leading to the exchange of the axial vector meson. In constructing the quasipotential of the muon-nucleus interaction, we use the method of projection operators on the states of two particles with a definite spin and total angular momentum. Analytical calculation of the matrix elements is performed and contributions to the fine and hyperfine structure of the $2P_{1/2}$ and $2P_{3/2}$ levels are obtained. \\ ( https://arxiv.org/abs/1804.09749 , 69kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09762 Date: Wed, 25 Apr 2018 19:20:49 GMT (25kb) Title: Study on the PDF comparisons for quarkonium + $\gamma$ production at the LHC and FCC energies Authors: M.M. Machado, G. Gil da Silveira Categories: hep-ph Comments: 4 pages, 5 figures, Poster presented at the XIV International Workshop on Hadron Physics, Florian\'opolis, Brazil, March 2018 \\ The quarkonium plus photon production in coherent hadron-hadron interactions at the LHC is studied using the non-relativistic QCD factorization formalism. We investigate a set of kinematic distributions and compute the total cross sections for $J/\Psi + \gamma $ production. Our results demonstrate the feasibility of such process in the LHC kinematic regime and explore the possibilities for the Future Circular Collider, where higher event yields can be achieved. \\ ( https://arxiv.org/abs/1804.09762 , 25kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09766 Date: Wed, 25 Apr 2018 19:32:12 GMT (591kb,D) Title: Dimension-six electroweak top-loop effects in Higgs production and decay Authors: Eleni Vryonidou, Cen Zhang Categories: hep-ph hep-ex Comments: 39 pages, 9 figures \\ We study the next-to-leading order electroweak corrections to Higgs processes from dimension-six top-quark operators in the Standard Model Effective Field Theory approach. We consider the major production channels, including $WH$, $ZH$, and VBF production at the LHC, and $ZH$, VBF production at future lepton colliders, as well as the major decay channels including $H\to \gamma\gamma, \gamma Z, Wl\nu,Zll,b\bar b,\mu\mu,\tau\tau$. The results show that within the current constraints, top-quark operators can shift the signal strength of the loop-induced processes, i.e. $H\to \gamma\gamma,\gamma Z$, by factors of $\sim\mathcal{O}(1)-\mathcal{O}(10)$, and that of the tree-level processes, i.e. all remaining production and decay channels, by $\sim5-10\%$ at the LHC, and up to $\sim15\%$ at future lepton colliders. This implies that essentially all Higgs channels have started to become sensitive to top-quark couplings, and in particular, Higgs observables at high luminosity LHC as well as future lepton colliders, even below the $t\bar t$ threshold, will improve our knowledge of top-quark couplings. We derive the sensitivities of Higgs measurements to top-quark operators at the high luminosity LHC, using projections for both inclusive and differential measurements. We conclude that treating the dimension-six top-quark sector and the Higgs/electroweak sector separately may not continue to be a good strategy. A global analysis combining Higgs and top-quark measurements is desirable, and our calculation and implementation provide an automatic and realistic simulation tool for this purpose. \\ ( https://arxiv.org/abs/1804.09766 , 591kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09778 Date: Wed, 25 Apr 2018 19:56:57 GMT (1819kb,D) Title: Long-Lived BLSSM Particles at the LHC Authors: W. Abdallah, A. Hammad, A. Kasem, S. Khalil Categories: hep-ph Comments: 18 pages and 10 figures \\ We investigate the collider signatures of neutral and charged Long-Lived Particles (LLPs), predicted by the Supersymmetric $B-L$ extension of the Standard Model (BLSSM), at the Large Hadron Collider (LHC). The BLSSM is a natural extension of the Minimal Supersymmetric Standard Model (MSSM) that can account for non-vanishing neutrino masses. We show that the lightest right-handed sneutrino can be the Lightest Supersymmetric Particle (LSP), while the Next-to-the LSP (NLSP) is either the lightest left-handed sneutrino or the left-handed stau, which are natural candidates for the LLPs. We analyze the displaced vertex signature of the neutral LLP (the lightest left-handed sneutrino), and the charged tracks associated with the charged LLP (the left-handed stau). We show that the production cross sections of our neutral and charged LLPs are relatively large, namely of order ${\cal O}(1)~{\rm fb}$. Thus, probing these particles at the LHC is quite plausible. In addition, we find that the displaced di-lepton associated with the lightest left-handed sneutrino has a large impact parameter that discriminates it from other SM leptons. We also emphasize that the charged track associated with the left-handed stau has a large momentum with slow moving charged tracks, hence it is distinguished from the SM background and therefore it can be accessible at the LHC. \\ ( https://arxiv.org/abs/1804.09778 , 1819kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09835 Date: Wed, 25 Apr 2018 23:39:09 GMT (169kb,D) Title: Type II Seesaw with scalar dark matter in light of AMS-02, DAMPE and Fermi-LAT Authors: Tong Li, Nobuchika Okada, Qaisar Shafi Categories: hep-ph Comments: 16 pages, 3 figures, 3 tables \\ The Standard Model (SM) supplemented by Type II Seesaw and a SM gauge-singlet scalar dark matter (DM) is a very simple framework to incorporate the observed neutrino oscillations and provide a plausible DM candidate. In this framework, the scalar DM naturally has a leptophilic nature with a pair annihilating mainly into the SM SU(2)$_L$ triplet Higgs scalar of Type II Seesaw which, in turn, decay into leptons. In this work, we consider indirect signatures of this leptophilic DM and examine the spectrum of the cosmic ray electron/positron flux from DM pair annihilations in the Galactic halo. Given an astrophysical background spectrum of the cosmic ray electron/positron flux, we find that the contributions from DM annihilations can nicely fit the observed data from the AMS-02, DAMPE and Fermi-LAT collaborations, with a multi-TeV range of DM mass and a boost factor for the DM annihilation cross section of ${\cal O}(1000)$. The boost factor has a slight tension with the Fermi-LAT data for gamma-ray from dwarf spheroidal galaxies, which can be ameliorated with an enhanced local DM density by a factor of about 2. \\ ( https://arxiv.org/abs/1804.09835 , 169kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09836 Date: Wed, 25 Apr 2018 23:52:44 GMT (393kb,D) Title: Heavy Mesons Photoproduction in Peripheral AA Collisions Authors: M. B. Gay Ducati and S. Martins Categories: hep-ph \\ The exclusive photoproduction of the heavy vector mesons $\psi$'s and $Y$'s is investigated in peripheral lead-lead collisions for the energies available at the LHC, $\sqrt{s}=2.76$ TeV and $\sqrt{s}=5.02$ TeV. In order to evaluate the robustness of the light-cone color dipole formalism, previously tested in the ultraperipheral regime. It was calculated the rapidity distribution as well as the nuclear modification factor ($R_{AA}$) for the three centrality classes: 30\%-50\%, 50\%-70\% and 70\%-90\%. The transition from ultraperipheral to peripheral regime was carried out sophisticating the photon flux description and the photonuclear cross section, taking into account the effective interaction area. In our calculations, three scenarios were considered: (scenario 1) the direct application of the usual photon flux and of the photonuclear cross section without any relevant change in relation to the UPC's, (scenario 2) the application of an effective photon flux keeping the photonuclear cross section unchanged and (scenario 3) where it was also considered an effective photonuclear cross section. The results obtained from the three scenarios were compared with the ALICE measurements (only $J/\psi$ at the moment), showing a better agreement with the data in the more complete approach (scenario 3), mainly in the more central regions (30\%-50\% and 50\%-70\%) where the incertainty is smaller. \\ ( https://arxiv.org/abs/1804.09836 , 393kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09837 Date: Thu, 26 Apr 2018 00:16:25 GMT (124kb) Title: $n$-$\bar n$ oscillations and the neutron lifetime Authors: George K. Leontaris, John D. Vergados Categories: hep-ph hep-ex hep-th Comments: 17 pages \\ Neutron-antineutron oscillations are considered in the light of recently proposed particle models, which claim to resolve theneutron lifetime anomaly, indicating the existence of baryon violating $\Delta B=1$ interactions. Possible constraints are derived coming from the non-observation of neutron-antineutron oscillations, which can take place if the dark matter particle produced in neutron decay happens to be a Majorana fermion. It is shown that this can be realised in a simple MSSM extention where only the baryon number violating term $u^cd^cd^c$ is included whilst all other R-parity violating terms are prevented to avoid rapid proton decay. It is demostrated how this scenario can be implemented in a string motivated GUT broken to MSSM by fluxes. \\ ( https://arxiv.org/abs/1804.09837 , 124kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09889 Date: Thu, 26 Apr 2018 05:08:34 GMT (149kb,D) Title: A first survey of the ghost-gluon vertex in the Gribov-Zwanziger framework Authors: B. W. Mintz, L. F. Palhares, S. P. Sorella, A. D. Pereira Categories: hep-ph hep-th Comments: Invited talk presented at the XIV International Workshop on Hadron Physics, Florian\'opolis, Brazil, March 2018 \\ As the restriction of the gauge fields to the Gribov region is taken into account, it turns out that the resulting gauge field propagators display a nontrivial infrared behavior, being very close to the ones observed in lattice gauge field theory simulations. In this work, we explore for the first time a higher correlation function in the presence of the Gribov horizon: the ghost-anti-ghost-gluon interaction vertex, at one-loop level. Our analytical results (within the so-called Refined Gribov Zwanziger theory) are fairly compatible with lattice YM simulations, as well as with solutions from the Schwinger-Dyson equations. This is an indication that the RGZ framework can provide a reasonable description in the infrared not only of gauge field propagators, but also of higher correlation functions, such as interaction vertices. \\ ( https://arxiv.org/abs/1804.09889 , 149kb) ------------------------------------------------------------------------------ \\ arXiv:1804.10011 Date: Thu, 26 Apr 2018 12:10:49 GMT (149kb) Title: The Higgs boson $ZZ$ couplings in the Higgs-strahlung at the ILC Authors: Taras V. Zagoskin and Alexander Yu. Korchin Categories: hep-ph hep-ex Comments: 8 pages, 3 figures \\ We derive the fully differential cross section of the Higgs-strahlung process $f \bar{f} \to Z \to Z (\to f_Z \bar{f}_Z) X (\to f_X \bar{f}_X)$, where $f$, $f_Z$, and $f_X$ are arbitrary fermions and $X$ is a spin-zero particle with arbitrary couplings to $Z$ bosons and fermions. This process with $f = e$ and $X = h$ ($h$ denotes the Higgs boson) is planned to be measured at the ILC. Using the derived fully differential cross section, we can obtain an analytical expression for an observable connected with the Higgs-strahlung and convenient to be measured at the ILC. Thus, as soon as this observable is measured, we will be able to put some constraints on the Higgs boson couplings to a pair of $Z$ bosons. \\ ( https://arxiv.org/abs/1804.10011 , 149kb) ------------------------------------------------------------------------------ \\ arXiv:1804.10017 Date: Thu, 26 Apr 2018 12:31:08 GMT (1048kb,D) Title: The automation of next-to-leading order electroweak calculations Authors: R. Frederix, S. Frixione, V. Hirschi, D. Pagani, H.-S. Shao, M. Zaro Categories: hep-ph Comments: 121 pages, 16 figures Report-no: Nikhef/2018-015, TUM-HEP-1138/18 \\ We present the key features relevant to the automated computation of all the leading- and next-to-leading order contributions to short-distance cross sections in a mixed-coupling expansion, with special emphasis on the first subleading NLO term in the QCD+EW scenario, commonly referred to as NLO EW corrections. We discuss, in particular, the FKS subtraction in the context of a mixed-coupling expansion; the extension of the FKS subtraction to processes that include final-state tagged particles, defined by means of fragmentation functions; and some properties of the complex mass scheme. We combine the present paper with the release of a new version of MadGraph5_aMC@NLO, capable of dealing with mixed-coupling expansions. We use the code to obtain illustrative inclusive and differential results for the 13-TeV LHC. \\ ( https://arxiv.org/abs/1804.10017 , 1048kb) ------------------------------------------------------------------------------ \\ arXiv:1804.10065 Date: Wed, 25 Apr 2018 14:43:29 GMT (1546kb,D) Title: Photons coming from an opaque obstacle as a manifestation of heavy neutrino decays Authors: Matias Reynoso, Ismael Romero and Oscar A. Sampayo Categories: hep-ph Comments: 21 pages, 6 figures, accepted by Phys. ReV. D. arXiv admin note: text overlap with arXiv:1609.07661 \\ Within the framework of physics beyond the standard model we study the possibility that mesons produced in the atmosphere by the cosmic ray flux, decay to heavy Majorana neutrino and these mostly to photons in the low mass region. We study the photon flux produced by sterile Majorana neutrinos ($N$) decaying after passing through a massive and opaque object such as a mountain. In order to model the production of $N$'s in the atmosphere and their decay to photons, we consider the interaction between the Majorana neutrinos and the standard matter as modeled by an effective theory. We then calculate the heavy neutrino flux originated by the decay of mesons in the atmosphere. The surviving photon flux, originated by $N$ decays, is calculated using transport equations that include the effects of Majorana neutrino production and decay. \\ ( https://arxiv.org/abs/1804.10065 , 1546kb) ------------------------------------------------------------------------------ \\ arXiv:1804.10088 Date: Thu, 26 Apr 2018 14:30:19 GMT (55kb,A) Title: The structure of generic anomalous dimensions and no-$\pi$ theorem for massless propagators Authors: P. A. Baikov and K. G. Chetyrkin Categories: hep-ph hep-th Comments: 25 pages \\ Extending an argument of [Baikov:2010hf] for the case of 5-loop massless propagators we prove a host of new exact model-independent relations between contributions proportional to odd and even zetas in generic \MSbar\ anomalous dimensions as well as in generic massless correlators. In particular, we find a new remarkable connection between coefficients in front of $\zeta_3$ and $\zeta_4$ in the 4-loop and 5-loop contributions to the QCD $\beta$-function respectively. It leads to a natural explanation of a simple mechanics behind mysterious cancellations of the $\pi$-dependent terms in one-scale Renormalization Group (RG) invariant Euclidian quantities recently discovered in \cite{Jamin:2017mul}. We give a proof of this no-$\pi$ theorem for a general case of (not necessarily scheme-independent) one-scale massless correlators. All $\pi$-dependent terms in the {\bf six-loop} coefficient of an anomalous dimension (or a $\beta$-function) are shown to be explicitly expressible in terms of lower order coefficients for a general one-charge theory. For the case of a scalar $O(n)$ $\phi^4$ theory all our predictions for $\pi$-dependent terms in 6-loop anomalous dimensions are in full agreement with recent results of [Batkovich:2016jus],[Schnetz:2016fhy],[Kompaniets:2017yct]. \\ ( https://arxiv.org/abs/1804.10088 , 55kb) ------------------------------------------------------------------------------ \\ arXiv:1804.10115 Date: Thu, 26 Apr 2018 15:38:14 GMT (261kb,D) Title: Reheating constraints from decaying inflaton: Minimal inflationary cosmologies Authors: Debaprasad Maity and Pankaj Saha Categories: hep-ph Comments: 23 pages, 11 figures \\ Dynamics of non-standard inflation potential has been gaining significant interest in the recent times. Based on our recent proposal on minimal inflationary cosmologies for non-polynomial plateau potential, in this paper, we perform a detailed reheating constraints analysis considering the perturbative decay of inflaton to radiation and the dark matter. Our present study focuses on constraining the models from reheating analysis specifically taking into account the CMB anisotropy and current dark matter abundance. We have solved the appropriate set of Boltzmann equations for decaying inflaton, radiation, and the dark matter field during reheating and found stringent constraints on the model parameters. Further, we also have explored the possible interesting connection among the dark matter parameter space namely the dark matter annihilation cross-section ($\left<\sigma|v|\right>$), mass $(M_X)$ of a single component dark matter and the inflationary power spectrum $n_s$. \\ ( https://arxiv.org/abs/1804.10115 , 261kb) ------------------------------------------------------------------------------ \\ arXiv:1804.10139 Date: Thu, 26 Apr 2018 16:09:16 GMT (117kb,D) Title: Evidence for maximality of strong interactions from LHC forward data Authors: E. Martynov, B. Nicolescu Categories: hep-ph Comments: 5 two column pages, 5 figures \\ It is important to check if the Froissaron-Maximal Odderon (FMO) approach is the only model in agreement with the LHC data. We therefore generalized the FMO approach by relaxing the $\ln^2s$ constraints both in the even-and odd-under-crossing amplitude. We show that, in spite of a considerable freedom of a large class of amplitudes, the best fits bring us back to the maximality of strong interaction. Moreover, if we leave Odderon Regge pole intercept $\alpha_O(0)$ completely free we find a very good solution for $\alpha_O(0)$ near -1 in agreement with the result of oddballs spectroscopy in QCD based on AdS/CFT correspondence. \\ ( https://arxiv.org/abs/1804.10139 , 117kb) ------------------------------------------------------------------------------ \\ arXiv:1804.10158 Date: Thu, 26 Apr 2018 16:33:12 GMT (1694kb) Title: Susceptibilities of the Amplitude Mode in 2D dilute Boson gas using in O(2) model up to 2-loop order Authors: Ji-Chong Yang and Yu Shi Categories: hep-ph cond-mat.quant-gas Comments: 58 pages, 35 figures \\ We investigate the spectral function of the amplitude mode in 2D Boson gas using $O(2)$ model without large-N expansion at zero temperature limit. We calculate the spectral function with full 2-loop contributions and with higher order contributions included. We find that both the peeks of the spectral function of the longitudinal susceptibility and the scalar susceptibility could show up. We argue that the visibility of the amplitude does not depend on the choice of the longitudinal or scalar susceptibility. We also find that the $O(2)$ model at zero temperature limit cannot explain the disappearance of the response when the weakly interaction limit is approached, which was observed in the experiments. We also find there could be another smaller peek in the spectral function at about $2m_{\sigma}$. \\ ( https://arxiv.org/abs/1804.10158 , 1694kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1804.09826 (*cross-listing*) Date: Wed, 25 Apr 2018 22:45:50 GMT (131kb,D) Title: Emergent Mirror Symmetry in Yang-Mills Vacua Authors: Andrea Addazi, Antonino Marcian\`o, Roman Pasechnik, and George Prokhorov Categories: hep-th gr-qc hep-ph Comments: 5 pages, 2 figures \\ The dynamical cancellation of the vacuum energy of the QCD sector in the infrared regime is a relevant problem for both particle physics and cosmology. We find an argument related to the existence of a $\mathbb{Z}_2$-symmetry for the renormalization group flow derived from the bare Yang-Mills Lagrangian, and show that the cancellation of the vacuum energy may arise motivated both from the renormalization group flow solutions and the effective Yang-Mills action. At the cosmological level, we explore the stability of the electric and magnetic attractor solutions, both within and beyond the perturbation theory, and find that thanks these latter the cancellation between the electric and the magnetic vacua components is achieved at macroscopic space and time separations. This implies the disappearance of the conformal anomaly in the classical limit of an effective Yang-Mills theory. \\ ( https://arxiv.org/abs/1804.09826 , 131kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09898 (*cross-listing*) Date: Thu, 26 Apr 2018 06:03:28 GMT (1413kb,D) Title: Surface tension of quark droplets in compact stars and in the early universe Authors: A. G. Grunfeld and G. Lugones Categories: nucl-th hep-ph Comments: Poster presented at the XIV International Workshop on Hadron Physics, Florian\'opolis, Brazil, March 2018 \\ We review the role of the surface tension of quark matter droplets in astrophysical conditions, focusing specifically on the thermodynamic conditions prevailing in cold neutron stars (NSs), in hot lepton rich proto NSs, and in early universe conditions. We analyze quark matter in chemical equilibrium under weak interactions, which is relevant for understanding the internal composition of hybrid stars, as well as just deconfined quark matter out of chemical equilibrium, which is the relevant thermodynamic state for describing the nucleation process of quark matter in NSs. We explore the role of temperature, density, trapped neutrinos, droplet size and magnetic fields within the multiple reflection expansion formalism (MRE). Quark matter is described within the frame of different effective models: the MIT bag model and the $SU(3)_f$ Nambu-Jona-Lasinio model (NJL), including color superconductivity, neutrino trapping and magnetic fields. We also analyze the deconfinement transition at vanishing chemical potential and finite temperature including the Polyakov loop. We explore some astrophysical consequences of our results. \\ ( https://arxiv.org/abs/1804.09898 , 1413kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09906 (*cross-listing*) Date: Thu, 26 Apr 2018 06:30:57 GMT (588kb) Title: Model-independent Confirmation of the Cosmic Distance Duality Relation Authors: Fulvio Melia Categories: astro-ph.CO astro-ph.HE gr-qc hep-ph Comments: 16 pages, 4 figures, 1 table \\ The cosmic distance duality (CDD) relation (also known as the Etherington relation) plays a crucial role in a wide assortment of cosmological measurements. Attempts at confirming it observationally have met with mixed results, though the general consensus appears to be that the data do support its existence in nature. A common weakness with past approaches has been their reliance on a specific cosmological model, or on measurements of the luminosity distance to Type Ia SNe, which introduces a model dependence in spite of beliefs to the contrary. Confirming that the CDD is actually realized in the cosmos is crucial because its violation would require exotic new physics. In this paper, we present a true model-independent study of the CDD based on the observed angular size of compact quasar cores and a Gaussian Process reconstruction of the HII galaxy Hubble diagram---without the assumption of any background cosmology. In so doing, we confirm at a very high level of confidence that the angular-diameter and luminosity distances do indeed satisfy the CDD. We demonstrate the potential power of this result by utilizing it in a comparative test of two competing cosmological models---the R_h=ct universe and LCDM---and show that R_h=ct is favoured by the CDD data with a likelihood ~82.3% compared with ~17.7% for the standard model. \\ ( https://arxiv.org/abs/1804.09906 , 588kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09942 (*cross-listing*) Date: Thu, 26 Apr 2018 08:51:17 GMT (54kb,D) Title: On the Universality of the Chern-Simons Diffusion Rate Authors: Francesco Bigazzi, Aldo L. Cotrone, Flavio Porri Categories: hep-th hep-ph Comments: 27 pages, 1 figure \\ We prove the universality of the Chern-Simons diffusion rate - a crucial observable for the chiral magnetic effect - in a large class of planar strongly correlated gauge theories with dual string description. When the effects of anomalies are suppressed, the diffusion rate is simply given in terms of temperature, entropy density and gauge coupling, with a universal numerical coefficient. We show that this result holds, in fact, for all the top-down holographic models where the calculation has been performed in the past, even in presence of magnetic fields and anisotropy. We also extend the check to further well known models for which the same computation was lacking. Finally we point out some subtleties related to the definition of the Chern-Simons diffusion rate in the presence of anomalies. In this case, the usual definition of the rate - a late time limit of the imaginary part of the retarded correlator of the topological charge density - would give an exactly vanishing result, due to its relation with a non-conserved charge correlator. We confirm this observation by explicit holographic computations on generic isotropic black hole backgrounds. Nevertheless, a non-trivial Chern-Simons relaxation time can in principle be extracted from a quasi-normal mode calculation. \\ ( https://arxiv.org/abs/1804.09942 , 54kb) ------------------------------------------------------------------------------ \\ arXiv:1804.10180 (*cross-listing*) Date: Thu, 26 Apr 2018 17:27:49 GMT (780kb,D) Title: Probing Decoupling in Dark Sectors with the Cosmic Microwave Background Authors: Gongjun Choi, Chi-Ting Chiang, Marilena LoVerde Categories: astro-ph.CO hep-ph Comments: 29 pages, 7 figures Report-no: YITP-SB-18-09 \\ The acoustic peaks in the angular power spectrum of cosmic microwave background (CMB) temperature and polarization anisotropies play an important role as a probe of the nature of new relativistic particles contributing to the radiation density in the early universe, parametrized by $\Delta N_{eff}$. The amplitude and phase of the acoustic oscillations provide information about whether the extra species are free-streaming particles, like neutrinos, or tightly-coupled, like the photons, during eras probed by the CMB. On the other hand, some extensions of the Standard Model produce new relativistic particles that decouple from their own non-gravitational interactions after neutrinos, but prior to photons. We study the signature of new relativistic species that decouple during this intermediate epoch. We argue that the decoupling species will cause a scale-dependent change in the amplitude and phase shift of the acoustic oscillations, different from the usual constant shifts on small scales. For intermediate decoupling times, the phase and amplitude shifts depend not only on $\Delta N_{eff}$ but the redshift $z_{dec,X}$ at which the new species decoupled. For $\Delta N_{eff} >0.334$, a Stage IV CMB experiment could determine $N_{eff}$ at the percent level and $z_{dec,X}$ at the $\sim 10\%$ level. For smaller values, $\Delta N_{eff}\sim 0.1$, constraints on $z_{dec,X}$ weaken but remain $\sim 20-50\%$ for $z_{dec,X} \sim \mathcal{O}(10^3-10^4)$. As an application, we study the contributions to $\Delta N_{eff}$ and determine the $z_{dec,X}$ values for simple implementations of the so-called $N$naturalness model. \\ ( https://arxiv.org/abs/1804.10180 , 780kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1510.07598 (*cross-listing*) replaced with revised version Thu, 26 Apr 2018 13:25:55 GMT (17kb) Title: Large-N(c) limit reduces the number of independent few-body parity-violating low-energy constants in pionless effective field theory Authors: Matthias R. Schindler, Roxanne P. Springer, Jared Vanasse Categories: nucl-th hep-ph Comments: 11 pages, corrected missing factors of $\sin^2 \theta_W$; conclusions unchanged Journal-ref: Phys. Rev. C 93, 025502 (2016) DOI: 10.1103/PhysRevC.93.025502 \\ ( https://arxiv.org/abs/1510.07598 , 17kb) ------------------------------------------------------------------------------ \\ arXiv:1705.05610 replaced with revised version Thu, 26 Apr 2018 13:54:46 GMT (102kb) Title: Kira - A Feynman Integral Reduction Program Authors: Philipp Maierhoefer, Johann Usovitsch, Peter Uwer Categories: hep-ph Comments: 37 pages, 3 figures \\ ( https://arxiv.org/abs/1705.05610 , 102kb) ------------------------------------------------------------------------------ \\ arXiv:1710.02446 (*cross-listing*) replaced with revised version Thu, 26 Apr 2018 12:51:49 GMT (3kb,D) Title: Could Bert, Ernie and Big Bird be 13 billion years old? Authors: Guido Barbiellini Categories: astro-ph.HE hep-ph Comments: Draft to stimulate discussion on the subject \\ ( https://arxiv.org/abs/1710.02446 , 3kb) ------------------------------------------------------------------------------ \\ arXiv:1710.02492 (*cross-listing*) replaced with revised version Thu, 26 Apr 2018 13:07:00 GMT (989kb,D) Title: Detectability of dark matter subhalos by means of the GAMMA-400 telescope Authors: A. E. Egorov, A. M. Galper, N. P. Topchiev, A. A. Leonov, S. I. Suchkov, M. D. Kheymits, and Yu. T. Yurkin Categories: astro-ph.HE hep-ph Comments: Was presented at International Symposium on Cosmic Rays and Astrophysics (ISCRA-2017), 20-22 June 2017, Moscow, Russia \\ ( https://arxiv.org/abs/1710.02492 , 989kb) ------------------------------------------------------------------------------ \\ arXiv:1712.00372 (*cross-listing*) replaced with revised version Thu, 26 Apr 2018 15:58:51 GMT (4179kb,D) Title: Bayesian analysis of the break in DAMPE lepton spectra Authors: Jia-Shu Niu, Tianjun Li, Ran Ding, Bing Zhu, Hui-Fang Xue, Yang Wang Categories: astro-ph.HE hep-ph Comments: 17 pages, 12 figures. PRD version Journal-ref: Physical Review D 97, 083012 (2018) DOI: 10.1103/PhysRevD.97.083012 \\ ( https://arxiv.org/abs/1712.00372 , 4179kb) ------------------------------------------------------------------------------ \\ arXiv:1712.03539 (*cross-listing*) replaced with revised version Thu, 26 Apr 2018 06:36:58 GMT (58kb,AD) Title: Cyclic Mario Worlds -- Color-Decomposition for One-Loop QCD Authors: Gregor K\"alin Categories: hep-th hep-ph Comments: 19 pages + refs, 1 figure, 2 tables; v2 fixing typos, adding clarifications, journal version Report-no: UUITP-48/17 \\ ( https://arxiv.org/abs/1712.03539 , 58kb) ------------------------------------------------------------------------------ \\ arXiv:1712.09598 replaced with revised version Thu, 26 Apr 2018 11:46:19 GMT (807kb,D) Title: Dark Matter Signals at the LHC from a 3HDM Authors: A. Cordero, J. Hernandez-Sanchez, V. Keus, S.F. King, S. Moretti, D. Rojas, D. Sokolowska Categories: hep-ph Comments: The version appearing in JHEP \\ ( https://arxiv.org/abs/1712.09598 , 807kb) ------------------------------------------------------------------------------ \\ arXiv:1712.09922 replaced with revised version Thu, 26 Apr 2018 14:15:04 GMT (157kb,D) Title: Low-Scale Seesaw and the CP Violation in Neutrino Oscillations Authors: J. T. Penedo, S. T. Petcov and Tsutomu T. Yanagida Categories: hep-ph Comments: 29 pages, 3 figures, 3 tables; typos corrected; matches published version Report-no: SISSA 60/2017/FIS, IPMU17-0186 Journal-ref: Nucl. Phys. B 929 (2018) 377-396 DOI: 10.1016/j.nuclphysb.2018.02.018 \\ ( https://arxiv.org/abs/1712.09922 , 157kb) ------------------------------------------------------------------------------ \\ arXiv:1801.06467 replaced with revised version Thu, 26 Apr 2018 16:47:11 GMT (1073kb,D) Title: Model-Independent $\bar\nu_{e}$ Short-Baseline Oscillations from Reactor Spectral Ratios Authors: S. Gariazzo, C. Giunti, M. Laveder, Y.F. Li Categories: hep-ph hep-ex nucl-ex Comments: 10 pages; analysis improved by taking into account the uncertainties of the reactor fission fractions \\ ( https://arxiv.org/abs/1801.06467 , 1073kb) ------------------------------------------------------------------------------ \\ arXiv:1802.00990 replaced with revised version Thu, 26 Apr 2018 16:24:37 GMT (1220kb,D) Title: Renormalization-Group Equations of Neutrino Masses and Flavor Mixing Parameters in Matter Authors: Zhi-zhong Xing, Shun Zhou, Ye-Ling Zhou Categories: hep-ph hep-ex Comments: 22 pages, 8 figures, more discussions added, to be published in JHEP \\ ( https://arxiv.org/abs/1802.00990 , 1220kb) ------------------------------------------------------------------------------ \\ arXiv:1802.01247 (*cross-listing*) replaced with revised version Thu, 26 Apr 2018 09:26:53 GMT (111kb,D) Title: Are there really conformal frames? Uniqueness of affine inflation Authors: Hemza Azri Categories: gr-qc astro-ph.HE hep-ph hep-th Comments: To appear in Int. J. Mod. Phys. D as a Review Article, 44 pages, 1 table and 2 figures \\ ( https://arxiv.org/abs/1802.01247 , 111kb) ------------------------------------------------------------------------------ \\ arXiv:1802.07269 replaced with revised version Wed, 25 Apr 2018 18:54:19 GMT (91kb,D) Title: Late-time magnetogenesis driven by ALP dark matter and dark photon Authors: Kiwoon Choi, Hyungjin Kim, Toyokazu Sekiguchi Categories: hep-ph astro-ph.CO Comments: 6 pages, 2 figures; discussions rearranged, minor numerical errors fixed, conclusion unchanged Report-no: CTPU-PTC-18-04, RESCEU-4/18 \\ ( https://arxiv.org/abs/1802.07269 , 91kb) ------------------------------------------------------------------------------ \\ arXiv:1803.01871 replaced with revised version Thu, 26 Apr 2018 13:01:51 GMT (32kb) Title: Hydrodynamic fluctuations from a weakly coupled scalar field Authors: G. Jackson, M. Laine Categories: hep-ph astro-ph.CO Comments: 5 pages. v2: minor clarifications, published version Journal-ref: Eur.Phys.J.C 78 (2018) 304 DOI: 10.1140/epjc/s10052-018-5791-3 \\ ( https://arxiv.org/abs/1803.01871 , 32kb) ------------------------------------------------------------------------------ \\ arXiv:1803.11533 (*cross-listing*) replaced with revised version Thu, 26 Apr 2018 15:04:51 GMT (360kb,D) Title: Critical Points at Infinity, Non-Gaussian Saddles, and Bions Authors: Alireza Behtash, Gerald V. Dunne, Thomas Schaefer, Tin Sulejmanpasic, Mithat Unsal Categories: hep-th hep-ph Comments: 31 pages, v2: fixed hyperlinks to references, minor edits Report-no: NSF-ITP-18-007 \\ ( https://arxiv.org/abs/1803.11533 , 360kb) ------------------------------------------------------------------------------ \\ arXiv:1804.02400 replaced with revised version Wed, 25 Apr 2018 20:59:53 GMT (96kb,D) Title: A universally enhanced light-quarks Yukawa couplings paradigm Authors: Shaouly Bar-Shalom, Amarjit Soni Categories: hep-ph hep-ex Comments: 11 pages, 2 figures, 2 tables \\ ( https://arxiv.org/abs/1804.02400 , 96kb) ------------------------------------------------------------------------------ \\ arXiv:1804.06017 replaced with revised version Thu, 26 Apr 2018 13:18:32 GMT (1654kb) Title: $\epsilon'_K/\epsilon_K$ and $K \to \pi \nu \bar\nu$ in a two-Higgs doublet model Authors: Chuan-Hung Chen, Takaaki Nomura Categories: hep-ph hep-ex Comments: 29 pages, 10 figures, typos corrected and texts revised Report-no: KIAS-P18039 \\ ( https://arxiv.org/abs/1804.06017 , 1654kb) ------------------------------------------------------------------------------ \\ arXiv:1804.06089 replaced with revised version Thu, 26 Apr 2018 02:00:01 GMT (2161kb,D) Title: $CP$ violating mode of the stoponium decay into $Zh$ Authors: Kingman Cheung, Wai-Yee Keung, Po-Yan Tseng Categories: hep-ph Comments: 16 pages, 4 figures \\ ( https://arxiv.org/abs/1804.06089 , 2161kb) ------------------------------------------------------------------------------ \\ arXiv:1804.08527 replaced with revised version Thu, 26 Apr 2018 15:34:59 GMT (158kb,D) Title: On the angular distribution of $\Lambda_b\to\Lambda(\to N\pi)\tau^+\tau^-$ decay Authors: Diganta Das Categories: hep-ph Comments: 24 pages, 4 captioned figures, 3 tables, citations added \\ ( https://arxiv.org/abs/1804.08527 , 158kb) ------------------------------------------------------------------------------ \\ arXiv:1804.09171 (*cross-listing*) replaced with revised version Thu, 26 Apr 2018 16:15:08 GMT (39kb) Title: Quantized K\"ahler Geometry and Quantum Gravity Authors: Jungjai Lee and Hyun Seok Yang Categories: hep-th gr-qc hep-ph Comments: 38 pages; Review for the 50th anniversary of Journal of the Korean Physical Society \\ ( https://arxiv.org/abs/1804.09171 , 39kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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/