Date: Thu, 30 May 19 00:30:34 GMT Subject: hep-ph daily 11 new + 8 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 28 May 19 18:00:00 GMT to Wed 29 May 19 18:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1905.11994 Date: Tue, 28 May 2019 18:00:00 GMT (465kb,D) Title: Electroweak Baryogenesis from Temperature-Varying Couplings Authors: Sebastian A. R. Ellis, Seyda Ipek and Graham White Categories: hep-ph Comments: 34 pages 10 figures \\ The fundamental couplings of the Standard Model are known to vary as a function of energy scale through the Renormalisation Group (RG), and have been measured at the electroweak scale at colliders. However, the variation of the couplings as a function of temperature need not be the same, raising the possibility that couplings in the early universe were not at the values predicted by RG evolution. We study how such temperature-variance of fundamental couplings can aid the production of a baryon asymmetry in the universe through electroweak baryogenesis. We do so in the context of the Standard Model augmented by higher-dimensional operators up to dimension 6. \\ ( https://arxiv.org/abs/1905.11994 , 465kb) ------------------------------------------------------------------------------ \\ arXiv:1905.11997 Date: Tue, 28 May 2019 18:00:01 GMT (2226kb,D) Title: CP Symmetries as Guiding Posts: Realistic Variants of Tri-Bi-Maximal Mixing-II Authors: Peng Chen, Salvador Centelles Chuli\'a, Gui-Jun Ding, Rahul Srivastava, Jos\'e W. F. Valle Categories: hep-ph hep-ex Comments: 19 pages, 8 figures Report-no: USTC-ICTS-19-09, IFIC/19-XXX \\ In this follow up of arXiv:1812.04663 we analyze the generalized CP symmetries of the charged lepton mass matrix compatible with the complex version of the Tri-Bi-Maximal (TBM) lepton mixing pattern. These symmetries are used to ``revamp'' the simplest TBM \textit{Ansatz} in a systematic way. Our generalized patterns share some of the attractive features of the original TBM matrix and are consistent with current oscillation experiments. We also discuss their phenomenological implications both for upcoming neutrino oscillation and neutrinoless double beta decay experiments. \\ ( https://arxiv.org/abs/1905.11997 , 2226kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12007 Date: Tue, 28 May 2019 18:14:39 GMT (1727kb,D) Title: On the Equivalence of Three-Particle Scattering Formalisms Authors: A. W. Jackura, S. M. Dawid, C. Fern\'andez-Ram\'irez, V. Mathieu, M. Mikhasenko, A. Pilloni, S. R. Sharpe, and A. P. Szczepaniak Categories: hep-ph hep-lat nucl-th Comments: 13 pages, 5 figures Report-no: JLAB-THY-19-2947 \\ In recent years, different on-shell $\mathbf{3}\to\mathbf{3}$ scattering formalisms have been proposed to be applied to both lattice QCD and infinite volume scattering processes. We prove that the formulation in the infinite volume presented by Hansen and Sharpe in Phys.~Rev.~D92, 114509 (2015) and subsequently Brice\~no, Hansen, and Sharpe in Phys.~Rev.~D95, 074510 (2017) can be recovered from the $B$-matrix representation, derived on the basis of $S$-matrix unitarity, presented by Mai {\em et al.} in Eur.~Phys.~J.~A53, 177 (2017) and Jackura {\em et al.} in Eur.~Phys.~J.~C79, 56 (2019). Therefore, both formalisms in the infinite volume are equivalent and the physical content is identical. Additionally, the Faddeev equations are recovered in the non-relativistic limit of both representations. \\ ( https://arxiv.org/abs/1905.12007 , 1727kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12017 Date: Tue, 28 May 2019 18:23:00 GMT (177kb,D) Title: New physics via pion capture and simple nuclear reactions Authors: Chien-Yi Chen, David McKeen, Maxim Pospelov Categories: hep-ph hep-ex nucl-ex nucl-th Comments: 9 pages, 5 figures \\ Light, beyond-the-standard-model particles $X$ in the 1-100 MeV mass range can be produced in nuclear and hadronic reactions but would have to decay electromagnetically. We show that simple and well-understood low-energy hadronic processes can be used as a tool to study $X$ production and decay. In particular, the pion capture process $\pi^- p \to X n \to e^+ e^- n$ can be used in a new experimental setup to search for anomalies in the angular distribution of the electron-positron pair, which could signal the appearance of dark photons, axion-like particles and other exotic states. This process can be used to decisively test the hypothesis of a new particle produced in the $^7{\rm Li}+p$ reaction. We also discuss a variety of other theoretically clean hadronic processes, such as $p+{\rm D(T)}$ fusion, as a promising source of $X$ particles. \\ ( https://arxiv.org/abs/1905.12017 , 177kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12182 Date: Wed, 29 May 2019 02:39:09 GMT (521kb,D) Title: Sublunar-Mass Primordial Black Holes from Closed Axion Domain Walls Authors: Shuailiang Ge Categories: hep-ph astro-ph.CO \\ We study the formation of primordial black holes (PBHs) from the collapse of closed domain walls (DWs) which naturally arise in QCD axion models near QCD scale as part of the string-wall network. Size distribution of the closed DWs is determined by percolation theory, from which we further obtain PBH mass distribution and abundance. Various observational constraints on PBH abundance in turn also constrain axion parameters. Our model prefers axion mass in meV scale. The corresponding PBHs are in the sublunar-mass range $10^{20}$-$10^{22}$ g, one of the few mass windows available for PBHs contributing significantly to dark matter (DM). In our model, PBHs could be a significant portion of DM, sensitive to the formation efficiency of closed axion DWs. \\ ( https://arxiv.org/abs/1905.12182 , 521kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12336 Date: Wed, 29 May 2019 11:30:00 GMT (19kb) Title: Monopole and quadrupole contributions to the angular momentum density Authors: Peter Schweitzer, Kemal Tezgin Categories: hep-ph Comments: 6 pages, 1 figure \\ The energy-momentum tensor form factors contain a wealth of information about the nucleon. It is insightful to visualize this information in terms of 3D or 2D densities related by Fourier transformations to the form factors. The densities associated with the angular momentum distribution were recently shown to receive monopole and quadrupole contributions. We show that these two contributions are uniquely related to each other. The quadrupole contribution can be viewed as induced by the monopole contribution, and contains no independent information. Both contributions however play important roles for the visualization of the angular momentum density. \\ ( https://arxiv.org/abs/1905.12336 , 19kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12423 Date: Wed, 29 May 2019 13:27:08 GMT (47kb) Title: Dark matter and baryon-number generation in quintessential inflation via hierarchical right-handed neutrinos Authors: Soichiro Hashiba and Jun'ichi Yokoyama Categories: hep-ph astro-ph.CO hep-th Comments: 9 pages, 1 figure Report-no: RESCEU-7/19 \\ Incorporating three generations of right-handed Majorana neutrinos to quintessential inflation, we construct a model which simultaneously explains inflation, dark energy, dark matter and baryogenesis. These neutrinos have hierarchical masses $M_3 \sim 10^{13}$GeV, $M_2 \sim 10^{11}$GeV, $M_1 \sim 10$keV and are produced by gravitational particle production in the kination regime after inflation. The heaviest, the intermediate, and the lightest account for reheating, CP violation of leptogenesis, and dark matter, respectively. This model can be tested in various ways with forthcoming observations. \\ ( https://arxiv.org/abs/1905.12423 , 47kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12483 Date: Wed, 29 May 2019 14:17:37 GMT (331kb,D) Title: Cooling of dark-matter Admixed Neutron Stars with density-dependent Equation of State Authors: Sajad A. Bhat and Avik Paul Categories: hep-ph Comments: 22 Pages, 14 Figures and 2 Tables \\ We propose a dark-matter (DM) admixed density-dependent equation of state where the fermioinc DM interacts with the nucleons via Higgs portal. Presence of DM can hardly influence the particle distribution inside neutron star (NS) but can significantly affect the structure as well as equation of state (EOS) of NS. Introduction of DM inside NS softens the equation of state. We explored the effect of variation of DM mass and DM fermi momentum on the NS EOS. Moreover, DM-Higgs coupling is constrained using dark matter direct detection experiments. Then, we studied cooling of normal NSs using APR and DD2 EOSs and DM admixed NSs using dark-matter modified DD2 with varying DM mass and fermi momentum. We have done our analysis by considering different NS masses. Also DM mass and DM fermi momentum are varied for fixed NS mass and DM-Higgs coupling. We calculated the variations of luminosity and temperature of NS with time for all EOSs considered in our work and then compared our calculations with the observed astronomical cooling data of three pulsars namely PSR B0656+14, Geminga and PSR B1055-52. It is found that APR EOS agrees well with the pulsar data for lighter and medium mass NSs but cooling is very fast for heavier NS. For DM admixed DD2 EOS, we found that in case of medium and heavier mass NSs, all chosen DM masses and fermi momenta agree well with the observational data but for lower mass NSs, all DM fermi momenta and high DM masses barely agree with the observations. Furthermore, only lower DM mass agrees with observations in case of lighter NSs. Cooling becomes faster as compared to normal NSs in case of increasing DM mass and fermi momenta. It is infered from the calculations that if low mass super cold NSs are observed in future that may support the fact that heavier WIMP can be present inside neutron stars. \\ ( https://arxiv.org/abs/1905.12483 , 331kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12562 Date: Wed, 29 May 2019 16:14:42 GMT (1139kb,D) Title: Nonlinear Dynamics of Preheating after Multifield Inflation with Nonminimal Couplings Authors: Rachel Nguyen, Jorinde van de Vis, Evangelos I. Sfakianakis, John T. Giblin, Jr., and David I. Kaiser Categories: hep-ph astro-ph.CO Comments: 6 pages, 7 figures Report-no: Preprint MIT-CTP/5121, Nikhef 2019-016 \\ We study the post-inflation dynamics of multifield models involving nonminimal couplings using lattice simulations to capture significant nonlinear effects like backreaction and rescattering. By investigating the late-stage nonlinear dynamics, we measure the effective equation of state and typical time-scales for the onset of thermalization, quantities that could affect the usual mapping between predictions for primordial perturbation spectra and measurements of anisotropies in the cosmic microwave background radiation. For large values of the nonminimal coupling constants, we find efficient particle production that gives rise to nearly instantaneous preheating. Moreover, the strong single-field attractor behavior that was identified for these models in linearized analyses remains robust in the full theory, and in all cases considered the attractor persists until the end of preheating. The persistence of the single-field attractor is significant because it suppresses typical signatures of multifield models. We therefore find that even taking into account the violent preheating phase after inflation, predictions for primordial observables in this class of models retain a close match to the latest observations. \\ ( https://arxiv.org/abs/1905.12562 , 1139kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12583 Date: Wed, 29 May 2019 16:59:05 GMT (3914kb,D) Title: Two component dark matter with inert Higgs doublet: neutrino mass, high scale validity and collider searches Authors: Subhaditya Bhattacharya, Purusottam Ghosh, Abhijit Kumar Saha and Arunansu Sil Categories: hep-ph \\ The idea of this work is to investigate the constraints on the dark matter (DM) allowed parameter space from high scale validity (absolute stability of Higgs vacuum and perturbativity) in presence of multi particle dark sector and heavy right handed neutrinos to address correct neutrino mass. We illustrate a simple dark sector, consisting of one inert $SU(2)_L$ scalar doublet and a scalar singlet, both stabilised by additional $\mathcal{Z}_2 \times \mathcal{Z}^{'}_2$ symmetry, which aid to vacuum stability. We demonstrate DM-DM interaction helps achieving a large allowed paramete space for both the DM components by evading direct search bound. But, high scale validity puts further constraints on the model, for example, on the mass splitting between the charged and neutral component of inert doublet, which has important implication to its leptonic signature(s) at the Large Hadron Collider (LHC). \\ ( https://arxiv.org/abs/1905.12583 , 3914kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12585 Date: Wed, 29 May 2019 17:04:43 GMT (2813kb,D) Title: On the Inversion of High Energy Proton Authors: Mikael Mieskolainen Categories: hep-ph hep-ex Comments: 28 pages, 9 figures \\ Inversion of the K-fold stochastic autoconvolution integral equation is an elementary nonlinear problem, yet there are no de facto methods to solve it with finite statistics. To fix this problem, we introduce a novel inverse algorithm based on a combination of minimization of relative entropy, Fast Fourier Transform and a recursive version of Efron's bootstrap. This gives us power to obtain new perspectives on non-perturbative high energy QCD, such as probing the ab initio principles underlying the approximately negative binomial distributions of observed charged particle final state multiplicities, related to multiparton interactions, the fluctuating structure and profile of proton and diffraction. As a proof-of-concept, we apply the algorithm to ALICE proton-proton charged particle multiplicity measurements done at different center-of-mass energies and fiducial pseudorapidity intervals at the LHC, available on HEPData. A strong double peak structure emerges from the inversion, barely visible without it. \\ ( https://arxiv.org/abs/1905.12585 , 2813kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1905.11986 (*cross-listing*) Date: Tue, 28 May 2019 08:48:16 GMT (3224kb,D) Title: Effects of polarization and high-harmonics of two-color fields on dynamically assisted pair production Authors: Obulkasim Olugh, Zi-Liang Li and Bai-Song Xie Categories: quant-ph hep-ph Comments: 25 pages, 12 figures \\ Electron-positron pair production in dynamically assisted two-color electric fields is investigated for various polarizations using the real-time Dirac-Heisenberg-Wigner formalism. Momentum spectrum and number density of created pair for different polarizations are examined and obtained, in particular the effects of high-harmonics of two fields and the polarized degree on them are exhibited. It is found that for only single strong field, the interference effects vanish with high-degree elliptical polarization, however, for the dynamical assisted two-color fields, the interference effects of momentum spectrum are more remarkable with multiple peaks in elliptic or/and circular polarization. An important finding is the strong nonlinear dependence of the number density on the high-harmonics of two-color fields, which can be enhanced significantly over $7-8$ orders when appropriate high-harmonics is present. The polarization effect on number density is gradually weaken as the high-harmonics increases while a weak nonlinearity relation appears again if the high-harmonics exceeds a single-photon threshold. \\ ( https://arxiv.org/abs/1905.11986 , 3224kb) ------------------------------------------------------------------------------ \\ arXiv:1905.11992 (*cross-listing*) Date: Tue, 28 May 2019 18:00:00 GMT (346kb,D) Title: A Robust Method for Treating Astrophysical Mismodeling in Dark Matter Annihilation Searches of Dwarf Spheroidal Galaxies Authors: Tim Linden Categories: astro-ph.HE astro-ph.GA hep-ph Comments: 6 Pages, 4 Figures (Appendix adds 4 Pages, 2 Figures) \\ Fermi-LAT observations have strongly constrained dark matter annihilation through the joint-likelihood analysis of dwarf spheroidal galaxies (dSphs). These constraints are expected to be robust because dSphs have measurable dark matter content and produce negligible astrophysical emission. However, each dSph is dim, with a predicted flux that typically falls below the accuracy of the background model. We show that this significantly diminishes the reliability of previous joint-likelihood algorithms, and develop an improved analysis that directly accounts for the effect of background mismodeling. This method produces more robust limits and detections of dark matter in both real and mock data. We calculate improved limits on the dark matter annihilation cross-section, which differ by nearly a factor of two from previous analyses - despite examining identical data. \\ ( https://arxiv.org/abs/1905.11992 , 346kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12038 (*cross-listing*) Date: Tue, 28 May 2019 19:18:08 GMT (216kb,D) Title: Sensitivity of D meson azimuthal anisotropies to system size and nuclear structure Authors: Roland Katz, Caio A. G. Prado, Jacquelyn Noronha-Hostler, Jorge Noronha, Alexandre A. P. Suaide, Marcelo G. Munhoz Categories: nucl-th hep-ph nucl-ex Comments: 9 pages, 3 figures, proceedings for the 13th annual International Workshop on High pT Physics \\ Recent experimental data at the Large Hadron Collider (LHC) confirmed that the soft sector azimuthal anisotropies in central XeXe collisions are sensitive to deformations in the wave function of the Xenon nucleus. Additionally, the CMS experiment found that D meson flow is slightly suppressed compared to other particle species when considering quark number scaling in small systems of pPb compared to PbPb. In this talk we used the D and B Mesons Modular (DAB-MOD) code coupled to Trento+v-USPhydro to calculate the $R_{AA}$ and $v_n$'s of D mesons using different energy loss models and Langevin techniques. Comparing D mesons $R_{AA}$ and $v_n$ in PbPb to XeXe collisions it is found that in central collisions D meson azimuthal anisotropies are sensitive to details in the nuclear structure wave function of Xenon. Additionally, we find that in mid-central collisions the smaller system size of XeXe suppresses D meson flow. \\ ( https://arxiv.org/abs/1905.12038 , 216kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12421 (*cross-listing*) Date: Wed, 29 May 2019 13:26:48 GMT (20kb) Title: Hunting for extra dimensions in the shadow of M87* Authors: Sunny Vagnozzi, Luca Visinelli Categories: gr-qc astro-ph.CO hep-ph Comments: 5 pages, comments are very welcome \\ The Event Horizon Telescope has recently provided the first image of the dark shadow around the supermassive black hole M87*. The observation of a highly circular shadow provides strong limits on deviations of M87*'s quadrupole moment from the Kerr value. We show that the absence of such a deviation can be used to constrain the physics of extra dimensions of spacetime. Focusing on the Randall-Sundrum AdS$_5$ brane-world scenario, we show that the observation of M87*'s dark shadow sets the limit $\ell \lesssim 170\,{\rm AU}$, where $\ell$ is the AdS$_5$ curvature radius. This limit is among the first quantitative constraints on exotic physics obtained from the extraordinary first ever image of the dark shadow of a black hole. \\ ( https://arxiv.org/abs/1905.12421 , 20kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12485 (*cross-listing*) Date: Wed, 29 May 2019 14:23:17 GMT (1061kb,D) Title: Tensor non-Gaussianity search: Current status and future prospects Authors: Maresuke Shiraishi Categories: astro-ph.CO gr-qc hep-ph Comments: 17 pages, 2 figures, 1 table \\ Primordial gravitational waves are said to be a smoking gun of cosmic inflation, while, even if it is detected, the specification of their origins will still be required for establishing the true inflationary model. Testing non-Gaussianity in the tensor-mode anisotropies of the cosmic microwave background (CMB) is one of the most powerful ways to achieve it. In this paper, we review the studies on the tensor non-Gaussianity search employing the CMB bispectrum and forecast future developments. We then recognize that, no significant signal has so far been found from temperature and E-mode polarization data, while some orders-of-magnitude improvement in detection limit can be expected by adding the information of B-mode polarization, and there is already an established methodology for bispectrum estimation. This encourages a follow-up investigation with next-decadal CMB B-mode surveys. \\ ( https://arxiv.org/abs/1905.12485 , 1061kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12522 (*cross-listing*) Date: Wed, 29 May 2019 15:21:24 GMT (627kb) Title: Data-Driven Modeling of Electron Recoil Nucleation in PICO C$_3$F$_8$ Bubble Chambers Authors: C. Amole, M. Ardid, I. J. Arnquist, D. M. Asner, D. Baxter, E. Behnke, M. Bressler, B. Broerman, G. Cao, C. J. Chen, U. Chowdhury, K. Clark, J. I. Collar, P. S. Cooper, C. B. Coutu, C. Cowles, M. Crisler, G. Crowder, N. A. Cruz-Venegas, C. E. Dahl, M. Das, S. Fallows, J. Farine, R. Filgas, J. Fuentes, F. Girard, G. Giroux, B. Hackett, A. Hagen, J. Hall, C. Hardy, O. Harris, T. Hillier, E. W. Hoppe, C. M. Jackson, M. Jin, L. Klopfenstein, T. Kozynets, C. B. Krauss, M. Laurin, I. Lawson, A. Leblanc, I. Levine, C. Licciardi, W. H. Lippincott, B. Loer, F. Mamedov, P. Mitra, C. Moore, T. Nania, R. Neilson, A. J. Noble, P. Oedekerk, A. Ortega, M.-C. Piro, A. Plante, S. Priya, A. E. Robinson, S. Sahoo, O. Scallon, S. Seth, A. Sonnenschein, N. Starinski, I. \v{S}tekl, T. Sullivan, F. Tardif, E. V\'azquez-J\'auregui, J. M. Wagner, N. Walkowski, E. Weima, U. Wichoski, K. Wierman, W. Woodley, Y. Yan, V. Zacek, J. Zhang Categories: physics.ins-det astro-ph.CO hep-ex hep-ph Comments: 17 pages, 12 figures \\ The primary advantage of moderately superheated bubble chamber detectors is their simultaneous sensitivity to nuclear recoils from WIMP dark matter and insensitivity to electron recoil backgrounds. A comprehensive analysis of PICO gamma calibration data demonstrates for the first time that electron recoils in C$_3$F$_8$ scale in accordance with a new nucleation mechanism, rather than one driven by a hot-spike as previously supposed. Using this semi-empirical model, bubble chamber nucleation thresholds may be tuned to be sensitive to lower energy nuclear recoils while maintaining excellent electron recoil rejection. The PICO-40L detector will exploit this model to achieve thermodynamic thresholds as low as 2.8 keV while being dominated by single-scatter events from coherent elastic neutrino-nucleus scattering of solar neutrinos. In one year of operation, PICO-40L can improve existing leading limits from PICO on spin-dependent WIMP-proton coupling by nearly an order of magnitude for WIMP masses greater than 3 GeV c$^{-2}$ and will have the ability to surpass all existing non-xenon bounds on spin-independent WIMP-nucleon coupling for WIMP masses from 3 to 40 GeV c$^{-2}$. \\ ( https://arxiv.org/abs/1905.12522 , 627kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12544 (*cross-listing*) Date: Wed, 29 May 2019 15:46:54 GMT (5013kb,D) Title: Dynamics of Phase Separation from Holography Authors: Maximilian Attems, Yago Bea, Jorge Casalderrey-Solana, David Mateos, and Miguel Zilhao Categories: hep-th gr-qc hep-ph nucl-th Comments: 44 pages, 34 figures Report-no: ICCUB-19-004 \\ We use holography to develop a physical picture of the real-time evolution of the spinodal instability of a four-dimensional, strongly-coupled gauge theory with a first-order, thermal phase transition. We numerically solve Einstein's equations to follow the evolution, in which we identify four generic stages: A first, linear stage in which the instability grows exponentially; a second, non-linear stage in which peaks and/or phase domains are formed; a third stage in which these structures merge; and a fourth stage in which the system finally relaxes to a static, phase-separated configuration. On the gravity side the latter is described by a static, stable, inhomogeneous horizon. We conjecture and provide evidence that all static, non-phase separated configurations in large enough boxes are dynamically unstable. We show that all four stages are well described by the constitutive relations of second-order hydrodynamics that include all second-order gradients that are purely spatial in the local rest frame. In contrast, a M\"uller-Israel-Stewart-type formulation of hydrodynamics fails to provide a good description for two reasons. First, it misses some large, purely-spatial gradient corrections. Second, several second-order transport coefficients in this formulation, including the relaxation times $\tau_\pi$ and $\tau_\Pi$, diverge at the points where the speed of sound vanishes. \\ ( https://arxiv.org/abs/1905.12544 , 5013kb) ------------------------------------------------------------------------------ \\ arXiv:1905.12613 (*cross-listing*) Date: Wed, 29 May 2019 17:51:53 GMT (336kb,D) Title: Magnetic Field Induced Polarization Difference between Hyperons and Anti-hyperons Authors: Yu Guo, Shuzhe Shi, Shengqin Feng, Jinfeng Liao Categories: nucl-th hep-ph Comments: 6 pages, 4 figures \\ Recent STAR measurements suggest a difference in the global spin polarization between hyperons and anti-hyperons, especially at relatively low collision beam energy. One possible cause of this difference is the potential presence of in-medium magnetic field. In this study, we investigate the phenomenological viability of this interpretation. Using the AMPT model framework, we quantify the influence of different magnetic field evolution scenarios on the size of the polarization difference in a wide span of collision beam energies. We find that such difference is very sensitive to the lifetime of the magnetic field and also mildly dependent on the precise form of magnetic field time dependence. Assuming magnetic polarization as the mechanism to enhance anti-hyperon signal while suppress hyperon signal, we phenomenologically extract an upper limit on the needed magnetic field lifetime in order to account for the experimental data. The so-obtained lifetime values are in a quite plausible ballpark and follow approximately the scaling relation of being inversely proportional to the beam energy. Possible implications on other magnetic field related effects are also discussed. \\ ( https://arxiv.org/abs/1905.12613 , 336kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1710.06170 replaced with revised version Wed, 29 May 2019 10:59:40 GMT (619kb,D) Title: Left Right Symmetric Models with a Mixture of keV-TeV Dark Matter Authors: Debasish Borah and Arnab Dasgupta Categories: hep-ph astro-ph.CO Comments: Version 2: text rearranged, figures redrawn, 42 pages, 12 figures, matches journal version \\ ( https://arxiv.org/abs/1710.06170 , 619kb) ------------------------------------------------------------------------------ \\ arXiv:1809.01198 replaced with revised version Wed, 29 May 2019 09:54:42 GMT (2771kb,D) Title: Strong gravitational radiation from a simple dark matter model Authors: Iason Baldes, Camilo Garcia-Cely Categories: hep-ph astro-ph.CO Comments: 30 pages, 12 figures Report-no: DESY 18-155 Journal-ref: JHEP 1905 (2019) 190 DOI: 10.1007/JHEP05(2019)190 \\ ( https://arxiv.org/abs/1809.01198 , 2771kb) ------------------------------------------------------------------------------ \\ arXiv:1810.11462 (*cross-listing*) replaced with revised version Tue, 28 May 2019 19:05:36 GMT (9kb) Title: Remarks on the time-energy uncertainty relation Authors: K. Urbanowski Categories: quant-ph gr-qc hep-ph physics.pop-ph Comments: 10 pages, comments and references added \\ ( https://arxiv.org/abs/1810.11462 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1812.01511 replaced with revised version Wed, 29 May 2019 12:33:26 GMT (30kb) Title: Polynomiality sum rules for generalized parton distributions of spin-1 targets Authors: W. Cosyn, A. Freese, B. Pire Categories: hep-ph nucl-th Comments: 21 pages, minor revisions, published in PRD Report-no: CPHT-RR112.122018 Journal-ref: Phys. Rev. D 99, 094035 (2019) DOI: 10.1103/PhysRevD.99.094035 \\ ( https://arxiv.org/abs/1812.01511 , 30kb) ------------------------------------------------------------------------------ \\ arXiv:1812.03516 replaced with revised version Wed, 29 May 2019 16:42:40 GMT (427kb,D) Title: New mechanism of producing superheavy Dark Matter Authors: Eugeny Babichev, Dmitry Gorbunov, and Sabir Ramazanov Categories: hep-ph astro-ph.CO astro-ph.HE hep-th Comments: 19 pages; discussion of Dark Matter production mechanism is expanded, references added; matches journal version Report-no: INR-TH-2018-031, LPT-Orsay-19-20 DOI: 10.1016/j.physletb.2019.05.030 \\ ( https://arxiv.org/abs/1812.03516 , 427kb) ------------------------------------------------------------------------------ \\ arXiv:1901.04352 (*cross-listing*) replaced with revised version Wed, 29 May 2019 14:13:17 GMT (272kb,D) Title: How to relax the cosmological neutrino mass bound Authors: Isabel M. Oldengott, Gabriela Barenboim, Sarah Kahlen, Jordi Salvado, Dominik J. Schwarz Categories: astro-ph.CO hep-ph Comments: 17 pages, 6 figures; matches published version Report-no: IFIC/19-05 DOI: 10.1088/1475-7516/2019/04/049 \\ ( https://arxiv.org/abs/1901.04352 , 272kb) ------------------------------------------------------------------------------ \\ arXiv:1901.10389 replaced with revised version Tue, 28 May 2019 23:07:41 GMT (614kb) Title: Studying gaugino masses in supersymmetric model at future 100 TeV $pp$ collider Authors: Shoji Asai, So Chigusa, Toshiaki Kaji, Takeo Moroi, Masahiko Saito, Ryu Sawada, Junichi Tanaka, Koji Terashi, Kenta Uno Categories: hep-ph hep-ex Comments: 30 pages, 16 figures, 5 tables Journal-ref: JHEP 05 (2019) 179 DOI: 10.1007/JHEP05(2019)179 \\ ( https://arxiv.org/abs/1901.10389 , 614kb) ------------------------------------------------------------------------------ \\ arXiv:1902.07220 replaced with revised version Wed, 29 May 2019 08:04:03 GMT (841kb) Title: Equilibration of right-handed electrons Authors: Dietrich Bodeker, Dennis Schroder Categories: hep-ph astro-ph.CO Comments: 31 pages, 5 figures. v2: Added appendix estimating the conversion of right-handed electron number into hypermagnetic fields through the chiral anomaly. References added, minor errors corrected, results and conclusions unchanged, published version Journal-ref: JCAP05(2019)010 \\ ( https://arxiv.org/abs/1902.07220 , 841kb) ------------------------------------------------------------------------------ \\ arXiv:1903.02718 replaced with revised version Wed, 29 May 2019 02:33:28 GMT (2231kb,D) Title: Search for the $t\to ch$ decay at hadron colliders Authors: M. A. Arroyo-Ure\~na, R. Gait\'an-Lozano, E.A. Herrera-Chac\'on, J. H. Montes de Oca Y. and T. A. Valencia-P\'erez Categories: hep-ph Comments: References added \\ ( https://arxiv.org/abs/1903.02718 , 2231kb) ------------------------------------------------------------------------------ \\ arXiv:1903.05633 (*cross-listing*) replaced with revised version Wed, 29 May 2019 07:55:40 GMT (2073kb,D) Title: Fate of the $\eta'$ in the Quark Gluon Plasma Authors: Andrey Yu. Kotov, Maria Paola Lombardo, Anton M. Trunin Categories: hep-lat hep-ph Comments: 8 pages, 6 figures DOI: 10.1016/j.physletb.2019.05.035 \\ ( https://arxiv.org/abs/1903.05633 , 2073kb) ------------------------------------------------------------------------------ \\ arXiv:1903.08745 replaced with revised version Wed, 29 May 2019 13:07:24 GMT (1949kb,D) Title: Reconciling dark matter, $R_{K^{(*)}}$ anomalies and $(g-2)_{\mu}$ in an ${L_{\mu}-L_{\tau}}$ scenario Authors: Anirban Biswas, Avirup Shaw Categories: hep-ph Comments: 58 pages, 13 Figures, 3 Tables, Version published in JHEP Journal-ref: JHEP05(2019)165 DOI: 10.1007/JHEP05(2019)165 \\ ( https://arxiv.org/abs/1903.08745 , 1949kb) ------------------------------------------------------------------------------ \\ arXiv:1905.02753 (*cross-listing*) replaced with revised version Wed, 29 May 2019 02:42:13 GMT (42kb,D) Title: Yields of weakly-bound light nuclei as a probe of the statistical hadronization model Authors: Yiming Cai, Thomas D. Cohen, Boris A. Gelman, and Yukari Yamauchi Categories: nucl-th hep-ex hep-ph nucl-ex \\ ( https://arxiv.org/abs/1905.02753 , 42kb) ------------------------------------------------------------------------------ \\ arXiv:1905.10014 replaced with revised version Tue, 28 May 2019 20:25:35 GMT (6kb) Title: Axions and Atomic Clocks Authors: Lawrence M. Krauss (The Origins Project Foundation) Categories: hep-ph astro-ph.CO hep-ex quant-ph Comments: 3 pages, submitted to Phys. Rev. Lett. New reference added \\ ( https://arxiv.org/abs/1905.10014 , 6kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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/