Date: Wed, 25 Dec 19 01:16:39 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 Mon 23 Dec 19 19:00:00 GMT to Tue 24 Dec 19 19:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1912.11048 Date: Mon, 23 Dec 2019 19:00:00 GMT (3518kb,D) Title: Axion Dark Matter Detection by Superconducting Resonant Frequency Conversion Authors: Asher Berlin, Raffaele Tito D'Agnolo, Sebastian A. R. Ellis, Christopher Nantista, Jeffrey Neilson, Philip Schuster, Sami Tantawi, Natalia Toro, Kevin Zhou Categories: hep-ph hep-ex Comments: 30 pages, 7 figures \\ We propose an approach to search for axion dark matter with a specially designed superconducting radio frequency cavity, targeting axions with masses $m_a \lesssim 10^{-6} \text{ eV}$. Our approach exploits axion-induced transitions between nearly degenerate resonant modes of frequency $\sim$ GHz. A scan over axion mass is achieved by varying the frequency splitting between the two modes. Compared to traditional approaches, this allows for parametrically enhanced signal power for axions lighter than a GHz. The projected sensitivity covers unexplored parameter space for QCD axion dark matter for $10^{-8} \text{ eV} \lesssim m_a \lesssim10^{-6} \text{ eV}$ and axion-like particle dark matter as light as $m_a \sim 10^{-14} \text{ eV}$. \\ ( https://arxiv.org/abs/1912.11048 , 3518kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11050 Date: Mon, 23 Dec 2019 19:00:00 GMT (2324kb,D) Title: Three Point Energy Correlators in the Collinear Limit: Symmetries, Dualities and Analytic Results Authors: Hao Chen, Ming-Xing Luo, Ian Moult, Tong-Zhi Yang, Xiaoyuan Zhang, and Hua Xing Zhu Categories: hep-ph hep-th nucl-th Comments: 52 pages, 12 figures \\ Energy Correlators measure the energy deposited in multiple detectors as a function of the angles between the detectors. In this paper, we analytically compute the three particle correlator in the collinear limit in QCD for quark and gluon jets, and also in $\mathcal{N}=4$ super Yang-Mills theory. We find an intriguing duality between the integrals for the energy correlators and infrared finite Feynman parameter integrals, which maps the angles of the correlators to dual momentum variables. In $\mathcal{N}=4$, we use this duality to express our result as a rational sum of simple Feynman integrals (triangles and boxes). In QCD our result is expressed as a sum of the same transcendental functions, but with more complicated rational functions of cross ratio variables as coefficients. Our results represent the first analytic calculation of a three-prong jet substructure observable of phenomenological relevance for the LHC, revealing unexplored simplicity in the energy flow of QCD jets. They also provide valuable data for improving the understanding of the light-ray operator product expansion. \\ ( https://arxiv.org/abs/1912.11050 , 2324kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11053 Date: Mon, 23 Dec 2019 19:00:03 GMT (996kb,D) Title: Radion-Activated Higgs Mechanism Authors: Cem Er\"oncel, Jay Hubisz, Gabriele Rigo Categories: hep-ph hep-th Comments: 35 pages, 9 figures Report-no: DESY 19-236 \\ We study multi-scalar models of radius stabilization, with an eye towards application to novel extra-dimensional models of symmetry breaking. With inspiration from holography, we construct a multi-scalar effective potential that is a function of UV-brane values of the scalar fields, and that takes into account bulk gravitational backreaction. We study extrema of this potential, and additionally provide a "superpotential" method for generating static solutions for the extra-dimensional geometry. We apply these methods to some simple models of the Higgs mechanism where the Higgs itself plays a non-trivial role in radius stabilization. We note that tuning of the Higgs mass relative to the Kaluza-Klein scale is related to various types of tuning of 5D parameters, with different resulting spectra and phenomenologies. \\ ( https://arxiv.org/abs/1912.11053 , 996kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11055 Date: Mon, 23 Dec 2019 19:00:04 GMT (772kb,D) Title: (Machine) Learning amplitudes for faster event generation Authors: Fady Bishara and Marc Montull Categories: hep-ph Comments: 6+2 pages, 6 figures, and 2 tables Report-no: DESY 19-232 \\ We propose to replace the exact amplitudes used in MC event generators for trained Machine Learning regressors, with the aim of speeding up the evaluation of {\it slow} amplitudes. As a proof of concept, we study the process $gg \to ZZ$ whose LO amplitude is loop induced. We show that gradient boosting machines like $\texttt{XGBoost}$ can predict the fully differential distributions with errors below $0.1 \%$, and with prediction times $\mathcal{O}(10^3)$ faster than the evaluation of the exact function. This is achieved with training times $\sim 7$ minutes and regressors of size $\lesssim 30$~Mb. These results suggest a possible a new avenue to speed up MC event generators. \\ ( https://arxiv.org/abs/1912.11055 , 772kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11056 Date: Mon, 23 Dec 2019 19:00:07 GMT (489kb,D) Title: Microwave cavity searches for low-frequency axion dark matter Authors: Robert Lasenby Categories: hep-ph hep-ex Comments: 19 pages, 6 figures \\ For low-mass (frequency $\ll$ GHz) axions, dark matter detection experiments searching for an axion-photon-photon coupling generally have suppressed sensitivity, if they use a static background magnetic field. This geometric suppression can be alleviated by using a high-frequency oscillating background field. Here, we present a high-level sketch of such an experiment, using superconducting cavities at $\sim$ GHz frequencies. We discuss the physical limits on signal power arising from cavity properties, and point out cavity geometries that could circumvent some of these limitations. We also consider how backgrounds, including vibrational noise and drive signal leakage, might impact sensitivity. While practical microwave field strengths are significantly below attainable static magnetic fields, the lack of geometric suppression, and higher quality factors, may allow superconducting cavity experiments to be competitive in some regimes. \\ ( https://arxiv.org/abs/1912.11056 , 489kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11061 Date: Mon, 23 Dec 2019 19:01:20 GMT (4799kb,D) Title: Non-minimal composite dark matter Authors: Maria Ramos Categories: hep-ph Comments: 32 pages, 35 figures \\ Scalar singlet dark matter in anomaly-free composite Higgs models is accompanied by exotic particles to which the dark matter annihilates. The latter can therefore freeze out even in the absence of couplings to the Standard Model. In this regime, both current and future direct detection constraints can be avoided. Moreover, due to the different decay modes of the extra particles, the dark matter candidate can even escape indirect detection constraints. Assessing this issue requires dedicated simulations of the gamma ray spectrum, that we provide in the present article in the context of $SO(7)/SO(6)$. For the parameter space region that evades constraints from dark matter experiments, we develop new analyses to be performed at a future 100 TeV collider based on the search of the new particles produced in the decay of heavy vector-like quarks. \\ ( https://arxiv.org/abs/1912.11061 , 4799kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11199 Date: Tue, 24 Dec 2019 04:24:15 GMT (24kb) Title: Exact Relations for Twist-3 Gluon Distribution and Fragmentation Functions from Operator Identities Authors: Yuji Koike, Kenta Yabe, Shinsuke Yoshida Categories: hep-ph Comments: 27 pages \\ We perform a systematic study on the twist-3 gluon distribution and fragmentation functions which appear in the collinear twist-3 factorization for hard inclusive processes. Three types of twist-3 distribution and fragmentation functions, i.e., intrinsic, kinematical and dynamical ones, which are necessary to describe all kinds of twist-3 cross sections, are related to each other by the operator identities based on the QCD equation of motion and the Lorentz invariance properties of the correlation functions. We derive the exact relations for all twist-3 gluonic distribution and fragmentation functions for a spin-1/2 hadron. Those relations allow one to express intrinsic and kinematical twist-3 gluon functions in terms of the twist-2 and dynamical twist-3 functions, which provides a basis for the renormalization of intrinsic and kinematical twist-3 functions. In addition, those model independent relations are crucial to guarantee gauge invariance and frame independence properties of the twist-3 cross sections. \\ ( https://arxiv.org/abs/1912.11199 , 24kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11256 Date: Tue, 24 Dec 2019 09:16:24 GMT (60kb) Title: Reanalysis of the most strange dibaryon within constituent quark models Authors: Hongxia Huang, Xinmei Zhu, Jialun Ping Categories: hep-ph nucl-th Comments: 8 pages, 3 figures. arXiv admin note: text overlap with arXiv:1507.07124 \\ The most strange dibaryon $\Omega\Omega$ with quantum numbers $S=-6$, $I=0$, and $J^{P}=0^{+},~1^{-},~2^{+},~3^{-}$ is reanalyzed in the framework of quark delocalization color screening model (QDCSM) and chiral quark model (ChQM). The $\Omega\Omega$ dibaryon with $J^{P}=0^{+}$ is bound, and the one with other quantum numbers $J^{P}=1^{-},~2^{+},~3^{-}$ are all unbound in our calculation. The low-energy scattering phase shifts, the scattering length, and the effective range of the $\Omega\Omega$ dibaryon with $J^{P}=0^{+}$ also support the existence of such strange dibaryon. This dibaryon is showed to be a shallow bound state in QDCSM, while the binding energy becomes much larger in the ChQM by including the effect of the hidden-color channel coupling. And the scalar nonet meson-exchange in the ChQM also provides more attraction for the $\Omega\Omega$ system. Experimental search for such most strange dibaryon will provide much information for understanding the hadron-hadron interactions in different quark models. \\ ( https://arxiv.org/abs/1912.11256 , 60kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11288 Date: Tue, 24 Dec 2019 11:06:39 GMT (9kb) Title: Diffractive Dissociation of Alpha Particles as a Test of Isophobic Short-Range Correlations inside Nuclei Authors: Jennifer Rittenhouse West, Stanley J. Brodsky, Guy F. de T\'eramond, Ivan Schmidt Categories: hep-ph nucl-ex nucl-th Comments: 4 pages, comments welcome \\ The CLAS collaboration at Jefferson Laboratory has compared nuclear parton distributions for a range of nuclear targets and found that the EMC effect measured in deep inelastic lepton-nucleus scattering has a strongly "isophobic" nature. This surprising observation suggests short-range correlations between neighboring $n$ and $p$ nucleons in nuclear wavefunctions that are much stronger compared to $p-p$ or $n-n$ correlations. In this paper we propose a definitive experimental test of the nucleon-nucleon explanation of the isophobic nature of the EMC effect: the diffractive dissociation on a nuclear target $A$ of high energy $\rm ^4He$ nuclei to pairs of nucleons $n$ and $p$ with high relative transverse momentum, $\alpha + A \to n + p + A' + X $. The comparison of $n-p$ events with $p-p$ and $n-n$ events directly tests the postulated breaking of isospin symmetry. The experiment also tests alternative QCD-level explanations for the isophobic EMC effect. In particular it will test a proposal for hidden-color degrees of freedom in nuclear wavefunctions based on isospin-zero $[ud]$ diquarks. \\ ( https://arxiv.org/abs/1912.11288 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11313 Date: Tue, 24 Dec 2019 12:18:41 GMT (141kb,D) Title: Unraveling the unintegrated gluon distribution in the proton via $\rho$-meson leptoproduction Authors: Francesco Giovanni Celiberto Categories: hep-ph Comments: 12 pages, 5 figures; version published in Nuovo Cim. C Journal-ref: Nuovo Cim. C42 (2019) no.5, 220 DOI: 10.1393/ncc/i2019-19220-9 \\ Sufficiently inclusive processes, like the deep inelastic scattering (DIS), are described in terms of scale-dependent parton distributions, which correspond to the density of partons with a given longitudinal momentum fraction, integrated over the parton transverse momentum. For less inclusive processes, one needs to consider densities unintegrated over the transverse momentum. This work focuses on the unintegrated gluon distribution (UGD), describing the probability that a gluon can be emitted by a colliding proton, with definite longitudinal fraction and transverse momentum. Through the leptoproduction of the $\rho$-meson at HERA, existent models for the UGD will be investigated and compared with experimental data. \\ ( https://arxiv.org/abs/1912.11313 , 141kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11326 Date: Tue, 24 Dec 2019 12:54:03 GMT (16kb,D) Title: Optimizing the Mellin-Barnes Approach to Numerical Multiloop Calculations Authors: Ievgen Dubovyk, Janusz Gluza and Tord Riemann Categories: hep-ph Comments: Presented by I. Dubovyk at the XLIII International Conference of Theoretical Physics "Matter to the Deepest", Chorz\'ow 2019 Report-no: KW 19-009 Journal-ref: Acta Physica Polonica B, Vol. 50 (2019), No 11, 1993 DOI: 10.5506/APhysPolB.50.1993 \\ The status of numerical evaluations of Mellin-Barnes integrals is discussed, in particular, the application of the quasi-Monte Carlo integration package QMC to the efficient calculation of multi-dimensional integrals. \\ ( https://arxiv.org/abs/1912.11326 , 16kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11332 Date: Tue, 24 Dec 2019 13:09:23 GMT (337kb,D) Title: Simple Theory of Chiral Fermion Dark Matter Authors: Tomohiro Abe, K. S. Babu Categories: hep-ph Comments: 26 pages, 7 figures Report-no: OSU-HEP-19-10 \\ We propose a theory of chiral fermion dark matter (DM) with an isospin-3/2 fermion of a dark sector $SU(2)_D$ gauge symmetry, which is arguably the simplest chiral theory. An isospin-3 scalar breaks $SU(2)_D$ down to a discrete non-Abelian group $T'$ and generates the DM mass. The $SU(2)_D$ gauge symmetry protects the DM mass and guarantees its stability. We derive consistency conditions for the theory and study its DM phenomenology. In some regions of parameters of the theory a two-component DM scenario is realized, consisting of a fermion and a boson, with the boson being the lightest $T'$ nonsinglet field. In the case of single component fermionic DM, we find that internal consistency of the theory, perturbativity arguments, and the observed relic abundance limit the DM mass to be less than $280$ GeV, except when $s$-channel resonance regions are open for annihilation. For a significant part of the parameter space, the theory can be tested in DM direct detection signals at the LZ and XENONnT experiments. \\ ( https://arxiv.org/abs/1912.11332 , 337kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11376 Date: Tue, 24 Dec 2019 14:21:06 GMT (460kb,D) Title: TAUOLA update for decay channels with $e^+e^-$ pairs in the final state Authors: S. Antropov (1), Sw. Banerjee (2), Z. W\c{a}s (1), J. Zaremba (1) ((1) Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland, (2) University of Louisville, Louisville, KY 40292, USA) Categories: hep-ph Report-no: IFJ-PAN-IV-2019-17 \\ With the arrival of high luminosity B-factories like the Belle II experiment, $\tau$ decay measurements have become more precise than ever, allowing rarer processes to be explored, and finer details of $\tau$ decays to be studied. These are important to understand the spectrum of intermediate particles produced in $\tau$ decays. Therefore Monte Carlo generators, like the TAUOLA program, have to facilitate precision analysis as well as confront new models that constantly emerge with the availability of high statistics experimental data. New decay channels and models may lead to large variation of matrix elements size within the available phase space, as in the case when $e^+e^-$ pairs are present in final state. It requires appropriate presampler of the phase space generator and a proper documentation to help users introduce their own models. While releasing a new update, it is important for the TAUOLA Monte Carlo library to maintain the general structure of the previous versions to preserve backward compatibility. The aim is to minimize changes from the user perspective. This paper presents a demonstration of new models implementation facilitated by the current update. \\ ( https://arxiv.org/abs/1912.11376 , 460kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11467 Date: Tue, 24 Dec 2019 18:45:19 GMT (106kb,D) Title: Parametrics of electromagnetic searches for axion dark matter Authors: Robert Lasenby Categories: hep-ph hep-ex Comments: 24 pages, 2 figures \\ Light axion-like particles occur in many theories of beyond-Standard-Model physics, and may make up some or all of the universe's dark matter. One of the ways they can couple to the Standard Model is through the electromagnetic $F_{\mu\nu} \tilde F^{\mu\nu}$ portal, and there is a broad experimental program, covering many decades in mass range, aiming to search for axion dark matter via this coupling. In this paper, we derive limits on the absorbed power, and coupling sensitivity, for a broad class of such searches. We find that standard techniques, such as resonant cavities and dielectric haloscopes, can achieve O(1)-optimal axion-mass-averaged signal powers, for given volume and magnetic field. For low-mass (frequency $\ll$ GHz) axions, experiments using static background magnetic fields generally have suppressed sensitivity - we discuss the physics of this limitation, and propose experimental methods to avoid it. We also comment on the detection of other forms of dark matter, including dark photons, as well as the detection of relativistic hidden sector particles. \\ ( https://arxiv.org/abs/1912.11467 , 106kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11472 Date: Tue, 24 Dec 2019 18:54:26 GMT (34kb) Title: Probe Dark Matter Axions using the Hyperfine Structure Splitting of Hydrogen Atoms Authors: Qiaoli Yang Categories: hep-ph hep-ex physics.atm-clus Comments: 4 pages, 1 figure \\ The cosmological axions can be a substantial part of dark matter if their PQ scale $f_a\sim10^{11}$eV and mass $m_a\sim10^{-5}$eV. Because the axions were created from the misalignment mechanisms, their energy spectral density is very large. The induced atomic transitions consequently are boosted if the atomic energy gap matches the axion mass. The hyperfine splitting between the spin 0 singlet ground state and the spin 1 triplet excited state has an energy gap $5.9*10^{-6}$eV which is close to the dark matter axion mass. With some additional adjustment by the zeeman effect, quantum transitions could be inducted between these states. Since the total spin of the triplet and the singlet differs one, the induced transition might be countable with a Stern-Gerlach apparatus. \\ ( https://arxiv.org/abs/1912.11472 , 34kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1912.11277 (*cross-listing*) Date: Tue, 24 Dec 2019 10:19:04 GMT (177kb,D) Title: Magneto-vortical effect in strongly coupled plasma Authors: Yanyan Bu and Shu Lin Categories: hep-th hep-ph nucl-th Comments: 37 pages, 6 figures \\ Based on a holographic model incorporating both chiral anomaly and gravitational anomaly, we study the effect of magneto-vortical coupling on transport properties of a strongly coupled plasma. The focus of present work is on the generation of a vector charge density and an axial current, as response to vorticity in a magnetized plasma. The transport coefficients parameterising the vector charge density and axial current are calculated both analytically (in the weak magnetic field limit) and also numerically (for general values of the magnetic field). We find the generation of vector charge receives both non-anomalous and anomalous contributions, with the non-anomalous contribution dominating in the limit of strong magnetic field and the anomalous contribution sensitive to both chiral anomaly and gravitational anomaly. On the contrary, we find the axial current is induced entirely due to the gravitational anomaly, thus we interpret the axial current generation as chiral vortical effect. The corresponding chiral vortical conductivity is found to be suppressed by the magnetic field. By Onsager relation, these transport coefficients are responsible for the generation of a thermal current due to a transverse electric field or a transverse axial magnetic field, which we call thermal Hall effect and thermal axial magnetic effect, respectively. \\ ( https://arxiv.org/abs/1912.11277 , 177kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11282 (*cross-listing*) Date: Tue, 24 Dec 2019 10:32:16 GMT (17kb) Title: SO(9) characterisation of the Standard Model gauge group Authors: Kirill Krasnov Categories: hep-th hep-ph Comments: 18 pages \\ A recent series of works by M. Dubois-Violette, I. Todorov and S. Drenska characterised the SM gauge group as the subgroup of SO(9) that, in the octonionic model of the later, preserves the split of the space of octonions into a copy of the complex plane plus the rest. This description, however, proceeded via the exceptional Jordan algebra J_3^8 and its group of automorphisms F_4, and remained rather indirect. The goal of this paper is to provide as explicit description as possible and also clarify the underlying geometry. It is well-known that the groups SO(3), SO(5) and SO(9) have a complex, quaternionic and octonionic models respectively. The first of these is the familiar realisation of the (double cover of) the rotation group in three dimensions in terms of 2x2 special unitary matrices. Replacing complex numbers with quaternions and octonions one gets SO(5) and SO(9) respectively. Choosing a unit imaginary quaternion or octonion then equips quaternions or octonions with an almost complex structure, and thus introduces the splits H=C+C or O=C+C^3, where the first copy of C is the one containing the imaginary unit that generates the almost complex structure. The subgroup of transformations in SO(5) that preserves H=C+C is SU(2)xU(1)/Z_2. The subgroup of transformations in SO(9) that preserves the split C=C+C^3 is the Standard Model gauge group SU(3)xSU(2)xU(1)/Z_6. We explain all these statements, as well as work out their analogs for the split quaternions and octonions. \\ ( https://arxiv.org/abs/1912.11282 , 17kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11400 (*cross-listing*) Date: Fri, 20 Dec 2019 21:42:39 GMT (8459kb,D) Title: N$^*$ Experiments and what they tell us about Strong QCD Physics Authors: Volker D. Burkert Categories: nucl-ex hep-lat hep-ph nucl-th Comments: 12 Pages, 18 figures. Invited talk given at the N*2019 conference at Bonn, Germany. arXiv admin note: text overlap with arXiv:1603.00919, arXiv:1801.10480 \\ I give an overview on experimental studies of the spectrum and the structure of the excited states of the nucleon and what we can learn about their internal structure. One focus is on the efforts to obtain a more complete picture of the light-quark baryon excitation spectrum employing electromagnetic beams that will allow us to draw some conclusions on the symmetries underlying the spectrum. For the higher mass excitations, the full employment of coupled channel approaches is essential when searching for new excited states in the large amounts of data already accumulated in different channels involving a variety of polarization observables. The other focus is on the study of transition form factors and helicity amplitudes and their dependences on $Q^2$, especially on some of the more prominent resonances, especially $\Delta(1232)\frac{3}{2}^+$, $N(1440)\frac{1}{2}^+$, and negative parity states $N(1535)\frac{1}{2}^-$, and $N(1675)\frac{5}{2}^-$. These were obtained in pion and eta electroproduction experiments off proton targets and have already led to further insights in the active degrees-of-freedom as a function of the distance scale involved. \\ ( https://arxiv.org/abs/1912.11400 , 8459kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11422 (*cross-listing*) Date: Tue, 24 Dec 2019 15:59:06 GMT (370kb) Title: Hidden Analytic Structure of Higgs Amplitudes and Maximal Transcendentality Principle Authors: Qingjun Jin and Gang Yang Categories: hep-th hep-ph Comments: 11 pages, 2 figures; Proceedings of the 14th International Symposium on Radiative Corrections (RADCOR2019) 9-13 September 2019, Avignon, France Journal-ref: PoS(RADCOR2019)071 \\ We present the computation of two-loop Higgs plus three-parton amplitudes with dimension-seven operators in Higgs effective field theory. The computation is based on the combination of unitarity cut and integration by parts methods in an unconventional way. The analytic results take remarkably simple form. In particular, the results show that the QCD and N=4 SYM results share the same leading transcendental parts. This generalizes the so-call maximal transcendentality principle to the Higgs amplitudes with high dimension operators and also with fundamental external quark states. Further simplicity also exists in lower transcendental parts, suggesting hidden structures beyond maximal transcendentality. \\ ( https://arxiv.org/abs/1912.11422 , 370kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11451 (*cross-listing*) Date: Tue, 24 Dec 2019 17:54:41 GMT (21kb) Title: Quartet-metric gravity, scalar-graviton dark substance and vacuum energy screening: extending GR vs. its WTDiff alternative Authors: Yury F. Pirogov Categories: gr-qc hep-ph Comments: 18 pages \\ In the frameworks of the effective field theory of metric supplemented by some distinct dynamical coordinates parametrized, in turn, by a scalar quartet -- the so-called quartet-metric gravity -- the extension of tensor gravity through a massive scalar graviton in addition to the massless tensor one is consistently exposed. The field equations for the two realizations of such an extension originating from the classically equivalent prototype theories - General Relativity (GR) and its Weyl transverse (WTDiff) alternative - are derived and argued to be, generally, non-equivalent, with the pure-gravity case manifesting this explicitly in detail. A splitting of the cosmological constant onto the gravitating and non-gravitating parts, with a partial screening of the vacuum energy through an emergent scalar-graviton dark substance, is considered. A prior importance of treating the WTDiff gravity as a prototype one on par with GR, when looking for a putative next-to-GR extended theory of gravity with a scalar-graviton dark substance, is stressed. \\ ( https://arxiv.org/abs/1912.11451 , 21kb) ------------------------------------------------------------------------------ \\ arXiv:1912.11453 (*cross-listing*) Date: Tue, 24 Dec 2019 18:04:28 GMT (1121kb,D) Title: Dark matter with excitable levels Authors: Andrew J. Wren Categories: astro-ph.CO hep-ph Comments: 25 pages, 11 figures, 2 tables. Mathematica and Python code available at https://github.com/andrewwren/dmwel \\ This paper explores the possibility that dark matter particles are objects with a set of excitable levels, as for a string or drum. A change in excitation is associated with the absorption or emission of a photon, and the probability of such a change is dependent on the ambient photon energy density. Particle mass comes entirely from excitations. Such dark matter with excitable levels, or DMWEL, particles have a distribution of masses which freezes out to its present-day form during the early universe. In the particular model considered, consistency with Plank CMB anisotropy observations implies a cautious lower bound on the energy of the first excitable level of 2 to 200 eV for a set of reference parameters. While laboratory detection looks to require a considerable increase in the power of controlled light-sources, it might be possible in the near future to detect or constrain DMWEL further through improved anisotropy observations, closer determination of the CMB's maximum deviation from a blackbody shape, or from gravitational probes of the dark matter power spectrum. For certain parameters near to the boundary of the region allowed by CMB anisotropies, DMWEL dark matter is cold, but with a cut-off halo mass many orders of magnitude greater than that typical for WIMP cold dark matter. \\ ( https://arxiv.org/abs/1912.11453 , 1121kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1603.08211 replaced with revised version Tue, 24 Dec 2019 08:39:59 GMT (8kb) Title: On the origin of the discrepancy between the expected and observed results at KamLAND Authors: L.M. Slad Categories: hep-ph hep-ex physics.ins-det Comments: 6 pages. Significant additions, editorial changes \\ ( https://arxiv.org/abs/1603.08211 , 8kb) ------------------------------------------------------------------------------ \\ arXiv:1808.05516 (*cross-listing*) replaced with revised version Tue, 24 Dec 2019 08:49:45 GMT (10kb) Title: Deuteron disintegration by reactor antineutrinos Authors: L.M. Slad Categories: nucl-th hep-ph Comments: 8 pages. Significant additions, editorial changes \\ ( https://arxiv.org/abs/1808.05516 , 10kb) ------------------------------------------------------------------------------ \\ arXiv:1905.02892 replaced with revised version Sat, 21 Dec 2019 13:27:35 GMT (268kb) Title: Analysis of the $P_c(4312)$, $P_c(4440)$, $P_c(4457)$ and related hidden-charm pentaquark states with QCD sum rules Authors: Zhi-Gang Wang Categories: hep-ph Comments: 20 pages, 14 figures. arXiv admin note: text overlap with arXiv:1806.10384 \\ ( https://arxiv.org/abs/1905.02892 , 268kb) ------------------------------------------------------------------------------ \\ arXiv:1907.06405 replaced with revised version Mon, 23 Dec 2019 19:06:50 GMT (2143kb,D) Title: Improved model-dependent corollary analyses after the first six annual cycles of DAMA/LIBRA-phase2 Authors: R. Bernabei (1), P. Belli (1), F. Cappella (2), V. Caracciolo (3), R. Cerulli (1), C.J. Dai (4), A. d'Angelo (2), A. Di Marco (1), H.L. He (4), A. Incicchitti (2), X.H. Ma (4), V. Merlo (1), F. Montecchia (1,5), X.D. Sheng (4), Z.P. Ye (4,6) ((1) Univ. Roma Tor Vergata and INFN Roma Tor Vergata, (2) Univ. Roma and INFN Roma, (3) INFN LNGS, (4) IHEP Beijing, (5) Univ. Tor Vergata, (6) Univ. Jinggangshan) Categories: hep-ph astro-ph.CO hep-ex physics.ins-det Comments: 48 pages, 33 figures; in press on Nucl. Phys. At. Energy (2019) \\ ( https://arxiv.org/abs/1907.06405 , 2143kb) ------------------------------------------------------------------------------ \\ arXiv:1907.11938 replaced with revised version Tue, 24 Dec 2019 14:38:38 GMT (1046kb,D) Title: Phenomenological consistency of the singlet-triplet scotogenic model Authors: Diego Restrepo, Andr\'es Rivera Categories: hep-ph Comments: v3: Typos, referee suggestions \\ ( https://arxiv.org/abs/1907.11938 , 1046kb) ------------------------------------------------------------------------------ \\ arXiv:1907.13134 (*cross-listing*) replaced with revised version Tue, 24 Dec 2019 13:07:41 GMT (5720kb,D) Title: Coupling Constant Corrections in a Holographic Model of Heavy Ion Collisions with Nonzero Baryon Number Density Authors: \r{A}smund Folkestad, Sa\v{s}o Grozdanov, Krishna Rajagopal, Wilke van der Schee Categories: hep-th hep-ph nucl-ex nucl-th Comments: v2: 40 pages, 12 figures. Minor adjustments. Version appearing in JHEP Report-no: MIT-CTP/5136 Journal-ref: JHEP 1912 (2019) 093 DOI: 10.1007/JHEP12(2019)093 \\ ( https://arxiv.org/abs/1907.13134 , 5720kb) ------------------------------------------------------------------------------ \\ arXiv:1908.04252 replaced with revised version Sat, 21 Dec 2019 14:00:40 GMT (13kb,D) Title: Relaxation of Higgs mass and cosmological constant with four-form fluxes and reheating Authors: Hyun Min Lee Categories: hep-ph hep-th Comments: 14 pages, no figures, v2: discussion on reheating revised, conclusions unchanged, references added, v3: extended and improved discussion on reheating before and after last membrane nucleation, To be published in JHEP. arXiv admin note: substantial text overlap with arXiv:1910.09171 \\ ( https://arxiv.org/abs/1908.04252 , 13kb) ------------------------------------------------------------------------------ \\ arXiv:1908.07914 replaced with revised version Tue, 24 Dec 2019 02:34:53 GMT (76kb) Title: Analysis of the hidden-charm tetraquark mass spectrum with the QCD sum rules Authors: Zhi-Gang Wang Categories: hep-ph Comments: 19 pages, 4 figures. arXiv admin note: text overlap with arXiv:1903.10895 \\ ( https://arxiv.org/abs/1908.07914 , 76kb) ------------------------------------------------------------------------------ \\ arXiv:1909.10717 (*cross-listing*) replaced with revised version Tue, 24 Dec 2019 12:19:40 GMT (115kb) Title: Dynamics of Revolving D-Branes at Short Distances Authors: Satoshi Iso, Noriaki Kitazawa, Hikaru Ohta, Takao Suyama Categories: hep-th hep-ph Comments: 32 pages, 4 figures, v2: version to appear in JHEP Report-no: KEK-TH-2152 \\ ( https://arxiv.org/abs/1909.10717 , 115kb) ------------------------------------------------------------------------------ \\ arXiv:1910.02666 replaced with revised version Tue, 24 Dec 2019 12:01:38 GMT (1396kb) Title: The Normal Neutrino Mass Ordering is Exactly What We Need! Authors: Shao-Feng Ge and Jing-Yu Zhu Categories: hep-ph hep-ex Comments: 7 pages, 5 figures, extended discussions and more references \\ ( https://arxiv.org/abs/1910.02666 , 1396kb) ------------------------------------------------------------------------------ \\ arXiv:1910.09838 (*cross-listing*) replaced with revised version Tue, 24 Dec 2019 18:17:45 GMT (305kb,D) Title: Ultraperipheral vs ordinary nuclear interactions Authors: I.M. Dremin Categories: nucl-th hep-ex hep-ph nucl-ex Comments: 12 pages, 1 Fig, references and text added \\ ( https://arxiv.org/abs/1910.09838 , 305kb) ------------------------------------------------------------------------------ \\ arXiv:1910.10249 replaced with revised version Mon, 23 Dec 2019 22:52:35 GMT (133kb,D) Title: Heavy sterile neutrino emission in core-collapse supernovae: Constraints and signatures Authors: Leonardo Mastrototaro, Alessandro Mirizzi, Pasquale Dario Serpico, Arman Esmaili Categories: hep-ph astro-ph.HE Comments: 24 pages, 12 figures; v2: discussions expanded, matches the published version in JCAP \\ ( https://arxiv.org/abs/1910.10249 , 133kb) ------------------------------------------------------------------------------ \\ arXiv:1912.07185 replaced with revised version Tue, 24 Dec 2019 09:29:23 GMT (716kb,D) Title: Leptogenesis in fast expanding Universe Authors: Shao-Long Chen, Amit Dutta Banik, and Ze-Kun Liu (CCNU, Wuhan, Inst. Part. Phys.) Categories: hep-ph Comments: 17 pages, 7 figures, references added \\ ( https://arxiv.org/abs/1912.07185 , 716kb) ------------------------------------------------------------------------------ \\ arXiv:1912.07550 replaced with revised version Mon, 23 Dec 2019 22:47:51 GMT (4423kb,D) Title: Transverse-momentum-dependent parton distributions up to N$^3$LL from Drell-Yan data Authors: Alessandro Bacchetta, Valerio Bertone, Chiara Bissolotti, Giuseppe Bozzi, Filippo Delcarro, Fulvio Piacenza, Marco Radici Categories: hep-ph Comments: 43 pages, 9 figures; small corrections to text and a few references added Report-no: JLAB-THY-19-3121 \\ ( https://arxiv.org/abs/1912.07550 , 4423kb) ------------------------------------------------------------------------------ \\ arXiv:1912.08553 replaced with revised version Mon, 23 Dec 2019 20:10:59 GMT (73kb,D) Title: Gluon Bremsstrahlung in Relativistic Heavy Ion Collisions Authors: Mawande Lushozi, Larry D. McLerran, Micha{\l} Praszalowicz and Gongming Yu Categories: hep-ph Comments: 5 pages, 2 figures \\ ( https://arxiv.org/abs/1912.08553 , 73kb) ------------------------------------------------------------------------------ \\ arXiv:1912.08606 replaced with revised version Mon, 23 Dec 2019 20:31:47 GMT (9kb) Title: Reduction of Feynman Integrals in the Parametric Representation II: Reduction of Tensor Integrals Authors: Wen Chen Categories: hep-ph Comments: typos corrected, an incorrect equation (eq. 6b) deleted \\ ( https://arxiv.org/abs/1912.08606 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1912.08911 replaced with revised version Mon, 23 Dec 2019 20:34:50 GMT (463kb,D) Title: The Frame-Independent Spatial Coordinate $\tilde{z}$: Implications for Light-Front Wave Functions, Deep Inelastic Scattering, Light-Front Holography, and Lattice QCD Calculations Authors: Gerald A. Miller and Stanley J. Brodsky Categories: hep-ph hep-lat nucl-th Comments: 6 pages, 6 figures, this version adds references Report-no: NT@UW-19-20 \\ ( https://arxiv.org/abs/1912.08911 , 463kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- 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/