Preview: Recent Articles in Phys. Rev. D
Recent Articles in Phys. Rev. D
Recent articles in Physical Review D
Published: 2016-12-02T13:45:09-05:00
Jet flavor classification in high-energy physics with deep neural networks
2016-12-02T10:00:00-05:00
Author(s): Daniel Guest, Julian Collado, Pierre Baldi, Shih-Chieh Hsu, Gregor Urban, and Daniel Whiteson
Classification of jets as originating from light-flavor or heavy-flavor quarks is an important task for inferring the nature of particles produced in high-energy collisions. The large and variable dimensionality of the data provided by the tracking detectors makes this task difficult. The current st…
[Phys. Rev. D 94, 112002] Published Fri Dec 02, 2016
Analysis of four-zero textures in the 3+1 neutrino framework
2016-12-02T10:00:00-05:00
Author(s): Debasish Borah, Monojit Ghosh, Shivani Gupta, Suprabh Prakash, and Sushant K. Raut
The presence of a zero texture in the neutrino mass matrix can indicate the presence of an underlying symmetry which can generate neutrino mass and mixing. In this paper, for the first time, we study the four-zero textures of the low energy neutrino mass matrix in the presence of an extra light-ster…
[Phys. Rev. D 94, 113001] Published Fri Dec 02, 2016
Impact of finite density on spectroscopic parameters of decuplet baryons
2016-12-02T10:00:00-05:00
Author(s): K. Azizi, N. Er, and H. Sundu
The decuplet baryons, Δ, Σ^{*}, Ξ^{*}, and Ω^{−}, are studied in nuclear matter by using the in-medium QCD sum rules. By fixing the three-momentum of the particles under consideration at the rest frame of the medium, the negative energy contributions are removed. It is obtained that the parameters o…
[Phys. Rev. D 94, 114002] Published Fri Dec 02, 2016
Analytical O(α_{s} ) corrections to the beam frame double-spin density matrix elements of e^{+} e^{−} →tt [over ¯]
2016-12-02T10:00:00-05:00
Author(s): L. Kaldamäe, S. Groote, and J. G. Körner
We provide analytical results for the O(α_{s}) corrections to the double-spin density matrix elements in the reaction e^{+}e^{−}→tt[over ¯]. These concern the elements ll, lt, ln, tt, tn, and nn of the double-spin density matrix elements where l, t, n stand for longitudinal, transverse and normal or…
[Phys. Rev. D 94, 114003] Published Fri Dec 02, 2016
First Monte Carlo analysis of fragmentation functions from single-inclusive e^{+} e^{−} annihilation
2016-12-02T10:00:00-05:00
Author(s): Nobuo Sato, J. J. Ethier, W. Melnitchouk, M. Hirai, S. Kumano, and A. Accardi (Jefferson Lab Angular Momentum Collaboration)
We perform the first iterative Monte Carlo (IMC) analysis of fragmentation functions constrained by all available data from single-inclusive e^{+}e^{−} annihilation into pions and kaons. The IMC method eliminates potential bias in traditional analyses based on single fits introduced by fixing parame…
[Phys. Rev. D 94, 114004] Published Fri Dec 02, 2016
Multiscale Monte Carlo equilibration: Two-color QCD with two fermion flavors
2016-12-02T10:00:00-05:00
Author(s): William Detmold and Michael G. Endres
We demonstrate the applicability of a recently proposed multiscale thermalization algorithm to two-color quantum chromodynamics (QCD) with two mass-degenerate fermion flavors. The algorithm involves refining an ensemble of gauge configurations that had been generated using a renormalization group (R…
[Phys. Rev. D 94, 114502] Published Fri Dec 02, 2016
Two-dimensional O(3) model at nonzero density: From dual lattice simulations to repulsive bosons
2016-12-02T10:00:00-05:00
Author(s): Falk Bruckmann, Christof Gattringer, Thomas Kloiber, and Tin Sulejmanpasic
We discuss the thermodynamics of the O(3) nonlinear sigma model in 1+1 dimensions at nonzero chemical potential (equivalent to a magnetic field). In its conventional field theory representation the model suffers from a sign problem. By dualizing the model, we are able to fully access the nonzero den…
[Phys. Rev. D 94, 114503] Published Fri Dec 02, 2016
Chiral solution to the Ginsparg-Wilson equation
2016-12-02T10:00:00-05:00
Author(s): Dorota M. Grabowska and David B. Kaplan
We present a chiral solution of the Ginsparg-Wilson equation. This work is motivated by our recent proposal for nonperturbatively regulating chiral gauge theories, where five-dimensional domain wall fermions couple to a four-dimensional gauge field that is extended into the extra dimension as the so…
[Phys. Rev. D 94, 114504] Published Fri Dec 02, 2016
Explanation of B→K^{(*)} l^{+} l^{−} and muon g−2, and implications at the LHC
2016-12-02T10:00:00-05:00
Author(s): Chuan-Hung Chen, Takaaki Nomura, and Hiroshi Okada
More than 3σ deviations from the standard model are observed in the angular observable P_{5}^{′} of B→K^{*}μ^{+}μ^{−} and muon g−2. To resolve these anomalies, we extend the standard model by adding two leptoquarks. It is found that the signal strength of the diphoton Higgs decay can exhibit a signi…
[Phys. Rev. D 94, 115005] Published Fri Dec 02, 2016
Diphoton excess in the 2HDM: Hastening towards instability and the nonperturbative regime
2016-12-02T10:00:00-05:00
Author(s): Enrico Bertuzzo, Pedro A. N. Machado, and Marco Taoso
In December 2015, the ATLAS and CMS collaborations presented a possible signal in the diphoton channel. Although more data have shown that the signal was likely to be only a statistical fluctuation, it is interesting to ask what can be learned if any diphoton excess would show up in future data. Her…
[Phys. Rev. D 94, 115006] Published Fri Dec 02, 2016
Applying Bayesian inference to Galileon solutions of the muon problem
2016-12-02T10:00:00-05:00
Author(s): Henry Lamm
We derive corrections to atomic energy levels from disformal couplings in Galileon theories. Through Bayesian inference, we constrain the cutoff radii and Galileon scale via these corrections. To connect different atomic systems, we assume the various cutoff radii related by a one-parameter family o…
[Phys. Rev. D 94, 115007] Published Fri Dec 02, 2016
Neutral naturalness with bifundamental gluinos
2016-12-02T10:00:00-05:00
Author(s): Tony Gherghetta, Minh Nguyen, and Zachary Thomas
We study constraints on one-loop neutral naturalness at the LHC by considering gluon partners which are required to ameliorate the tuning in the Higgs mass-squared arising at two loops. This is done with a simple orbifold model of folded supersymmetry which not only contains color-neutral stops but …
[Phys. Rev. D 94, 115008] Published Fri Dec 02, 2016
Q-balls in DBI type k field theory
2016-12-02T10:00:00-05:00
Author(s): Masashi Kuniyasu, Nobuyuki Sakai, and Kiyoshi Shiraishi
We of Q-balls in Dirac-Born-Infeld type k field theory, whose action includes a nonlinear kinetic term, sqrt[1−bg^{μν}∂_{μ}ϕ^{a}∂_{ν}ϕ^{a}]/b. Specifically, for two potentials, V_{3}=m^{2}ϕ^{2}/2−μϕ^{3}+λϕ^{4} and V_{4}=m^{2}ϕ^{2}/2−λϕ^{4}+ϕ^{6}/M^{2}, we survey equilibrium solutions for the whole p…
[Phys. Rev. D 94, 116001] Published Fri Dec 02, 2016
Moduli backreaction on inflationary attractors
2016-12-02T10:00:00-05:00
Author(s): Diederik Roest, Marco Scalisi, and Pelle Werkman
We investigate the interplay between moduli dynamics and inflation, focusing on the Kachru-Kallosh-Linde-Trivedi scenario and cosmological α-attractors. General couplings between these sectors can induce a significant backreaction and potentially destroy the inflationary regime; however, we demonstr…
[Phys. Rev. D 94, 123503] Published Fri Dec 02, 2016
Gyroscope precession along unbound equatorial plane orbits around a Kerr black hole
2016-12-02T10:00:00-05:00
Author(s): Donato Bini, Andrea Geralico, and Robert T. Jantzen
The precession of a test gyroscope along unbound equatorial plane geodesic orbits around a Kerr black hole is analyzed with respect to a static reference frame whose axes point towards the “fixed stars.” The accumulated precession angle after a complete scattering process is evaluated and compared w…
[Phys. Rev. D 94, 124002] Published Fri Dec 02, 2016
f(T) gravitational baryogenesis
2016-12-02T10:00:00-05:00
Author(s): V. K. Oikonomou and Emmanuel N. Saridakis
We investigate how baryogenesis can occur by the presence of an f(T)-related gravitational term. We study various cases of f(T) gravity, and we discuss in detail the effect of the novel terms on the baryon-to-entropy ratio. Additionally, we study the constraints imposed by the observational values o…
[Phys. Rev. D 94, 124005] Published Fri Dec 02, 2016
Wormholes and black universes without phantom fields in Einstein-Cartan theory
2016-12-02T10:00:00-05:00
Author(s): K. A. Bronnikov and A. M. Galiakhmetov
We obtain a family of regular static, spherically symmetric solutions in Einstein-Cartan theory with an electromagnetic field and a nonminimally coupled scalar field with the correct sign of kinetic energy density. At different values of its parameters, the solution, being asymptotically flat at lar…
[Phys. Rev. D 94, 124006] Published Fri Dec 02, 2016
Updated measurement of the e^{+} e^{−} →ωπ^{0} →π^{0} π^{0} γ cross section with the SND detector
2016-12-01T10:00:00-05:00
Author(s): M. N. Achasov
et al.We analyze a 37 pb^{−1} data sample collected with the SND detector at the VEPP-2000 e^{+}e^{−} collider in the center-of-mass energy range 1.05–2.00 GeV and present an updated measurement of the e^{+}e^{−}→ωπ^{0}→π^{0}π^{0}γ cross section. In particular, we correct the mistake in radiative correct…
[Phys. Rev. D 94, 112001] Published Thu Dec 01, 2016
Parametrizations of the γ^{*} N→Δ(1232) quadrupole form factors and Siegert’s theorem
2016-12-01T10:00:00-05:00
Author(s): G. Ramalho
The large N_{c} limit provides relations that can be used to calculate the γ^{*}N→Δ(1232) quadrupole form factors at low and intermediate Q^{2} under the assumption of the pion cloud dominance. There are two limitations in those parametrizations. First, the parametrization of the Coulomb quadrupole …
[Phys. Rev. D 94, 114001] Published Thu Dec 01, 2016
Double peak searches for scalar and pseudoscalar resonances at the LHC
2016-12-01T10:00:00-05:00
Author(s): Marcela Carena, Peisi Huang, Ahmed Ismail, Ian Low, Nausheen R. Shah, and Carlos E. M. Wagner
Many new physics models contain a neutral scalar resonance that can be predominantly produced via gluon fusion through loops. In such a case, there could be important effects of additional particles, that in turn may hadronize before decaying and form bound states. This interesting possibility may l…
[Phys. Rev. D 94, 115001] Published Thu Dec 01, 2016
Spontaneous CP violation in the 2HDM: Physical conditions and the alignment limit
2016-12-01T10:00:00-05:00
Author(s): B. Grzadkowski, O. M. Ogreid, and P. Osland
For the general two-Higgs-doublet model, we present conditions for having spontaneous CP violation, in terms of physical masses and couplings. These relations involve the charged Higgs mass, its cubic couplings with neutral scalars and quartic coupling, and become particularly simple in the alignmen…
[Phys. Rev. D 94, 115002] Published Thu Dec 01, 2016
Lepton number violation in 331 models
2016-12-01T10:00:00-05:00
Author(s): Renato M. Fonseca and Martin Hirsch
Different models based on the extended SU(3)_{C}×SU(3)_{L}×U(1)_{X} (331) gauge group have been proposed over the past four decades. Yet, despite being an active research topic, the status of lepton number in 331 models has not been fully addressed in the literature, and furthermore many of the orig…
[Phys. Rev. D 94, 115003] Published Thu Dec 01, 2016
Probability density function for neutrino masses and mixings
2016-12-01T10:00:00-05:00
Author(s): Jean-François Fortin, Nicolas Giasson, and Luc Marleau
The anarchy principle leading to the seesaw ensemble is studied analytically with the usual tools of random matrix theory. The probability density function for the seesaw ensemble of N×N matrices is obtained in terms of a multidimensional integral. This integral involves all light neutrino masses, l…
[Phys. Rev. D 94, 115004] Published Thu Dec 01, 2016
Neutrino propagation in the Galactic dark matter halo
2016-12-01T10:00:00-05:00
Author(s): P. F. de Salas, R. A. Lineros, and M. Tórtola
Neutrino oscillations are a widely observed and well-established phenomenon. It is also well known that deviations with respect to flavor conversion probabilities in vacuum arise due to neutrino interactions with matter. In this work, we analyze the impact of new interactions between neutrinos and t…
[Phys. Rev. D 94, 123001] Published Thu Dec 01, 2016
General properties and kinetics of spontaneous baryogenesis
2016-12-01T10:00:00-05:00
Author(s): E. V. Arbuzova, A. D. Dolgov, and V. A. Novikov
General features of spontaneous baryogenesis are studied. The relation between the time derivative of the (pseudo) Goldstone field and the baryonic chemical potential is revisited. It is shown that this relation essentially depends upon the representation chosen for the fermionic fields with nonzero…
[Phys. Rev. D 94, 123501] Published Thu Dec 01, 2016
Quintessential scale dependence from separate universe simulations
2016-12-01T10:00:00-05:00
Author(s): Chi-Ting Chiang, Yin Li, Wayne Hu, and Marilena LoVerde
By absorbing fluctuations into a local background, separate universe simulations provide a powerful technique to characterize the response of small-scale observables to the long-wavelength density fluctuations, for example those of the power spectrum and halo mass function which lead to the squeezed…
[Phys. Rev. D 94, 123502] Published Thu Dec 01, 2016
Strong deflection limit analysis and gravitational lensing of an Ellis wormhole
2016-12-01T10:00:00-05:00
Author(s): Naoki Tsukamoto
Observations of gravitational lenses in strong gravitational fields give us a clue to understanding dark compact objects. In this paper, we extend a method to obtain a deflection angle in a strong deflection limit provided by Bozza [Phys. Rev. D 66, 103001 (2002)] to apply to ultrastatic spacetimes.…
[Phys. Rev. D 94, 124001] Published Thu Dec 01, 2016
Quark self-energy in an ellipsoidally anisotropic quark-gluon plasma
2016-12-01T10:00:00-05:00
Author(s): Babak S. Kasmaei, Mohammad Nopoush, and Michael Strickland
We calculate the quark self-energy in a quark-gluon plasma that possesses an ellipsoidal momentum-space anisotropy in the local rest frame. By introducing additional transverse-momentum anisotropy parameters into the parton distribution functions, we generalize previous results which were obtained f…
[Phys. Rev. D 94, 125001] Published Thu Dec 01, 2016
Small deformation of a simple N=2 superconformal theory
2016-12-01T10:00:00-05:00
Author(s): Matthew Buican and Takahiro Nishinaka
We study an interesting relevant deformation of the simplest interacting N=2 superconformal field theory (SCFT)—the original Argyres-Douglas (AD) theory. We argue that, although this deformation is not strictly speaking Banks-Zaks–like (certain operator dimensions change macroscopically), there are …
[Phys. Rev. D 94, 125002] Published Thu Dec 01, 2016
Generalized Skyrme model with the loosely bound potential
2016-12-01T10:00:00-05:00
Author(s): Sven Bjarke Gudnason, Baiyang Zhang, and Nana Ma
We study a generalization of the loosely bound Skyrme model which consists of the Skyrme model with a sixth-order derivative term—motivated by its fluidlike properties—and the second-order loosely bound potential—motivated by lowering the classical binding energies of higher-charged Skyrmions. We us…
[Phys. Rev. D 94, 125004] Published Thu Dec 01, 2016
Universal isolation in the AdS landscape
2016-12-01T10:00:00-05:00
Author(s): U. H. Danielsson, G. Dibitetto, and S. C. Vargas
We study the universal conditions for quantum nonperturbative stability against bubble nucleation for pertubatively stable AdS vacua based on positive energy theorems. We also compare our analysis with the preexisting ones in the literature carried out within the thin-wall approximation. The aforeme…
[Phys. Rev. D 94, 126002] Published Thu Dec 01, 2016
Color screening masses from string models
2016-12-01T10:00:00-05:00
Author(s): Oleg Andreev
We use gauge or string duality to estimate the Debye screening mass at nonzero temperature and baryon chemical potential. We interpret this mass as the smallest one in the open string channel. Comparisons are made with the results from holography and lattice QCD.
[Phys. Rev. D 94, 126003] Published Thu Dec 01, 2016
Forward hadron productions in proton-proton collisions in small-x formalism
2016-11-30T10:00:00-05:00
Author(s): Kazuhiro Watanabe and Bo-Wen Xiao
Employing the so-called hybrid formalism, we calculate the cross section of inclusive hadron production in proton-proton collisions at forward rapidity in small-x formalism at one-loop order. For the case of hadron production at forward rapidity, we can use collinear parton distributions for the pro…
[Phys. Rev. D 94, 094046] Published Wed Nov 30, 2016
Missing energy signature from invisible decays of dark photons at the CERN SPS
2016-11-30T10:00:00-05:00
Author(s): S. N. Gninenko, N. V. Krasnikov, M. M. Kirsanov, and D. V. Kirpichnikov
The dark photon (A^{′}) production through the mixing with the bremsstrahlung photon from the electron scattering off nuclei can be accompanied by the dominant invisible A^{′} decay into dark-sector particles. In this work we discuss the missing energy signature of this process in the experiment NA6…
[Phys. Rev. D 94, 095025] Published Wed Nov 30, 2016
L_{μ} −L_{τ} theory of Higgs flavor violation and (g−2)_{μ}
2016-11-30T10:00:00-05:00
Author(s): Wolfgang Altmannshofer, Marcela Carena, and Andreas Crivellin
Several experiments reported hints for the violation of lepton flavor or lepton flavor universality in processes involving muons. Most prominently, there is the hint for a nonzero rate of the flavor violating Higgs decay h→τμ at the LHC, as well as the hint for lepton flavor universality violation i…
[Phys. Rev. D 94, 095026] Published Wed Nov 30, 2016
Lines and boxes: Unmasking Dynamical Dark Matter through correlations in the MeV gamma-ray spectrum
2016-11-30T10:00:00-05:00
Author(s): Kimberly K. Boddy, Keith R. Dienes, Doojin Kim, Jason Kumar, Jong-Chul Park, and Brooks Thomas
Identifying signatures of dark matter at indirect-detection experiments is generally more challenging for scenarios involving nonminimal dark sectors such as Dynamical Dark Matter (DDM) than for scenarios involving a single dark particle. This additional difficulty arises because the partitioning of…
[Phys. Rev. D 94, 095027] Published Wed Nov 30, 2016
Study of WIMP annihilations into a pair of on-shell scalar mediators
2016-11-30T10:00:00-05:00
Author(s): Lian-Bao Jia
In this article, we focus on new scalar ϕ mediated scalar/vectorial weakly interacting massive particles (WIMPs) with ϕ’s mass slightly below the WIMP mass. To explain the Galactic center 1–3 GeV gamma-ray excess, here we consider the case that a WIMP pair predominantly annihilates into an on-shell …
[Phys. Rev. D 94, 095028] Published Wed Nov 30, 2016
a_{1} (1420) peak as the πf_{0} (980) decay mode of the a_{1} (1260)
2016-11-30T10:00:00-05:00
Author(s): F. Aceti, L. R. Dai, and E. Oset
We study the decay mode of the a_{1}(1260) into a π^{+} in p wave and the f_{0}(980) that decays into π^{+}π^{−} in s wave. The mechanism proceeds via a triangular mechanism where the a_{1}(1260) decays into K^{*}K[over ¯], the K^{*} decays to an external π^{+} and an internal K that fuses with the …
[Phys. Rev. D 94, 096015] Published Wed Nov 30, 2016
High-energy tail of the Galactic Center gamma-ray excess
2016-11-30T10:00:00-05:00
Author(s): Tim Linden, Nicholas L. Rodd, Benjamin R. Safdi, and Tracy R. Slatyer
Observations by the Fermi-LAT have uncovered a bright, spherically symmetric excess surrounding the center of the Milky Way Galaxy. The spectrum of the γ-ray excess peaks sharply at an energy ∼2 GeV, exhibiting a hard spectrum at lower energies, and falls off quickly above an energy ∼5 GeV. The sp…
[Phys. Rev. D 94, 103013] Published Wed Nov 30, 2016
No-scalar-hair theorem for spherically symmetric reflecting stars
2016-11-30T10:00:00-05:00
Author(s): Shahar Hod
It is proved that spherically symmetric compact reflecting objects cannot support static bound-state configurations made of scalar fields whose self-interaction potential V(ψ^{2}) is a monotonically increasing function of its argument. Our theorem rules out, in particular, the existence of massive s…
[Phys. Rev. D 94, 104073] Published Wed Nov 30, 2016
Modes of the Kerr geometry with purely imaginary frequencies
2016-11-30T10:00:00-05:00
Author(s): Gregory B. Cook and Maxim Zalutskiy
In this paper, we examine the behavior of modes of the Kerr geometry when the mode’s frequency is purely imaginary. We demonstrate that quasinormal modes must be polynomial in nature if their frequency is purely imaginary, and present a method for computing such modes. The nature of these modes, how…
[Phys. Rev. D 94, 104074] Published Wed Nov 30, 2016
Spinfoams near a classical curvature singularity
2016-11-30T10:00:00-05:00
Author(s): Muxin Han and Mingyi Zhang
We apply the technique of the spinfoam to study space-time, which, classically, contains a curvature singularity. We derive from the full covariant loop quantum gravity (LQG) that the region near curvature singularity has to be of the strong quantum gravity effect. We show that the spinfoam configur…
[Phys. Rev. D 94, 104075] Published Wed Nov 30, 2016
Polymer quantization of a self-gravitating thin shell
2016-11-30T10:00:00-05:00
Author(s): Jonathan Ziprick, Jack Gegenberg, and Gabor Kunstatter
We study the quantum mechanics of self-gravitating thin shell collapse by solving the polymerized Wheeler-DeWitt equation. We obtain the energy spectrum and solve the time-dependent equation using numerics. In contradistinction to the continuum theory, we are able to consistently quantize the theory…
[Phys. Rev. D 94, 104076] Published Wed Nov 30, 2016
Neutrino flux predictions for the NuMI beam
2016-11-29T10:00:00-05:00
Author(s): L. Aliaga
et al. (MINERνA Collaboration)
Knowledge of the neutrino flux produced by the Neutrinos at the Main Injector (NuMI) beamline is essential to the neutrino oscillation and neutrino interaction measurements of the MINERvA, MINOS+, NOvA and MicroBooNE experiments at Fermi National Accelerator Laboratory. We have produced a flux predi…
[Phys. Rev. D 94, 092005] Published Tue Nov 29, 2016
Search for a dark vector gauge boson decaying to π^{+} π^{−} using η→π^{+} π^{−} γ decays
2016-11-29T10:00:00-05:00
Author(s): E. Won
et al. (Belle Collaboration)
We report a search for a dark vector gauge boson U^{′} that couples to quarks in the decay chain D^{*+}→D^{0}π^{+},D^{0}→K_{S}^{0}η,η→U^{′}γ, U^{′}→π^{+}π^{−}. No signal is found and we set a mass-dependent limit on the baryonic fine structure constant of 10^{−3}−10^{−2} in the U^{′} mass range of 2…
[Phys. Rev. D 94, 092006] Published Tue Nov 29, 2016
Nonstandard neutrino interactions in supernovae
2016-11-29T10:00:00-05:00
Author(s): Charles J. Stapleford, Daavid J. Väänänen, James P. Kneller, Gail C. McLaughlin, and Brandon T. Shapiro
Nonstandard interactions (NSI) of neutrinos with matter can significantly alter neutrino flavor evolution in supernovae with the potential to impact explosion dynamics, nucleosynthesis, and the neutrinos signal. In this paper, we explore, both numerically and analytically, the landscape of neutrino …
[Phys. Rev. D 94, 093007] Published Tue Nov 29, 2016
Matter-induced magnetic moment and neutrino helicity rotation in external fields
2016-11-29T10:00:00-05:00
Author(s): Alexei I. Ternov
The induced magnetic moment that arises due to the propagation of neutrinos in a dispersive medium can affect the dynamics of the neutrino spin in an external electromagnetic field. In particular, it can cause a helicity flip of a massive neutrino in a magnetic field. In some astrophysical media, th…
[Phys. Rev. D 94, 093008] Published Tue Nov 29, 2016
Study of weak corrections to Drell-Yan, top-quark pair, and dijet production at high energies with MCFM
2016-11-29T10:00:00-05:00
Author(s): John M. Campbell, Doreen Wackeroth, and Jia Zhou
Electroweak (EW) corrections can be enhanced at high energies due to the soft or collinear radiation of virtual and real W and Z bosons that result in Sudakov-like corrections of the form α_{W}^{l}log^{n}(Q^{2}/M_{W,Z}^{2}), where α_{W}=α/(4πsin^{2}θ_{W}) and n≤2l−1. The inclusion of EW corrections …
[Phys. Rev. D 94, 093009] Published Tue Nov 29, 2016
Two-photon interactions with Majorana fermions
2016-11-29T10:00:00-05:00
Author(s): David C. Latimer
Because Majorana fermions are their own antiparticles, their electric and magnetic dipole moments must vanish, leaving the anapole moment as their only static electromagnetic property. But the existence of induced dipole moments is not necessarily prohibited. Through a study of real Compton scatteri…
[Phys. Rev. D 94, 093010] Published Tue Nov 29, 2016
Strange-quark asymmetry in the proton in chiral effective theory
2016-11-29T10:00:00-05:00
Author(s): X. G. Wang, Chueng-Ryong Ji, W. Melnitchouk, Y. Salamu, A. W. Thomas, and P. Wang
We perform a comprehensive analysis of the strange-antistrange parton distribution function (PDF) asymmetry in the proton in the framework of chiral effective theory, including the full set of lowest-order kaon loop diagrams with off-shell and contact interactions, in addition to the usual on-shell …
[Phys. Rev. D 94, 094035] Published Tue Nov 29, 2016
Next-to-leading order QCD corrections to χ_{cJ} W^{+} b associated production from top-quark decay
2016-11-29T10:00:00-05:00
Author(s): Zhou Chao, Li Gang, Song Mao, Ma Wen-Gan, and Zhang Ren-You
We calculate the next-to-leading order QCD corrections to the excited charmonium χ_{cJ} associated with W^{+}b production from top-quark decay. Our results show that detecting the χ_{c0} production from top-quark decay is very difficult, but the χ_{c1} and χ_{c2} productions have the potential to be…
[Phys. Rev. D 94, 094045] Published Tue Nov 29, 2016
Topology in the SU(N_{f} ) chiral symmetry restored phase of unquenched QCD and axion cosmology
2016-11-29T10:00:00-05:00
Author(s): Vicente Azcoiti
We investigate the topological properties of unquenched QCD on the basis of numerical results of simulations at fixed topological charge, recently reported by Borsanyi et al. We demonstrate that their results for the mean value of the chiral condensate at fixed topological charge are inconsistent wi…
[Phys. Rev. D 94, 094505] Published Tue Nov 29, 2016
SU(2) gauge theory with two fundamental flavors: A minimal template for model building
2016-11-29T10:00:00-05:00
Author(s): Rudy Arthur, Vincent Drach, Martin Hansen, Ari Hietanen, Claudio Pica, and Francesco Sannino
We investigate the continuum spectrum of the SU(2) gauge theory with N_{f}=2 flavors of fermions in the fundamental representation. This model provides a minimal template which is ideal for a wide class of Standard Model extensions featuring novel strong dynamics that range from composite (Goldstone…
[Phys. Rev. D 94, 094507] Published Tue Nov 29, 2016
Leptogenesis and neutral gauge bosons
2016-11-29T10:00:00-05:00
Author(s): Julian Heeck and Daniele Teresi
We consider low-scale leptogenesis via right-handed neutrinos N coupled to a Z^{′} boson, with gauged U(1)_{B−L} as a simple realization. Keeping the neutrinos sufficiently out of equilibrium puts strong bounds on the Z^{′} coupling strength and mass, our focus being on light Z^{′} and N, testable i…
[Phys. Rev. D 94, 095024] Published Tue Nov 29, 2016
Synthetic model of the gravitational wave background from evolving binary compact objects
2016-11-29T10:00:00-05:00
Author(s): Irina Dvorkin, Jean-Philippe Uzan, Elisabeth Vangioni, and Joseph Silk
Modeling the stochastic gravitational wave background from various astrophysical sources is a key objective in view of upcoming observations with ground- and space-based gravitational wave observatories such as Advanced LIGO, VIRGO, eLISA, and the pulsar timing array. We develop a synthetic model fr…
[Phys. Rev. D 94, 103011] Published Tue Nov 29, 2016
Nonminimal coupling and inflationary attractors
2016-11-29T10:00:00-05:00
Author(s): Zhu Yi (易竹) and Yungui Gong (龚云贵)
We show explicitly how the T model, E model, and Hilltop inflations are obtained from the general scalar-tensor theory of gravity with arbitrary conformal factors in the strong coupling limit. We argue that ξ attractors can give any observables n_{s} and r by this method. The existence of attractors…
[Phys. Rev. D 94, 103527] Published Tue Nov 29, 2016
Consistency of warm k-inflation
2016-11-29T10:00:00-05:00
Author(s): Zhi-Peng Peng, Jia-Ning Yu, Jian-Yang Zhu, and Xiao-Min Zhang
We extend k-inflation which is a type of kinetically driven inflationary model under the standard inflationary scenario to a possible warm inflationary scenario. The dynamical equations of this warm k-inflation model are obtained. We rewrite the slow-roll parameters which are different from the usua…
[Phys. Rev. D 94, 103531] Published Tue Nov 29, 2016
Metamorphosis of the cosmological constant and 5D origin of the fiducial metric
2016-11-29T10:00:00-05:00
Author(s): Gregory Gabadadze and Siqing Yu
In a recently proposed theory, the cosmological constant (CC) does not curve spacetime in our Universe, but instead gets absorbed into another universe endowed with its own dynamical metric, nonlocally coupled to ours. Thus, one achieves a long standing goal of removing entirely any cosmological con…
[Phys. Rev. D 94, 104059] Published Tue Nov 29, 2016
Constraining the Kerr parameters via x-ray reflection spectroscopy
2016-11-29T10:00:00-05:00
Author(s): M. Ghasemi-Nodehi and Cosimo Bambi
In a recent paper [Ghasemi-Nodehi and Bambi, Eur. Phys. J. C 76, 290 (2016)], we have proposed a new parametrization for testing the Kerr nature of astrophysical black hole candidates. In the present work, we study the possibility of constraining the “Kerr parameters” of our proposal using x-ray ref…
[Phys. Rev. D 94, 104062] Published Tue Nov 29, 2016
Gravitational wave memory: A new approach to study modified gravity
2016-11-29T10:00:00-05:00
Author(s): Song Ming Du and Atsushi Nishizawa
It is well known that two types of gravitational wave memory exist in general relativity (GR): the linear memory and the nonlinear, or Christodoulou, memory. These effects, especially the latter, depend on the specific form of the Einstein equation. It can then be speculated that, in modified theori…
[Phys. Rev. D 94, 104063] Published Tue Nov 29, 2016
Thermodynamics of (2+1)-dimensional charged black holes with power-law Maxwell field
2016-11-29T10:00:00-05:00
Author(s): M. Dehghani
In this work, the three-dimensional nonlinearly charged black holes have been considered with a power-law modified electromagnetic theory. The black hole solutions to Einstein’s three-dimensional field equations with a negative cosmological constant have been constructed in the presence of power-law…
[Phys. Rev. D 94, 104071] Published Tue Nov 29, 2016
Finsler pp-waves
2016-11-29T10:00:00-05:00
Author(s): Andrea Fuster and Cornelia Pabst
In this work we present Finsler gravitational waves. These are a Finslerian version of the well-known pp-waves, generalizing the very special relativity line element. Our Finsler pp-waves are an exact solution of Finslerian Einstein’s equations in vacuum and describe gravitational waves propagating …
[Phys. Rev. D 94, 104072] Published Tue Nov 29, 2016
SUSY in silico: Numerical D-brane bound state spectroscopy
2016-11-29T10:00:00-05:00
Author(s): Tarek Anous
We numerically construct the supersymmetric and non-supersymmetric wave functions of an N=4 quiver quantum mechanics with two Abelian nodes and a single arrow. This model captures the dynamics of a pair of wrapped D-branes interacting via a single light string mode. A dimensionless parameter ν, whic…
[Phys. Rev. D 94, 106014] Published Tue Nov 29, 2016
Holographic incoherent transport in Einstein-Maxwell-dilaton gravity
2016-11-29T10:00:00-05:00
Author(s): Zhenhua Zhou, Yi Ling, and Jian-Pin Wu
Recent progress in the holographic approach has made it more transparent that each conductivity can be decomposed into the coherent contribution due to momentum relaxation and the incoherent contribution due to intrinsic current relaxation. In this paper we investigate this decomposition in the fram…
[Phys. Rev. D 94, 106015] Published Tue Nov 29, 2016
Rare meson decays with three pairs of quasidegenerate heavy neutrinos
2016-11-28T10:00:00-05:00
Author(s): Gastón Moreno and Jilberto Zamora-Saa
We consider a low-scale seesaw scenario where the masses of its heavy Majorana neutrinos are arranged in a pattern of three quasidegenerate pairs, in the range of O(1–6 GeV). Since they can violate lepton number by two units, they contribute to rare decays of D_{s} and B_{c} mesons, providing the c…
[Phys. Rev. D 94, 093005] Published Mon Nov 28, 2016
Two-loop induced Majorana neutrino mass in a radiatively induced quark and lepton mass model
2016-11-28T10:00:00-05:00
Author(s): Takaaki Nomura and Hiroshi Okada
A two-loop induced radiative neutrino model is proposed as an extension of our previous work in which the first- and second-generation standard model fermion masses are generated at the one-loop level in both quark and lepton sectors. Then we discuss the current neutrino oscillation data, lepton fla…
[Phys. Rev. D 94, 093006] Published Mon Nov 28, 2016
Light baryons and their excitations
2016-11-28T10:00:00-05:00
Author(s): Gernot Eichmann, Christian S. Fischer, and Hèlios Sanchis-Alepuz
We study ground states and excitations of light octet and decuplet baryons within the framework of Dyson-Schwinger and Faddeev equations. We improve upon similar approaches by explicitly taking into account the momentum-dependent dynamics of the quark-gluon interaction that leads to dynamical chiral…
[Phys. Rev. D 94, 094033] Published Mon Nov 28, 2016
Radiative h_{c/b} decays to η or η′
2016-11-28T10:00:00-05:00
Author(s): Ruilin Zhu and Jian-Ping Dai
Motivated by recent measurements of the radiative decay rates of the P-wave spin singlet charmonium h_{c} to the light meson η or η^{′} by the BESIII Collaboration, we investigate the decay rates of these channels at order αα_{s}^{4}. The photon is radiated mainly from charm quark pairs in the lowes…
[Phys. Rev. D 94, 094034] Published Mon Nov 28, 2016
Wigner, Husimi, and generalized transverse momentum dependent distributions in the color glass condensate
2016-11-28T10:00:00-05:00
Author(s): Yoshikazu Hagiwara, Yoshitaka Hatta, and Takahiro Ueda
We study the phase-space distributions of gluons inside a nucleon/nucleus in the small-x regime including the gluon saturation effect. This can be done by using the relation between the gluon Wigner distribution and the dipole S matrix at small x, which latter satisfies the Balitsky-Kovchegov (BK) e…
[Phys. Rev. D 94, 094036] Published Mon Nov 28, 2016
Aspects of the low-energy constants in the chiral Lagrangian for charmed mesons
2016-11-28T10:00:00-05:00
Author(s): Meng-Lin Du, Feng-Kun Guo, Ulf-G. Meißner, and De-Liang Yao
We investigate the numerical values of the low-energy constants in the chiral effective Lagrangian for the interactions between the charmed mesons and the lightest pseudoscalar mesons, the Goldstone bosons of the spontaneous breaking of chiral symmetry for QCD. This problem is tackled from two sides…
[Phys. Rev. D 94, 094037] Published Mon Nov 28, 2016
Rare top decay t→cγ with flavor changing neutral scalar interactions in two Higgs doublet model
2016-11-28T10:00:00-05:00
Author(s): R. Gaitán, J. H. Montes de Oca, E. A. Garcés, and R. Martinez
Models beyond the standard model with extra scalars have been highly motivated by the recent discovery of the Higgs boson. The two Higgs doublet model type III considers the most general case for the scalar potential, allowing mixing between neutral CP-even and CP-odd scalar fields. This work presen…
[Phys. Rev. D 94, 094038] Published Mon Nov 28, 2016
Prediction of anomalous ϒ(5S)→ϒ(1^{3} D_{J} )η transitions
2016-11-28T10:00:00-05:00
Author(s): Bo Wang, Xiang Liu, and Dian-Yong Chen
In this work, we study the hadronic loop contribution to the ϒ(5S)→ϒ(1^{3}D_{J})η (J=1, 2, 3) transitions. We predict that the branching ratios of ϒ(5S)→ϒ(1^{3}D_{1})η, ϒ(5S)→ϒ(1^{3}D_{2})η, and ϒ(5S)→ϒ(1^{3}D_{3})η can reach up to (0.5–5.1)×10^{−3}, (0.7–7.5)×10^{−3} and (0.9–9.6)×10^{−4}, respecti…
[Phys. Rev. D 94, 094039] Published Mon Nov 28, 2016
Transverse force on transversely polarized quarks in longitudinally polarized nucleons
2016-11-28T10:00:00-05:00
Author(s): Manal Abdallah and Matthias Burkardt
We study the semiclassical interpretation of the x^{3} and x^{4} moments of twist-3 parton distribution functions (PDFs). While no semiclassical interpretation for the higher moments of g_{T}(x) and e(x) was found, the x^{3} moment of the chirally odd spin-dependent twist-3 PDF h_{L}^{3}(x) can be r…
[Phys. Rev. D 94, 094040] Published Mon Nov 28, 2016
Masses of open charm and bottom tetraquark states in a relativized quark model
2016-11-28T10:00:00-05:00
Author(s): Qi-Fang Lü and Yu-Bing Dong
We study the masses of open charm and bottom tetraquark states within the diquark-antidiquark scenario in the relativized quark model proposed by Godfrey and Isgur. The diquark and antidiquark masses are first solved by relativized quark potential, and then treated as the usual antiquark and quark, …
[Phys. Rev. D 94, 094041] Published Mon Nov 28, 2016
Exact vector channel sum rules at finite temperature and their applications to lattice QCD data analysis
2016-11-28T10:00:00-05:00
Author(s): Philipp Gubler and Daisuke Satow
We derive three exact sum rules for the spectral function of the electromagnetic current with zero spatial momentum at finite temperature. Two of them are derived in this paper for the first time. We explicitly check that these sum rules are satisfied in the weak coupling regime and examine which su…
[Phys. Rev. D 94, 094042] Published Mon Nov 28, 2016
Spectral properties of the ρ meson in a magnetic field
2016-11-28T10:00:00-05:00
Author(s): Snigdha Ghosh, Arghya Mukherjee, Mahatsab Mandal, Sourav Sarkar, and Pradip Roy
We calculate the rho meson mass in a weak magnetic field using effective ρππ interaction. It is seen that both ρ^{0} and ρ^{±} masses decrease with the magnetic field in vacuum. The ρ meson dispersion relation has been calculated and shown to be different for ρ^{0} and ρ^{±}. We also calculate the ρ…
[Phys. Rev. D 94, 094043] Published Mon Nov 28, 2016
Revealing the inner structure of the newly observed D_{2}^{*} (3000)
2016-11-28T10:00:00-05:00
Author(s): Jun-Zhang Wang, Dian-Yong Chen, Qin-Tao Song, Xiang Liu, and Takayuki Matsuki
Stimulated by the D_{2}^{*}(3000) recently observed by LHCb, we study the decay behaviors of the 3P and 2F charmed mesons. Comparing the masses and decay properties of the 3^{3}P_{2} and 2^{3}F_{2} with the observed D_{2}^{*}(3000), we conclude that the most probable assignment is the 3^{3}P_{2}, wh…
[Phys. Rev. D 94, 094044] Published Mon Nov 28, 2016
Casimir effect on the lattice: U(1) gauge theory in two spatial dimensions
2016-11-28T10:00:00-05:00
Author(s): M. N. Chernodub, V. A. Goy, and A. V. Molochkov
We propose a general numerical method to study the Casimir effect in lattice gauge theories. We illustrate the method by calculating the energy density of zero-point fluctuations around two parallel wires of finite static permittivity in Abelian gauge theory in two spatial dimensions. We discuss var…
[Phys. Rev. D 94, 094504] Published Mon Nov 28, 2016
Singularity-free model of electrically charged fermionic particles and gauged Q-balls
2016-11-28T10:00:00-05:00
Author(s): Vladimir Dzhunushaliev, Arislan Makhmudov, and Konstantin G. Zloshchastiev
We propose a model of an electrically charged fermion as a regular localized solution of electromagnetic and spinor fields interacting with a physical vacuum, which is phenomenologically described as a logarithmic superfluid. We analytically study the asymptotic behavior of the solution, while obtai…
[Phys. Rev. D 94, 096012] Published Mon Nov 28, 2016
Radial vibrations of BPS skyrmions
2016-11-28T10:00:00-05:00
Author(s): C. Adam, M. Haberichter, T. Romanczukiewicz, and A. Wereszczynski
We study radial vibrations of spherically symmetric Skyrmions in the Bogomol’nyi-Prasad-Sommerfield Skyrme model. Concretely, we numerically solve the linearized field equations for small fluctuations in a Skyrmion background, both for linearly stable oscillations and for (unstable) resonances. This…
[Phys. Rev. D 94, 096013] Published Mon Nov 28, 2016
QCD corrections and long-range mechanisms of neutrinoless double beta decay
2016-11-28T10:00:00-05:00
Author(s): C. Arbeláez, M. González, M. Hirsch, and S. G. Kovalenko
Recently it has been demonstrated that QCD corrections are numerically important for short-range mechanisms (SRM) of neutrinoless double beta decay (0νββ) mediated by heavy particle exchange. This is due to the effect of color mismatch for certain effective operators, which leads to mixing between d…
[Phys. Rev. D 94, 096014] Published Mon Nov 28, 2016
Testing Einstein’s weak equivalence principle with a 0.4-nanosecond giant pulse of the Crab pulsar
2016-11-28T10:00:00-05:00
Author(s): Yuan-Pei Yang and Bing Zhang
Einstein’s weak equivalence principle (EEP) can be tested through the arrival time delay between photons with different frequencies. Assuming that the arrival time delay is solely caused by the gravitational potential of the Milky Way, we show that a “nano-shot” giant pulse with a time delay between…
[Phys. Rev. D 94, 101501(R)] Published Mon Nov 28, 2016
Impact of the tidal p−g instability on the gravitational wave signal from coalescing binary neutron stars
2016-11-28T10:00:00-05:00
Author(s): Reed Essick, Salvatore Vitale, and Nevin N. Weinberg
Recent studies suggest that coalescing neutron stars are subject to a fluid instability involving the nonlinear coupling of the tide to p modes and g modes. Its influence on the inspiral dynamics and thus the gravitational wave signal is, however, uncertain because we do not know precisely how the i…
[Phys. Rev. D 94, 103012] Published Mon Nov 28, 2016
Dark energy at early times, the Hubble parameter, and the string axiverse
2016-11-28T10:00:00-05:00
Author(s): Tanvi Karwal and Marc Kamionkowski
Precise measurements of the cosmic microwave background (CMB) power spectrum are in excellent agreement with the predictions of the standard ΛCDM cosmological model. However, there is some tension between the value of the Hubble parameter H_{0} inferred from the CMB and that inferred from observatio…
[Phys. Rev. D 94, 103523] Published Mon Nov 28, 2016
Testing the imprint of nonstandard cosmologies on void profiles using Monte Carlo random walks
2016-11-28T10:00:00-05:00
Author(s): Ixandra Achitouv
Using Monte Carlo random walks of a log-normal distribution, we show how to qualitatively study void properties for nonstandard cosmologies. We apply this method to an f(R) modified gravity model and recover the N-body simulation results of [I. Achitouv, M. Baldi, E. Puchwein, and J. Weller, Phys. R…
[Phys. Rev. D 94, 103524] Published Mon Nov 28, 2016
Ruling out the light weakly interacting massive particle explanation of the Galactic 511 keV line
2016-11-28T10:00:00-05:00
Author(s): Ryan J. Wilkinson, Aaron C. Vincent, Céline Bœhm, and Christopher McCabe
Over the past few decades, an anomalous 511 keV gamma-ray line has been observed from the center of the Milky Way. Dark matter (DM) in the form of light (≲10 MeV) weakly interacting massive particles (WIMPs) annihilating into electron-positron pairs has been one of the leading hypotheses of the obs…
[Phys. Rev. D 94, 103525] Published Mon Nov 28, 2016
Quantum field theory of interacting dark matter and dark energy: Dark monodromies
2016-11-28T10:00:00-05:00
Author(s): Guido D’Amico, Teresa Hamill, and Nemanja Kaloper
We discuss how to formulate a quantum field theory of dark energy interacting with dark matter. We show that the proposals based on the assumption that dark matter is made up of heavy particles with masses which are very sensitive to the value of dark energy are strongly constrained. Quintessence-ge…
[Phys. Rev. D 94, 103526] Published Mon Nov 28, 2016
Anomaly-driven inverse cascade and inhomogeneities in a magnetized chiral plasma in the early Universe
2016-11-28T10:00:00-05:00
Author(s): E. V. Gorbar, I. Rudenok, I. A. Shovkovy, and S. Vilchinskii
By making use of a simple model that captures the key features of the anomalous Maxwell equations, we study the role of inhomogeneities on the evolution of magnetic fields in a chiral plasma. We find that inhomogeneities of the chiral asymmetry by themselves do not prevent the anomaly-driven inverse…
[Phys. Rev. D 94, 103528] Published Mon Nov 28, 2016