We present a measurement of the total $WW$ and $WZ$ production cross sections in $p\overline{p}$ collision at $\sqrt{s}=1.96\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{TeV}$, in a final state consistent with leptonic $W$ boson decay and jets originating from heavy-flavor quarks from either a $W$ or a $Z$ boson decay. This analysis uses the full data set collected with the…

[Phys. Rev. D 94, 032008] Published Tue Aug 23, 2016

]]>The process ${e}^{+}{e}^{-}\to {\eta}^{\prime}J/\psi $ is observed for the first time with a statistical significance of $8.6\sigma $ at center-of-mass energy $\sqrt{s}=4.226\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{GeV}$ and $7.3\sigma $ at $\sqrt{s}=4.258\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{GeV}$ using data samples collected with the BESIII detector. The Born cross sections are measured to be $(3.7\pm 0.7\pm 0.3)$ and $(3.9\pm 0.8\pm 0.3)\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{pb}$ at $\sqrt{s}=\mathrm{4.22\dots}$

[Phys. Rev. D 94, 032009] Published Tue Aug 23, 2016

]]>The process ${e}^{+}{e}^{-}\to \omega \eta {\pi}^{0}$ is studied in the energy range 1.45–2.00 GeV using data with an integrated luminosity of $33\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{pb}}^{-1}$ accumulated by the SND detector at the ${e}^{+}{e}^{-}$ collider VEPP-2000. The ${e}^{+}{e}^{-}\to \omega \eta {\pi}^{0}$ cross section is measured for the first time. The cross section has a threshold near 1.75 GeV. Its val…

[Phys. Rev. D 94, 032010] Published Tue Aug 23, 2016

]]>In the symmetric string fragmentation recipe adopted by PYTHIA for jet simulations, the transverse momenta of successive quarks are uncorrelated. This is a simplification but has no theoretical basis. Transverse momentum correlations are naturally expected, for instance, in a covariant multiperipher…

[Phys. Rev. D 94, 034034] Published Tue Aug 23, 2016

]]>The parton distribution functions (PDFs) of the proton are one of the essential ingredients to describe physics processes at hadron colliders. The $Z$ boson production data at the LHC have a potential to constrain PDFs, especially the gluon distribution. In this study the CMS measurement of the inclus…

[Phys. Rev. D 94, 034035] Published Tue Aug 23, 2016

]]>The recent observation by the D0 collaboration of a narrow structure $X(5568)$ consisting of four different quark flavors $bdus$, has not been confirmed by LHCb. In the tightly bound diquark model, we estimate the lightest $bdus$, ${0}^{+}$ tetraquark at a mass of about 5770 MeV, approximately 200 MeV above the …

[Phys. Rev. D 94, 034036] Published Tue Aug 23, 2016

]]>The neutral component of a real pseudoscalar electroweak (EW) triplet can produce a diphoton excess at 750 GeV, if it is somewhat mixed with an EW singlet pseudoscalar. This triplet-singlet mixing allows for greater freedom in the diboson branching ratios than the singlet-only case, but it is still …

[Phys. Rev. D 94, 035021] Published Tue Aug 23, 2016

]]>We study the prospects for probing a gauge singlet scalar-driven strong first-order electroweak phase transition with a future proton-proton collider in the 100 TeV range. Singlet-Higgs mixing enables resonantly enhanced di-Higgs production, potentially aiding discovery prospects. We perform Monte C…

[Phys. Rev. D 94, 035022] Published Tue Aug 23, 2016

]]>Inspired by the tachyon-free nonsupersymmetric heterotic $\mathrm{SO}(16)\times \mathrm{SO}(16)$ string we consider a special class of nonsupersymmetric field theories: those that can be obtained from supersymmetric field theories by supersymmetry-breaking twists. We argue that such theories, like their supersymmetric counte…

[Phys. Rev. D 94, 041704(R)] Published Tue Aug 23, 2016

]]>We set the first upper limit on the stochastic gravitational wave (GW) background in the frequency range of 1–5 Hz using a torsion-bar antenna (TOBA). A TOBA is a GW detector designed for the detection of low frequency GWs on the ground, with two orthogonal test masses rotated by the incident GWs. W…

[Phys. Rev. D 94, 042003] Published Tue Aug 23, 2016

]]>We show that if a spectator linear isocurvature dark matter field degree of freedom has a constant mass through its entire evolution history, the maximum measurable isocurvature spectral index that is consistent with the current tensor-to-scalar ratio bound of about $r\lesssim 0.1$ is about ${n}_{I}\lesssim 2.4$, even if ex…

[Phys. Rev. D 94, 043524] Published Tue Aug 23, 2016

]]>We determine the forecast errors on the absolute neutrino mass scale and the equation of state of dark energy by combining synthetic data from the Dark Energy Survey (DES) and the cosmic microwave background Planck surveyor. We use angular clustering of galaxies for DES in seven redshift shells up t…

[Phys. Rev. D 94, 043525] Published Tue Aug 23, 2016

]]>It has become standard practice to take the logarithmic growth of the scale factor as a measure of the amount of inflation, despite the well-known fact that this is only an approximation for the true amount of inflation required to solve the horizon and flatness problems. The aim of this work is to …

[Phys. Rev. D 94, 043526] Published Tue Aug 23, 2016

]]>We revisit the constraints on the small scale density perturbations ($1{0}^{4}\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{Mpc}}^{-1}\lesssim k\lesssim 1{0}^{5}\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{Mpc}}^{-1}$) from the modification of the freeze-out value of the neutron-proton ratio at the big-bang nucleosynthesis era. Around the freeze-out temperature $T\sim 0.5\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{MeV}$, the universe can be divided into several local pa…

[Phys. Rev. D 94, 043527] Published Tue Aug 23, 2016

]]>The Ernst formulation of the Einstein equations is generalized to accommodate $f(R)$ theories of gravity. It is shown that, as in general relativity, the axisymmetric $f(R)$ field equations for a vacuum spacetime that is either stationary or cylindrically symmetric reduce to a single, nonlinear differen…

[Phys. Rev. D 94, 044045] Published Tue Aug 23, 2016

]]>We study planar Aharony-Bergman-Jafferis-Maldacena (ABJM) theory in a limit where one coupling is negligible compared to the other. We provide a recipe for exactly solving the expectation value of bosonic Bogomol’nyi-Prasad-Sommerfield (BPS) Wilson loops on arbitrary smooth contours, or the leading …

[Phys. Rev. D 94, 045011] Published Tue Aug 23, 2016

]]>Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses proton-proton collision data corresponding to an integrated luminosity of $3.2\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{fb}}^{-1}$ at $\sqrt{s}=13\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{TeV}$ collected in 2015 with the ATLAS detector at the Large Hadr…

[Phys. Rev. D 94, 032005] Published Mon Aug 22, 2016

]]>Measurements of the top-antitop quark pair production charge asymmetry in the dilepton channel, characterized by two high-${p}_{\mathrm{T}}$ leptons (electrons or muons), are presented using data corresponding to an integrated luminosity of $20.3\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{fb}}^{-1}$ from $pp$ collisions at a center-of-mass energy $\sqrt{s}=8\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{TeV}$ collected…

[Phys. Rev. D 94, 032006] Published Mon Aug 22, 2016

]]>The differential cross sections for inclusive neutral pions as a function of transverse and longitudinal momentum in the very forward-rapidity region have been measured at the LHC with the LHC forward detector in proton-proton collisions at $\sqrt{s}=2.76$ and 7 TeV and in proton-lead collisions at nucleon-n…

[Phys. Rev. D 94, 032007] Published Mon Aug 22, 2016

]]>Direct, resonant production of the charmonium states ${\chi}_{c1}$ and ${\chi}_{c2}$ in electron-positron annihilation is investigated. Depending on details of the model, a sizeable variation of the prediction for the production cross section is anticipated. It is demonstrated that resonant production could be observed…

[Phys. Rev. D 94, 034033] Published Mon Aug 22, 2016

]]>The renormalizable coloron model, which has previously been shown in the literature to be consistent with a wide array of theoretical and precision electroweak constraints, includes a pair of spinless bosons (one scalar, one pseudoscalar). We show that either of them, or both together if they are de…

[Phys. Rev. D 94, 035018] Published Mon Aug 22, 2016

]]>The recent LHC Run-2 data have shown a possible excess in diphoton events, suggesting the existence of a new resonance $\varphi $ with mass $M\sim 750\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{GeV}$. If $\varphi $ plays the role of a portal particle connecting the Standard Model and the invisible dark sector, the diphoton excess should be correlated with another p…

[Phys. Rev. D 94, 035019] Published Mon Aug 22, 2016

]]>The existence of a 750 GeV di-photon spin-0 resonance $S$ would imply the additional presence of new particles beyond the Standard Model, coupling directly to $S$ and electromagnetically charged. For an $SU(2{)}_{\mathrm{L}}$ singlet $S$, we explore the possibility of probing the $SU(2{)}_{\mathrm{L}}$ and $U(1{)}_{\mathrm{Y}}$ quantum numbers of the n…

[Phys. Rev. D 94, 035020] Published Mon Aug 22, 2016

]]>The thermal evolution of the axial anomaly is investigated in the system of the linear sigma model for $2+1$ flavors. We explore the functional form of the effective potential and the coefficient of the ’t Hooft determinant term. It is found that the latter develops a nontrivial structure as a functio…

[Phys. Rev. D 94, 036005] Published Mon Aug 22, 2016

]]>We consider the $SU(6)$ grand unified theory (GUT) model as an explanation for the diphoton final state excess, where the masses of all associated particles are linked with a new symmetry breaking scale. In this model, the diphoton final states arise due to loops involving three pairs of new vectorlik…

[Phys. Rev. D 94, 036006] Published Mon Aug 22, 2016

]]>We study the magnetic field effect on chiral phase transition in a Nambu–Jona-Lasinio model. In comparison with a mean-field approximation containing only quarks, including mesons as quantum fluctuations in the model leads to a transition from inverse to delayed magnetic catalysis at finite temperat…

[Phys. Rev. D 94, 036007] Published Mon Aug 22, 2016

]]>We demonstrate the importance of including the lensing contribution in galaxy clustering analyses with large galaxy redshift surveys. It is well known that radial cross-correlations between different redshift bins of galaxy surveys are dominated by lensing. But we show here that also neglecting lens…

[Phys. Rev. D 94, 043007] Published Mon Aug 22, 2016

]]>During their propagation through intergalactic space, ultrahigh energy cosmic rays (UHECRs) interact with the background radiation fields. These interactions give rise to energetic electron/positron pairs and photons which in turn feed electromagnetic cascades, contributing to the isotropic gamma-ra…

[Phys. Rev. D 94, 043008] Published Mon Aug 22, 2016

]]>We study dynamics of cosmological models with diffusion effects modeling dark matter and dark energy interactions. We show the simple model with diffusion between the cosmological constant sector and dark matter, where the canonical scaling law of dark matter $({\rho}_{dm,0}{a}^{-3}(t))$ is modified by an additive…

[Phys. Rev. D 94, 043521] Published Mon Aug 22, 2016

]]>Future ground-based cosmic microwave background (CMB) experiments will generate competitive large-scale structure data sets by precisely characterizing CMB secondary anisotropies over a large fraction of the sky. We describe a method for constraining the growth rate of structure to sub-1% precision …

[Phys. Rev. D 94, 043522] Published Mon Aug 22, 2016

]]>Recent blazar observations provide growing evidence for the presence of magnetic fields in the extragalactic regions. While natural speculation is to associate the production with inflationary physics, it is known that magnetogenesis solely from inflation is quite challenging. We therefore study a m…

[Phys. Rev. D 94, 043523] Published Mon Aug 22, 2016

]]>We discuss the near-singularity region of the linear mass Vaidya metric. In particular, we investigate the structure in the numerical solutions for the scattering of scalar and electromagnetic metric perturbations from the singularity. We observe that, around the total evaporation point, quasinormal…

[Phys. Rev. D 94, 044035] Published Mon Aug 22, 2016

]]>Charged rotating Kerr-Newman black holes are known to be superradiantly unstable to perturbations of charged massive bosonic fields whose proper frequencies lie in the bounded regime $0<\omega <\phantom{\rule{0ex}{0ex}}\mathrm{min}\{{\omega}_{\mathrm{c}}\equiv m{\mathrm{\Omega}}_{\mathrm{H}}+q{\mathrm{\Phi}}_{\mathrm{H}},\mu \}$, where $\{{\mathrm{\Omega}}_{\mathrm{H}},{\mathrm{\Phi}}_{\mathrm{H}}\}$ are, respectively, the angular velocity and electric potential of the Kerr…

[Phys. Rev. D 94, 044036] Published Mon Aug 22, 2016

]]>We present an asymptotically flat supersymmetric black lens solution with the horizon topology $L(n,1)={S}^{3}/{\mathbb{Z}}_{n}$ in the five-dimensional minimal ungauged supergravity. We show that the black lens carries a mass, two independent angular momenta, electric charge, and ($n-1$) magnetic fluxes, among which only…

[Phys. Rev. D 94, 044037] Published Mon Aug 22, 2016

]]>We investigate the existence and phenomenology of stable photon orbits (SPOs) in stationary axisymmetric electrovacuum spacetimes in four dimensions. First, we review the classification of equatorial circular photon orbits on Kerr-Newman spacetimes in the charge-spin plane. Second, using a Hamiltoni…

[Phys. Rev. D 94, 044038] Published Mon Aug 22, 2016

]]>This paper deals with the propagation of Klein-Gordon particles in flat background spacetime exhibiting discontinuous metric changes from a Lorentzian signature $(-,+,+,+)$ to a Kleinian signature $(-,+,+,-)$. A formal analogy with the propagation of electrons at a junction between an anisotropic semico…

[Phys. Rev. D 94, 044039] Published Mon Aug 22, 2016

]]>Motivated by recent proposals of possible wormhole existence in galactic halos, we analyze the cosmological evolution of wormhole solutions in modified $f(R)$ gravity. We construct a dynamical wormhole that asymptotically approaches a Friedmann-Lemaître-Robertson-Walker (FLRW) universe, with supportin…

[Phys. Rev. D 94, 044041] Published Mon Aug 22, 2016

]]>A special class of metrics, called universal metrics, solves *all* gravity theories defined by covariant field equations purely based on the metric tensor. Since we currently lack the knowledge of what the full quantum-corrected field equations of gravity are at a given microscopic length scale, these…

[Phys. Rev. D 94, 044042] Published Mon Aug 22, 2016

]]>We examine the time evolution of the frequencies of the gravitational wave after the bounce within the framework of relativistic linear perturbation theory using the results of one-dimensional numerical simulations of core-collapse supernovae. Protoneutron star models are constructed in such a way t…

[Phys. Rev. D 94, 044043] Published Mon Aug 22, 2016

]]>We verify the consistency of the Gödel-type solutions within the four-dimensional Chern-Simons modified gravity with the nondynamical Chern-Simons coefficient for different forms of matter including dust, fluid, scalar field, and electromagnetic field and discuss the related causality issues. We sho…

[Phys. Rev. D 94, 044044] Published Mon Aug 22, 2016

]]>Working in the framework of the Standard Model effective field theory, we study chirality-flipping couplings of the top quark to Higgs and gauge bosons. We discuss in detail the renormalization-group evolution to lower energies and investigate direct and indirect contributions to high- and low-energ…

[Phys. Rev. D 94, 034031] Published Fri Aug 19, 2016

]]>A detailed comparison of HERA data at low Bjorken-$x$ and low four-momentum-transfer squared, ${Q}^{2}$, with predictions based on $\mathrm{ln}{Q}^{2}$ evolution (DGLAP) in perturbative quantum chromodynamics suggests inadequacies of this framework. The standard DGLAP evolution was augmented by including an additional highe…

[Phys. Rev. D 94, 034032] Published Fri Aug 19, 2016

]]>In the context of twin Higgs models, we study a simple mechanism that simultaneously generates asymmetries in the dark and visible sector through the out-of-equilibrium decay of a TeV-scale particle charged under a combination of baryon and twin baryon number. We predict the dark matter to be a 5 Ge…

[Phys. Rev. D 94, 035017] Published Fri Aug 19, 2016

]]>This paper presents the first calculation of the gravitational self-force on a small compact object on an eccentric equatorial orbit around a Kerr black hole to first order in the mass ratio. That is the pointwise correction to the object’s equations of motion (both conservative and dissipative) due…

[Phys. Rev. D 94, 044034] Published Fri Aug 19, 2016

]]>The flatness of the inflaton potential and lightness of the Higgs boson could have the common origin of the breaking of a global symmetry. This scenario provides a unified framework of Goldstone inflation and composite Higgs models, where the inflaton and the Higgs particle both have a pseudo-Goldst…

[Phys. Rev. D 94, 045010] Published Fri Aug 19, 2016

]]>We study a class of $\mathcal{N}=(1,0)$ little string theories obtained from orbifolds of M-brane configurations. These are realized in two different ways that are dual to each other: either as $M$ parallel M5-branes probing a transverse ${A}_{N-1}$ singularity or $N$ M5-branes probing an ${A}_{M-1}$ singularity. These backgroun…

[Phys. Rev. D 94, 046006] Published Fri Aug 19, 2016

]]>We present a measurement of the top quark mass in $p\overline{p}$ collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron collider. The data were collected by the D0 experiment corresponding to an integrated luminosity of $9.7\text{\hspace{0.17em}}\text{\hspace{0.17em}}{\mathrm{fb}}^{-1}$. The matrix element technique is applied to $t\overline{t}$ events in the…

[Phys. Rev. D 94, 032004] Published Thu Aug 18, 2016

]]>We study the Yukawa unification, in particular, the unification of the Yukawa coupling constants of $b$ and $\tau $, in the framework of the supersymmetric (SUSY) model. We concentrate on the model in which the SUSY breaking scalar masses are of the order of the gravitino mass while the gaugino masses origi…

[Phys. Rev. D 94, 035016] Published Thu Aug 18, 2016

]]>In this article, we explore the low energy structure of a $U(3)$ gauge theory over spaces with fuzzy sphere(s) as extra dimensions. In particular, we determine the equivariant parametrization of the gauge fields, which transform either invariantly or as vectors under the combined action of $SU(2)$ rotat…

[Phys. Rev. D 94, 036003] Published Thu Aug 18, 2016

]]>We study the phenomenological implications of the presence of two zeros in a magic neutrino mass matrix. We find that only two such patterns of the neutrino mass matrix are experimentally acceptable. We express all the neutrino observables as functions of one unknown phase $\varphi $ and two known parameters…

[Phys. Rev. D 94, 036004] Published Thu Aug 18, 2016

]]>The spectrum of a relic gravitational wave (RGW) contains high-frequency divergences, which should be removed. We present a systematic study of the issue, based on the exact RGW solution that covers the five stages, from inflation to the acceleration, each being a power law expansion. We show that t…

[Phys. Rev. D 94, 044033] Published Thu Aug 18, 2016

]]>We analyze the present bounds of a scotogenic model, the radiative type III seesaw, in which an additional scalar doublet and at least two fermion triplets of $SU(2{)}_{L}$ are added to the Standard Model. In the radiative type III seesaw, the new physics (NP) sector is odd under an exact global ${\mathbf{Z}}_{2}$ symmetr…

[Phys. Rev. D 94, 033005] Published Wed Aug 17, 2016

]]>In supersymmetric models with radiatively driven naturalness, Higgsino-like electroweak-inos are expected to lie in a mass range 100–300 GeV, the lighter the more natural. Such states can be pair produced at high rates at the International Linear ${e}^{+}{e}^{-}$ Collider where their masses are nearly equal to …

[Phys. Rev. D 94, 035015] Published Wed Aug 17, 2016

]]>The equivalence of the noncommutative U(N) quantum field theories related by the $\theta $-exact Seiberg-Witten maps is, in this paper, proven to all orders in the perturbation theory with respect to the coupling constant. We show that this holds for super Yang-Mills theories with $\mathcal{N}=0$, 1, 2, 4 supersymmetry…

[Phys. Rev. D 94, 041703(R)] Published Wed Aug 17, 2016

]]>Despite all fundamental objections against Newtonian concepts in cosmology, the Friedmann equation derives from these in an astoundingly simple way through application of the shell theorem and conservation of Newtonian energy in an infinite universe. However, Friedmann universes in general possess a…

[Phys. Rev. D 94, 043520] Published Wed Aug 17, 2016

]]>We study Weyl symmetry (local conformal symmetry) in unimodular gravity. It is shown that the Noether currents for both Weyl symmetry and global scale symmetry vanish exactly as in conformally invariant scalar-tensor gravity. We clearly explain why in the class of conformally invariant gravitational…

[Phys. Rev. D 94, 044032] Published Wed Aug 17, 2016

]]>We report on the possibility of reweighting parton-shower Monte Carlo predictions for scale variations in the parton-shower algorithm. The method is based on a generalization of the Sudakov veto algorithm. We demonstrate the feasibility of this approach using example physical distributions. Implemen…

[Phys. Rev. D 94, 034028] Published Mon Aug 15, 2016

]]>Besides the conventional strong and electromagnetic decay modes, the $J/\psi $ particle can also decay via the weak interaction in the standard model. In this paper, nonleptonic $J/\psi \to {D}_{s,d}\pi $, ${D}_{s,d}K$ weak decays, corresponding to the externally emitted virtual $W$ boson process, are investigated with the perturb…

[Phys. Rev. D 94, 034029] Published Mon Aug 15, 2016

]]>We study inelastic meson-meson scattering that is governed by quark-antiquark annihilation and creation involving a quark and an antiquark annihilating into a gluon, and subsequently the gluon creating another quark-antiquark pair. The resultant hadronic reactions include for $I=1$: $\pi \pi \to \rho \rho $, $K\overline{K}\to {K}^{*}{\overline{K}}^{*}$, $\dots $

[Phys. Rev. D 94, 034030] Published Mon Aug 15, 2016

]]>We investigate the temperature dependence of the thermal dilepton rate and the electrical conductivity of the gluon plasma at temperatures of 1.1, 1.3, and $1.5{T}_{c}$ in quenched QCD. Making use of nonperturbatively clover-improved Wilson valence quarks allows for a clean extrapolation of the vector meso…

[Phys. Rev. D 94, 034504] Published Mon Aug 15, 2016

]]>We propose a novel experimental approach to explore exotic spin-dependent interactions using a spin-exchange relaxation-free (SERF) magnetometer, the most sensitive noncryogenic magnetic-field sensor. This approach studies the interactions between optically polarized electron spins located inside a …

[Phys. Rev. D 94, 036002] Published Mon Aug 15, 2016

]]>We report on a comprehensive all-sky search for periodic gravitational waves in the frequency band 100–1500 Hz and with a frequency time derivative in the range of $[-1.18,+1.00]\times 1{0}^{-8}\text{\hspace{0.17em}\hspace{0.17em}}\mathrm{Hz}/\mathrm{s}$. Such a signal could be produced by a nearby spinning and slightly nonaxisymmetric isolated neutron star in our…

[Phys. Rev. D 94, 042002] Published Mon Aug 15, 2016

]]>We perform a detailed study of the weak interactions of standard model neutrinos with the primordial plasma and their effect on the resonant production of sterile neutrino dark matter. Motivated by issues in cosmological structure formation on small scales, and reported x-ray signals that could be d…

[Phys. Rev. D 94, 043515] Published Mon Aug 15, 2016

]]>When comparing constraints on the weakly interacting massive particle (WIMP) properties from direct and indirect detection experiments it is crucial that the assumptions made about the dark matter (DM) distribution are realistic and consistent. For instance, if the Fermi-LAT Galactic center GeV gamm…

[Phys. Rev. D 94, 043516] Published Mon Aug 15, 2016

]]>The inclusion of dissipative effects in cosmic fluids modifies their clustering properties and could have observable effects on the formation of large-scale structures. We analyze the evolution of density perturbations of cold dark matter endowed with causal bulk viscosity. The perturbative analysis…

[Phys. Rev. D 94, 043517] Published Mon Aug 15, 2016

]]>We study a coupled quintessence model with pure momentum exchange and present the effects of such an interaction on the cosmic microwave background (CMB) and matter power spectrum. For a wide range of negative values of the coupling parameter $\beta $ structure growth is suppressed and the model can reconc…

[Phys. Rev. D 94, 043518] Published Mon Aug 15, 2016

]]>CMB lensing probes the growth of the large-scale structure (LSS) of the universe. The authors analytically quantify the effect of non-linearities in the LSS formation on CMB lensing, which leads to a so far neglected bias. With the precision of future experiments (\epmph{Stage-III}, \epmph{Stage-IV}), this bias will significantly shift the measured power spectra and must be accounted for.

[Phys. Rev. D 94, 043519] Published Mon Aug 15, 2016

]]>Inferring astrophysical information from gravitational waves emitted by compact binaries is one of the key science goals of gravitational-wave astronomy. In order to reach the full scientific potential of gravitational-wave experiments, we require techniques to mitigate the cost of Bayesian inferenc…

[Phys. Rev. D 94, 044031] Published Mon Aug 15, 2016

]]>We present a comprehensive study of the determination of the strong coupling from $\tau $ decay, using the most recent release of the experimental ALEPH data. We critically review all theoretical strategies used in previous works and put forward various novel approaches which allow one to study complement…

[Phys. Rev. D 94, 034027] Published Fri Aug 12, 2016

]]>Jarzynski’s theorem is a well-known equality in statistical mechanics, which relates fluctuations in the work performed during a nonequilibrium transformation of a system, to the free-energy difference between two equilibrium ensembles. In this article, we apply Jarzynski’s theorem in lattice gauge …

[Phys. Rev. D 94, 034503] Published Fri Aug 12, 2016

]]>Nonobservation of superpartners of the Standard Model particles at the early runs of the LHC provide strong motivation for introducing an $R$-symmetric minimal supersymmetric Standard Model. This model also comes with a pair of extra scalars which couple only to superpartners at the tree level. We dem…

[Phys. Rev. D 94, 035014] Published Fri Aug 12, 2016

]]>Cosmic microwave background (CMB) experiments, such as WMAP and Planck, measure intensity anisotropies and build maps using a *linearized* formula for relating them to the temperature blackbody fluctuations. However, this procedure also generates a signal in the maps in the form of $y$-type distortions …

[Phys. Rev. D 94, 043006] Published Fri Aug 12, 2016

]]>Using three-dimensional simulations, we study the dynamics and final structure of merging solitonic cores predicted to form in ultralight axion dark matter halos. The classical, Newtonian equations of motion of a self-gravitating scalar field are described by the Schrödinger-Poisson equations. We in…

[Phys. Rev. D 94, 043513] Published Fri Aug 12, 2016

]]>Inflation due to a nonminimally coupled scalar field, as first proposed by Salopek, Bardeen and Bond (SBB), is in good agreement with the observed value of the spectral index and constraints on the tensor-to-scalar ratio. Here we explore the possibility that SBB inflation represents the late stage o…

[Phys. Rev. D 94, 043514] Published Fri Aug 12, 2016

]]>We consider the motion of test particles and light rays in a static cylindrically symmetric conformal spacetime given by Said *et al.* [Phys. Rev. D **85**, 104054 (2012)]. We derive the equations of motion and present their analytical solutions in terms of the Weierstrass $\wp $ function and the Kleinian $\sigma $ fu…

[Phys. Rev. D 94, 044021] Published Fri Aug 12, 2016

]]>Adopting the notation of Teukolsky and Press, we derive the connection relation for asymptotic solutions of the massless Dirac equation on a Kerr background. We show that, unlike bosonic fields, the connection relation for massless Dirac fields (neutrino) provides a rigorous proof of mode stability.…

[Phys. Rev. D 94, 044025] Published Fri Aug 12, 2016

]]>A model of nonlinear electrodynamics coupled with the gravitational field is studied. We obtain the asymptotic black hole solutions at $r\to 0$ and $r\to \infty $. The asymptotic at $r\to 0$ is shown, and we find corrections to the Reissner-Nordström solution and Coulomb’s law at $r\to \infty $. The mass of the black hole is evalu…

[Phys. Rev. D 94, 044026] Published Fri Aug 12, 2016

]]>We present a class of modified-gravity theories which we call ultralocal models. We add a scalar field, with negligible kinetic terms, to the Einstein-Hilbert action. We also introduce a conformal coupling to matter. This gives rise to a new screening mechanism which is not entirely due to the nonli…

[Phys. Rev. D 94, 044027] Published Fri Aug 12, 2016

]]>We consider gauge theories from the free evolution point of view, in which initial data satisfying constraints of a theory are given, and because the constraints satisfy a closed evolution system, they remain so. We study a model constrained Hamiltonian theory and identify a particular structure in …

[Phys. Rev. D 94, 044028] Published Fri Aug 12, 2016

]]>The fraction of the Universe going into primordial black holes (PBHs) with initial mass ${M}_{*}\approx 5\times 1{0}^{14}\text{\hspace{0.17em}}\text{\hspace{0.17em}}\mathrm{g}$, such that they are evaporating at the present epoch, is strongly constrained by observations of both the extragalactic and Galactic $\gamma $-ray backgrounds. However, while the dominant contribution to the…

[Phys. Rev. D 94, 044029] Published Fri Aug 12, 2016

]]>In this paper, a previously developed formalism, where all possible deviations, due to modified gravity from the structure of compact stars in general relativity, have been classified in a parametrized phenomenological form, has been used to deal with the stellar exterior. Several potential astrophysical observables, e.g. the surface redshift, have been computed for future use.

[Phys. Rev. D 94, 044030] Published Fri Aug 12, 2016

]]>We study a proposal for the resolution of the black hole information puzzle within the context of modified versions of quantum theory involving spontaneous reduction of the quantum state. The theories of this kind, which were developed in order to address the so-called *measurement problem* in quantum…

[Phys. Rev. D 94, 045009] Published Fri Aug 12, 2016

]]>[Phys. Rev. D 94, 049905] Published Fri Aug 12, 2016

]]>We compute the perturbative corrections to the heavy quark effective theory sum rules for the matrix element of the $\mathrm{\Delta}B=2$ operator that determines the mass difference of ${B}^{0}$, ${\overline{B}}^{0}$ states. Technically, we obtain analytically the nonfactorizable contributions at order ${\alpha}_{s}$ to the bag parameter that first a…

[Phys. Rev. D 94, 034024] Published Thu Aug 11, 2016

]]>The response of electromagnetic (EM) fields that are produced in noncentral heavy-ion collisions to electromagnetically charged quark gluon plasma can be understood in terms of charge transport and charge diffusion in the hot QCD medium. This article presents a perspective on these processes by inve…

[Phys. Rev. D 94, 034025] Published Thu Aug 11, 2016

]]>Revised formulas for the inclusive cross section of a triple parton scattering process in a hadron collision are suggested based on the modified collinear three-parton distributions. The possible phenomenological issues are discussed.

[Phys. Rev. D 94, 034026] Published Thu Aug 11, 2016

]]>We investigate the parameter space of a model that extends to the next to minimal supersymmetric standard model with the vectorlike particles [Y.-L. Tang, Phys. Rev. D **90**, 075020 (2014)]. We find that the $10+\overline{10}$ model can explain the possible diphoton excess recently revealed by the ATLAS and CMS co…

[Phys. Rev. D 94, 035010] Published Thu Aug 11, 2016

]]>We propose an experiment for measuring the effective Casimir pressure between two parallel silicon carbide (SiC) plates with aligned nuclear spins. The prospective constraints on an axion-neutron coupling constant for both hadronic and grand unified theory (GUT) axions are calculated using the proce…

[Phys. Rev. D 94, 035011] Published Thu Aug 11, 2016

]]>We investigate models involving a vectorlike quark ($X$), which forms a 750 GeV bound state and reproduces the observed diphoton signals at the LHC, in connection with other excesses in the LHC data. An exotic hypercharge of $-4/3$ is required to fit the signal cross section, which indicates that there …

[Phys. Rev. D 94, 035012] Published Thu Aug 11, 2016

]]>An interesting possibility for dark matter is a scalar particle of mass of order 10 MeV–1 GeV, interacting with a $U(1)$ gauge boson (dark photon) which mixes with the photon. We present a simple and natural model realizing this possibility. The dark matter arises as a composite pseudo-Nambu-Goldstone…

[Phys. Rev. D 94, 035013] Published Thu Aug 11, 2016

]]>Using $\mathrm{AdS}/\mathrm{CFT}$ correspondence, we find that a massless quark moving at the speed of light $v=1$, in arbitrary direction, through a strongly coupled $\mathcal{N}=4$ super Yang-Mills (SYM) vacuum at $T=0$, in the presence of strong magnetic field $\mathcal{B}$, loses its energy at a rate linearly dependent on $\mathcal{B}$, i.e., $\frac{dE}{dt}=-\frac{\sqrt{\lambda}}{6\pi}\mathcal{B}$.…

[Phys. Rev. D 94, 041901(R)] Published Thu Aug 11, 2016

]]>The axion is a hypothetical particle considered to be the most economical solution to the strong $CP$ problem. It can also be formulated as a compelling component of dark matter. The haloscope, a leading axion detection scheme, relies on the conversion of galactic halo axions into real photons inside …

[Phys. Rev. D 94, 042001] Published Thu Aug 11, 2016

]]>We develop a mathematical construction of non-Gaussian fields whose bispectra satisfy the single-clock inflation consistency relation. At the same order that our basis for bispectra recovers the two simplest single-clock templates, we also find a third orthogonal template which has the single-clock …

[Phys. Rev. D 94, 043510] Published Thu Aug 11, 2016

]]>We study higher-dimensional scenarios of massive bigravity, which is a very interesting extension of nonlinear massive gravity since its reference metric is assumed to be fully dynamical. In particular, the Einstein field equations along with the following constraint equations for both physical and …

[Phys. Rev. D 94, 044022] Published Thu Aug 11, 2016

]]>We discuss the physical interpretation of stress-energy tensors that source static spherically symmetric Kerr-Schild metrics. We find that the sources of such metrics with no curvature singularities or horizons do not simultaneously satisfy the weak and strong energy conditions. Sensible stress-ener…

[Phys. Rev. D 94, 044023] Published Thu Aug 11, 2016

]]>We consider the finite interactions of the generalized Proca theory including the sixth-order Lagrangian and derive the full linear perturbation equations of motion on the flat Friedmann-Lemaître-Robertson-Walker background in the presence of a matter perfect fluid. By construction, the propagating …

[Phys. Rev. D 94, 044024] Published Thu Aug 11, 2016

]]>We analyze Yukawa unification in the context of ${E}_{8}\times {E}_{8}$ heterotic Calabi-Yau models which rely on breaking to a grand unified theory (GUT) via a nonflat gauge bundle and subsequent Wilson line breaking to the standard model. Our focus is on underlying GUT theories with gauge group $SU(5)$ or $SO(10)$. We …

[Phys. Rev. D 94, 046005] Published Thu Aug 11, 2016

]]>[Phys. Rev. D 94, 049904] Published Thu Aug 11, 2016

]]>We present a treatment of the next-to-leading-order radiative corrections to unpolarized Møller and Bhabha scattering without resorting to ultrarelativistic approximations. We extend existing soft-photon radiative corrections with new hard-photon bremsstrahlung calculations so that the effect of pho…

[Phys. Rev. D 94, 033004] Published Wed Aug 10, 2016

]]>We compute the transport coefficients (drag and momentum diffusion) of the low-lying heavy baryons ${\mathrm{\Lambda}}_{c}$ and ${\mathrm{\Lambda}}_{b}$ in a medium of light mesons formed at the later stages of high-energy heavy-ion collisions. We employ the Fokker-Planck approach to obtain the transport coefficients from unitarized baryon-me…

[Phys. Rev. D 94, 034018] Published Wed Aug 10, 2016

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