Added By: Feedage Forager | |
Language: English | |
Tags: | |
author field mon sep mon phys rev phys published mon published tue published rev published rev sep tue sep | |
Rate this Feed |
Comments (0) |
Feed Details and Statistics |
Published: 2017-09-26T20:03:11+00:00
2017-09-26T10:00:00+00:00
Author(s): Shan Cheng, Alexander Khodjamirian, and Javier VirtoWe complete the set of QCD light-cone sum rules for $B→ππ$ transition form factors, deriving a new sum rule for the timelike-helicity form factor ${F}_{t}$ in terms of dipion distribution amplitudes. This sum rule, in the leading twist-two approximation, is directly related to the pion vector form f...
2017-09-26T10:00:00+00:00
Author(s): Zhi-Yong Zhou and Zhiguang XiaoWe developed a Friedrichs-model-like scheme in studying the hadron resonance phenomenology and present that the hadron resonances might be regarded as the Gamow states produced by a Hamiltonian in which the bare discrete state is described by the result of the usual quark potential model and the int...
2017-09-26T10:00:00+00:00
Author(s): V. Lubicz, L. Riggio, G. Salerno, S. Simula, and C. Tarantino (for the ETM Collaboration)We present a lattice determination of the vector and scalar form factors of the $D→πℓν$ and $D→Kℓν$ semileptonic decays, which are relevant for the extraction of the CKM matrix elements $|{V}_{cd}|$ and $|{V}_{cs}|$ from experimental data. Our analysis is based on the gauge configurations produced b...
2017-09-26T10:00:00+00:00
Author(s): Stephen R. SharpeA relativistic formalism for relating the energies of the states of three scalar particles in finite volume to infinite volume scattering amplitudes has recently been developed. This formalism has been used to predict the energy of the state closest to threshold in an expansion in powers of $1/L$, w...
2017-09-26T10:00:00+00:00
Author(s): James M. Cline and Jorge Martin CamalichRecent anomalies in $B→{K}^{(*)}ℓℓ$ meson decays are consistent with exchange of a heavy ${Z}^{′}$ vector boson. Here we try to connect such new physics to understanding the origin of flavor, by gauging generation number. Phenomenological and theoretical considerations suggest that the smallest viab...
2017-09-26T10:00:00+00:00
Author(s): Diogo Buarque Franzosi and Piero FerrareseThe strong nature of composite Higgs models manifests at high energies through the growing behavior of the scattering amplitudes of longitudinally polarized weak bosons that leads to the formation of composite resonances as well as nonresonant strong effects. In this work the unitarity of these scat...
2017-09-26T10:00:00+00:00
Author(s): Pei-Hong GuWe consider a dark electroweak phase transition, during which a baryon asymmetry in the dark neutrons and an equal lepton asymmetry in the dark Dirac neutrinos can be simultaneously induced by the $CP$-violating reflection of the dark fermions off the expanding dark Higgs bubbles. The Yukawa couplin...
2017-09-26T10:00:00+00:00
Author(s): Werner Rodejohann and Xun-Jie XuThe $μ\text{−}τ$ reflection symmetry $({ν}_{e},{ν}_{μ},{ν}_{τ})→({\overline{ν}}_{e},{\overline{ν}}_{τ},{\overline{ν}}_{μ})$ and the TM1 mixing (a Pontecorvo–Maki–Nakagawa–Sakata matrix with the first column fixed to the tribimaximal form) are both well compatible with experiments. If both approaches...
2017-09-26T10:00:00+00:00
Author(s): Vladimir B. Kopeliovich and Irina K. PotashnikovaThe role of rescaling (expansion or squeezing) of quantized Skyrmions is studied for the spectrum of baryons beginning with nucleon and $\mathrm{Δ}(1232)$ and with flavors strangeness, charm, or beauty. The expansion of Skyrmions due to the centrifugal forces has influence on the masses of baryons w...
2017-09-26T10:00:00+00:00
Author(s): Mark Alexander Randolph Kaltenborn, Niels-Uwe Friedrich Bastian, and David Bernhard BlaschkeA two-phase description of the quark–nuclear matter hybrid equation of state that takes into account the effect of excluded volume in both the hadronic and the quark-matter phases is introduced. The nuclear phase manifests a reduction of the available volume as density increases, leading to a stiffe...
2017-09-26T10:00:00+00:00
Author(s): James Halverson, Cody Long, and Pran NathDynamical mechanisms to generate an ultralight axion of mass $∼{10}^{−21}–{10}^{−22}\text{ }\text{ }\mathrm{eV}$ in supergravity and strings are discussed. An ultralight particle of this mass provides a candidate for dark matter that may play a role for cosmology at scales of 10 kpc or less. An effe...
2017-09-26T10:00:00+00:00
Author(s): J. Choi, H. Themann, M. J. Lee, B. R. Ko, and Y. K. SemertzidisWe first report an axion haloscope search with toroidal geometry. In this pioneering search, we exclude the axion-photon coupling ${g}_{aγγ}$ down to about $5×{10}^{−8}\text{ }\text{ }{\mathrm{GeV}}^{−1}$ over the axion mass range from 24.7 to $29.1\text{ }\text{ }μ\mathrm{eV}$ at a 95% confidence l...
2017-09-26T10:00:00+00:00
Author(s): M. Armano et al. (LISA Pathfinder Collaboration)We report on the performance of the capacitive gap-sensing system of the Gravitational Reference Sensor on board the LISA Pathfinder spacecraft. From in-flight measurements, the system has demonstrated a performance, down to 1 mHz, that is ranging between 0.7 and $1.8\text{ }\text{ }\mathrm{aF}\text...
2017-09-26T10:00:00+00:00
Author(s): Kris Schroven, Eva Hackmann, and Claus LämmerzahlWe describe a new analytical model for the accretion of particles from a rotating and charged spherical shell of dilute collisionless plasma onto a rotating and charged black hole. By assuming a continuous injection of particles at the spherical shell and by treating the black hole and a featureless...
2017-09-26T10:00:00+00:00
Author(s): Wojciech Kulczycki and Edward MalecWe show initial data for gravitational axial waves that are twice differentiable but that are not ${C}^{2}$. They generate wave pulses that interact with matter in the radiation cosmological era. This forces the radiation matter to rotate. This rotation is permanent—it persists after the passage of ...
2017-09-26T10:00:00+00:00
Author(s): Simone Peirone, Matteo Martinelli, Marco Raveri, and Alessandra SilvestriWe investigate the impact of general conditions of theoretical stability and cosmological viability on dynamical dark energy models. As a powerful example, we study whether minimally coupled, single field quintessence models that are safe from ghost instabilities, can source the Chevallier-Polarski-...
2017-09-26T10:00:00+00:00
Author(s): Zahra Altaha Motahar, Jose Luis Blázquez-Salcedo, Burkhard Kleihaus, and Jutta KunzWe consider the effect of scalarization on static and slowly rotating neutron stars for a wide variety of realistic equations of state, including pure nuclear matter, nuclear matter with hyperons, hybrid nuclear and quark matter, and pure quark matter. We analyze the onset of scalarization, presenti...
2017-09-26T10:00:00+00:00
Author(s): Pujian Mao and Jun-Bao WuRecently, the leading soft gluon theorem with single soft emission was shown to be the Ward identity of a two-dimensional $\mathcal{G}$-Kac-Moody symmetry. In this paper, we show that the leading soft gluon theorem can be interpreted as the Ward identity for the asymptotic symmetries of non-Abelian ...
2017-09-26T10:00:00+00:00
Author(s): Aditya Aravind, Minglei Xiao, and Jiang-Hao YuThe beta functions for various coupling coefficients in the Lagrangian (Appendix A in the paper) have been corrected and the updated version of the plots in the paper have been included. The conclusions of the paper remain the same.
2017-09-25T10:00:00+00:00
Author(s): M. Ablikim et al. (BESIII Collaboration)Using a data sample of $448×{10}^{6}\text{ }\text{ }ψ(3686)$ events collected with the BESIII detector operating at the BEPCII storage ring, the decays $ψ(3686)→γη$ and $ψ(3686)→γ{π}^{0}$ are observed with a statistical significance of $7.3σ$ and $6.7σ$, respectively. The branching fractions are mea...
2017-09-25T10:00:00+00:00
Author(s): S. Sakai, L. Roca, and E. OsetWe evaluate the $s$-wave interaction of pseudoscalar and vector mesons with both charm and beauty to investigate the possible existence of molecular $BD$, ${B}^{*}D$, $B{D}^{*}$, ${B}^{*}{D}^{*}$, $B\overline{D}$, ${B}^{*}\overline{D}$, $B{\overline{D}}^{*}$, or ${B}^{*}{\overline{D}}^{*}$ meson sta...
2017-09-25T10:00:00+00:00
Author(s): Thomas Gutsche, Serguei Kuleshov, Valery E. Lyubovitskij, and Igor T. ObukhovskyWe suggest a description of the beam asymmetry in $p\overline{p}$ and $\mathrm{Λ}\overline{\mathrm{Λ}}$ photoproduction off the proton $\stackrel{→}{γ}+p→p\overline{p}+p$ and $\stackrel{→}{γ}+p→\mathrm{Λ}\overline{\mathrm{Λ}}+p$, which takes into account the contribution of the scalar mesons ${f}_{0...
2017-09-25T10:00:00+00:00
Author(s): Youngman Kim, Bum-Hoon Lee, D. G. Pak, Chanyong Park, and Takuya TsukiokaThe problem of the existence of a stable vacuum field in pure QCD is revised. Our approach is based on using classical stationary nonlinear wave type solutions with an intrinsic mass scale parameter. Such solutions can be treated as quantum-mechanical wave functions describing massive spinless state...
2017-09-25T10:00:00+00:00
Author(s): Daniele Binosi, Cédric Mezrag, Joannis Papavassiliou, Craig D. Roberts, and Jose Rodríguez-QuinteroWe unify two widely different approaches to understanding the infrared behavior of quantum chromodynamics (QCD), one essentially phenomenological, based on data, and the other computational, realized via quantum field equations in the continuum theory. Using the latter, we explain and calculate a pr...
2017-09-25T10:00:00+00:00
Author(s): Maarten Golterman, Kim Maltman, and Santiago PerisExperimental data from hadronic $τ$ decays allow for a precision determination of the slope of the $I=1$ vacuum polarization at zero momentum. We use this information to provide a value for the next-to-next-to-leading order (NNLO) low-energy constant ${C}_{93}$ in chiral perturbation theory. The lar...
2017-09-25T10:00:00+00:00
Author(s): Fabian Goerke, Thomas Gutsche, Mikhail A. Ivanov, Jürgen G. Körner, and Valery E. LyubovitskijWe present a calculation of the strong decays of the exotic states ${Z}_{b}(10610)$ and ${Z}_{b}^{′}(10650)$ using a covariant quark model. We use a molecular-type four-quark current for the coupling of the ${Z}_{b}(10610)$ and ${Z}_{b}^{′}(10650)$ to the constituent heavy and light quarks.
2017-09-25T10:00:00+00:00
Author(s): M. Quandt and H. ReinhardtThe thermodynamics of $SU(2)$ Yang-Mills theory in the covariant variational approach is studied by relating the free action density in the background of a nontrivial Polyakov loop to the pressure of the gluon plasma. The Poisson resummed expression for the pressure can be evaluated analytically in ...
2017-09-25T10:00:00+00:00
Author(s): Baiyang Zhang, Andrey Radzhabov, Nikolai Kochelev, and Pengming ZhangWe calculate the electromagnetic Pauli form factor of quark induced by the nontrivial topological fluctuations of QCD vacuum called instantons. It is shown that such a contribution is significant. We discuss the possible implications of our result in the photon-hadron reactions and in the dynamics o...
2017-09-25T10:00:00+00:00
Author(s): Evan Berkowitz, Chris Bouchard, Chia Cheng Chang (張家丞), M. A. Clark, Bálint Joó, Thorsten Kurth, Christopher Monahan, Amy Nicholson, Kostas Orginos, Enrico Rinaldi, Pavlos Vranas, and André Walker-LoudWe report on salient features of a mixed lattice QCD action using valence Möbius domain-wall fermions solved on the dynamical ${N}_{f}=2+1+1$ highly improved staggered quark sea-quark ensembles generated by the MILC Collaboration. The approximate chiral symmetry properties of the valence fermions ar...
2017-09-25T10:00:00+00:00
Author(s): Sara Diglio, Lorenzo Feligioni, and Gilbert MoultakaWhile the presence of a light stop is increasingly disfavored by the experimental limits set on R-parity conserving scenarios, the naturalness of supersymmetry could still be safely concealed in the more challenging final states predicted by the existence of non-null R-parity violating couplings. Al...
2017-09-25T10:00:00+00:00
Author(s): Jihn E. KimChiral representations are the key to obtaining light fermions from some ultraviolet completed theories. The well-known chiral example is one family set of 15 chiral fields in the standard model. We find a new chiral theory ${\mathrm{SU}(2)}_{\mathrm{dark}}×\mathrm{U}(1{)}_{Q}$ with 16 chiral fields...
2017-09-25T10:00:00+00:00
Author(s): D. M. Ghilencea, Z. Lalak, and P. OlszewskiWe explore the possibility that scale symmetry is a quantum symmetry that is broken only spontaneously and apply this idea to the standard model. We compute the quantum corrections to the potential of the Higgs field ($ϕ$) in the classically scale-invariant version of the standard model (${m}_{ϕ}=0$...
2017-09-25T10:00:00+00:00
Author(s): Martin B. Einhorn and D. R. Timothy JonesWe calculate the $β$-functions for $SO(N)$ and $SU(N)$ gauge theories coupled to adjoint and fundamental scalar representations, correcting longstanding, previous results. We explore the constraints on $N$ resulting from requiring asymptotic freedom for all couplings. When we take into account the a...
2017-09-25T10:00:00+00:00
Author(s): G. Fejős and T. HatsudaFlows of the couplings of a theory of an $N$-component (complex) scalar field coupled to electrodynamics are investigated using the functional renormalization group formalism in $d$ dimensions in covariant gauges. We find charged fixed points for any number of components in $d=3$, in accordance with...
2017-09-25T10:00:00+00:00
Author(s): Mohammad H. AlhakamiWe consider the effective field theory (EFT) treatment of two-body systems with narrow resonances. Within this approach, an $s$-wave scattering amplitude can be expanded in powers of a typical momentum scale of a system $Q≪\mathrm{Λ}$, where $\mathrm{Λ}$ represents a hard scale of a scattering syste...
2017-09-25T10:00:00+00:00
Author(s): Mariana Carrillo González, Ali Masoumi, Adam R. Solomon, and Mark TroddenTunneling is a fascinating aspect of quantum mechanics that renders the local minima of a potential meta-stable, with important consequences for particle physics, for the early hot stage of the universe, and more speculatively, for the behavior of the putative multiverse. While this phenomenon has b...
2017-09-25T10:00:00+00:00
Author(s): Dennis D. Dietrich and Adrian KoenigsteinWe analyze the worldline holographic framework for fermions. Worldline holography is based on the observation that in the worldline approach to quantum field theory, sources of a quantum field theory over ${\mathrm{Mink}}_{4}$ naturally form a field theory over ${\mathrm{AdS}}_{5}$ to all orders in ...
2017-09-25T10:00:00+00:00
Author(s): Li Yang and Xin-Jian WenTo reflect the asymptotic freedom in the thermal direction, a temperature-dependent coupling was proposed in the literature. We investigate its effect on QCD matter with and without strong magnetic fields. Compared with the fixed coupling constant, the running coupling leads to a drastic change in t...
2017-09-25T10:00:00+00:00
Author(s): Joan Camps, Shahar Hadar, and Nicholas S. MantonThe low-energy dynamics of any system admitting a continuum of static configurations is approximated by slow motion in moduli (configuration) space. Here, following Ferrell and Eardley, this moduli space approximation is utilized to study collisions of two maximally charged Reissner-Nordström black ...
2017-09-25T10:00:00+00:00
Author(s): T. S. Kosmas, D. K. Papoulias, M. Tórtola, and J. W. F. ValleWe investigate the impact of a fourth sterile neutrino at reactor and Spallation Neutron Source neutrino detectors. Specifically, we explore the discovery potential of the TEXONO and COHERENT experiments to subleading sterile neutrino effects through the measurement of the coherent elastic neutrino-...
2017-09-25T10:00:00+00:00
Author(s): Kohei Inayoshi, Nicola Tamanini, Chiara Caprini, and Zoltán HaimanMultifrequency gravitational wave (GW) observations are useful probes of the formation processes of coalescing stellar-mass binary black holes (BBHs). We discuss the phase drift in the GW inspiral waveform of the merging BBH caused by its center-of-mass acceleration. The acceleration strongly depend...
2017-09-25T10:00:00+00:00
Author(s): Alma X. González-Morales, Stefano Profumo, and Javier Reynoso-CordovaThe self-annihilation of dark matter particles with mass in the MeV range can produce gamma rays via prompt or secondary radiation. The annihilation rate for such light dark matter particles is however tightly constrained by cosmic microwave background (CMB) data. Here we explore the possibility of ...
2017-09-25T10:00:00+00:00
Author(s): Jinn-Ouk Gong and Naoya KitajimaWe show that the stochastic evolution of an interacting system of the Higgs field and a spectator scalar field naturally gives rise to an enhanced probability of settling down at the electroweak vacuum at the end of inflation. Subsequent destabilization due to parametric resonance between the Higgs ...
2017-09-25T10:00:00+00:00
Author(s): Ui-Han Zhang and Tzihong ChiuehSubhorizon perturbations under the extreme initial condition of the axion model are investigated, where initial axion angles start near the potential maximum and the mass oscillation is substantially delayed. This work focuses on a few new features found in the extreme axion model but absent in the ...
2017-09-25T10:00:00+00:00
Author(s): Richard A. Battye, Francesco Pace, and Damien TrinhWe investigate the evolution of cosmological perturbations in models of dark energy described by a timelike unit normalized vector field specified by a general function $\mathcal{F}(\mathcal{K})$, so-called generalized Einstein-Aether models. First we study the background dynamics of such models via...
2017-09-25T10:00:00+00:00
Author(s): L.-P. Euvé and G. RousseauxThe classical theory of space-time, namely general relativity, suggests but does not demonstrate the existence of so-called wormholes allowing for interstellar journeys. Alternative proposals such as quantum gravity theories are developed nowadays to allow for wormhole travels by assuming hypothetic...
2017-09-25T10:00:00+00:00
Author(s): J. Podolský, R. Švarc, R. Steinbauer, and C. SämannWe generalize the classical junction conditions for constructing impulsive gravitational waves by the Penrose “cut and paste” method. Specifically, we study nonexpanding impulses which propagate in spaces of constant curvature with any value of the cosmological constant (that is, Minkowski, de Sitte...
2017-09-25T10:00:00+00:00
Author(s): Soham Bhattacharyya and S. ShankaranarayananQuasinormal modes (QNMs) or the ringdown phase of gravitational waves provide critical information about the structure of compact objects like black holes. Thus, QNMs can be a tool to test general relativity (GR) and possible deviations from it. In the case of GR, it has been known for a long time t...
2017-09-25T10:00:00+00:00
Author(s): Andrea Maselli, Sebastian H. Völkel, and Kostas D. KokkotasRelativistic ultracompact objects without an event horizon may be able to form in nature and merge as binary systems, mimicking the coalescence of ordinary black holes. The postmerger phase of such processes presents characteristic signatures, which appear as repeated pulses within the emitted gravi...
2017-09-25T10:00:00+00:00
Author(s): Taishi Ikeda, Chul-Moon Yoo, and Vitor CardosoThe dynamical evolution of self-interacting scalars is of paramount importance in cosmological settings and can teach us about the content of Einstein’s equations. In flat space, nonlinear scalar field theories can give rise to localized, nonsingular, time-dependent, long-lived solutions called “osc...
2017-09-25T10:00:00+00:00
Author(s): Ruifeng Dong, Jeremy Sakstein, and Dejan StojkovicWe study the quasinormal modes of asymptotically anti–de Sitter black holes in a class of shift-symmetric Horndeski theories where a gravitational scalar is derivatively coupled to the Einstein tensor. The spacetime differs from exact Schwarzschild–anti–de Sitter, resulting in a different effective ...
2017-09-25T10:00:00+00:00
Author(s): Daiqin Su, C. T. Marco Ho, Robert B. Mann, and Timothy C. RalphWe show that the gravitational quasinormal modes (QNMs) of a Schwarzschild black hole play the role of a multimode squeezer that can generate particles. For a minimally coupled scalar field, the QNMs “squeeze” the initial state of the scalar field (even for the vacuum) and produce scalar particles. ...
2017-09-25T10:00:00+00:00
Author(s): Mehdi Ahmadi, Ya-Dong Wu, and Barry C. SandersIn quantum secret sharing protocols, the usual presumption is that the distribution of quantum shares and players’ collaboration are both performed inertially. Here we develop a quantum secret sharing protocol that relaxes these assumptions wherein we consider the effects due to the accelerating mot...
2017-09-25T10:00:00+00:00
Author(s): Lei Jiusi and V. P. NairWe consider actions for particles and strings, including twistorial descriptions on 4D Minkowski and ${\mathrm{AdS}}_{5}$ spacetimes from the point of view of coadjoint orbits for the isometry group. We also consider the collective coordinate dynamics of singular solutions in Chern-Simons (CS) theor...
2017-09-25T10:00:00+00:00
Author(s): Benjamin Knorr and Stefan LippoldtWe investigate gravitational correlation functions in a curved background with the help of nonperturbative renormalization group methods. Beta functions for eleven couplings are derived, two of which correspond to running gauge parameters. A unique ultraviolet fixed point is found, suitable for a U...
2017-09-25T10:00:00+00:00
Author(s): J. F. Assunção, T. Mariz, J. R. Nascimento, and A. Yu. PetrovWe study spontaneous Lorentz symmetry breaking for a four-dimensional massless four-fermion model. Our methodology is based on use of the rationalized propagator. We show that a bumblebee potential arises as a result of one-loop calculations and displays nontrivial minima. Also, we demonstrate that ...
2017-09-25T10:00:00+00:00
Author(s): Sabrina Pasterski and Shu-Heng ShaoWe study solutions of the Klein-Gordon, Maxwell, and linearized Einstein equations in ${\mathbb{R}}^{1,d+1}$ that transform as $d$-dimensional conformal primaries under the Lorentz group $SO(1,d+1)$. Such solutions, called conformal primary wavefunctions, are labeled by a conformal dimension $\mathr...
2017-09-25T10:00:00+00:00
Author(s): Nabamita Banerjee, Ivano Lodato, and Turmoli NeogiWe consider three dimensional $N=4$ flat supergravity, with an Abelian R-symmetry enhancing the gravitational phase space. We obtain the field configuration whose asymptotic symmetries at null infinity coincide with the centrally extended $N=4$ super-Bondi-Metzner-Sachs (BMS) algebra. The killing sp...
2017-09-25T10:00:00+00:00
Author(s): Tadashi OkazakiIn conformal quantum mechanics with the vacuum of a real scaling dimension and with a complete orthonormal set of energy eigenstates, which is preferable under the unitary evolution, the dilatation expectation value between energy eigenstates monotonically decreases along the flow from the UV to the...
2017-09-22T10:00:00+00:00
Author(s): B. Pal et al. (Belle Collaboration)We have searched for the Cabibbo-suppressed decay ${\mathrm{Λ}}_{c}^{+}→ϕp{π}^{0}$ in ${e}^{+}{e}^{−}$ collisions using a data sample corresponding to an integrated luminosity of $915\text{ }\text{ }{\mathrm{fb}}^{−1}$. The data were collected by the Belle experiment at the KEKB ${e}^{+}{e}^{−}$ asy...
2017-09-22T10:00:00+00:00
Author(s): G. RamalhoWe present analytic parametrizations for the ${γ}^{*}N→N(1440)$ form factors derived from light-front holography in leading twist approximation. The new parametrizations describe the electromagnetic form factors using analytic functions dependent on the masses of the $ρ$ meson and respective radial ...
2017-09-22T10:00:00+00:00
Author(s): M. A. L. Capri, D. Fiorentini, A. D. Pereira, and S. P. SorellaThe refined Gribov-Zwanziger framework takes into account the existence of equivalent gauge field configurations in the gauge-fixing quantization procedure of Euclidean Yang-Mills theories. Recently, this setup was extended to the family of linear covariant gauges giving rise to a local and Becchi-R...
2017-09-22T10:00:00+00:00
Author(s): I. F. Ginzburg and M. KrawczykWe find a set of necessary and sufficient conditions for the $CP$ conservation in the most general 2HDM in terms of observable quantities. This set contains two simple and relatively easily testable conditions instead of the more complex conditions usually discussed.
2017-09-22T10:00:00+00:00
Author(s): Sourabh Dube, Divya Gadkari, and Arun M. ThalapillilSterile neutrinos, if they exist, are potential harbingers for physics beyond the Standard Model. They have the capacity to shed light on our flavor sector, grand unification frameworks, dark matter sector and origins of baryon antibaryon asymmetry. There have been a few seminal studies that have br...
2017-09-22T10:00:00+00:00
Author(s): Q. Z. Lv and Heiko BaukeThe simultaneous creation of multiple electron-positron pairs by localized strong electric fields is studied by utilizing a time- and space-resolved quantum field theory approach. It is demonstrated that the number of simultaneously created pairs equals the number of the potential’s supercritical qu...
2017-09-22T10:00:00+00:00
Author(s): Ram Brustein, A. J. M. Medved, and K. YagiThe merger of colliding black holes (BHs) should lead to the production of ringdown or quasinormal modes (QNMs), which may very well be sensitive to the state of the interior. We put this idea to the test with a recent proposal that the interior of a BH consists of a bound state of highly excited, l...
2017-09-22T10:00:00+00:00
Author(s): Júnior D. Toniato, Davi C. Rodrigues, Álefe O. F. de Almeida, and Nicolas BertiniWe apply the full Will-Nordtvedt version of the parametrized post-Newtonian (PPN) formalism to a class of general relativity extensions that are based on nontrivial renormalization group (RG) effects at large scales. We focus on a class of models in which the gravitational coupling constant $G$ is c...
2017-09-22T10:00:00+00:00
Author(s): David Anderson and Nicolás YunesScalar-tensor theories of gravity modify general relativity by introducing a scalar field that couples nonminimally to the metric tensor, while satisfying the weak-equivalence principle. These theories are interesting because they have the potential to simultaneously suppress modifications to Einste...
2017-09-22T10:00:00+00:00
Author(s): Roman Plyatsko, Mykola Fenyk, and Volodymyr PanatThe effects of highly relativistic spin-gravity coupling in the Schwarzschild–de Sitter background that follow from the Mathisson-Papapetrou equations are investigated. The dependence of gravitoelectric and gravitomagnetic components of gravitational field on the velocity of an observer that is movi...
2017-09-22T10:00:00+00:00
Author(s): Ke Yang, Yu-Xiao Liu, Bin Guo, and Xiao-Long DuWe consider the scalar perturbations of Eddington-inspired Born-Infeld braneworld models in this paper. The dynamical equation for the physical propagating degree of freedom $ξ({x}^{μ},y)$ is achieved by using the Arnowitt-Deser-Misner decomposition method: ${F}_{1}(y){∂}_{y}^{2}ξ+{F}_{2}(y){∂}_{y}ξ...
2017-09-22T10:00:00+00:00
Author(s): Thibaut Arnoulx de Pirey Saint Alby and Nicolás YunesThe scalar-tensor theory of Damour and Esposito-Farèse recently gained some renewed interest because of its ability to suppress modifications to general relativity in the weak field, while introducing large corrections in the strong field of compact objects through a process called scalarization. A ...
2017-09-22T10:00:00+00:00
Author(s): Noburo ShibaWe consider the Aharonov-Bohm effect on entanglement entropy for one interval in ($1+1$) dimensional conformal field theory on a one dimensional ring. The magnetic field is confined inside the ring, i.e., there is a Wilson loop on the ring. The Aharonov-Bohm phase factor which is proportional to the...
2017-09-22T10:00:00+00:00
Author(s): Jibril Ben Achour and Etera R. LivineIn the context of loop quantum gravity (LQG), we study the fate of Thiemann complexifier in homogeneous and isotropic Friedmann-Lemaitre-Roberston-Walker (FLRW) cosmology. The complexifier is the dilatation operator acting on the canonical phase space for gravity and generates the canonical transfor...
2017-09-21T10:00:00+00:00
Author(s): Philip Ilten, Nicholas L. Rodd, Jesse Thaler, and Mike WilliamsWe propose two new analysis strategies for studying charm and beauty quarks at colliders. The first strategy is aimed at testing the kinematics of heavy-flavor quarks within an identified jet. Here, we use the SoftDrop jet-declustering algorithm to identify two subjets within a large-radius jet, usi...
2017-09-21T10:00:00+00:00
Author(s): Wen-Chen Chang, Randall Evan McClellan, Jen-Chieh Peng, and Oleg TeryaevHigh precision data of lepton angular distributions for ${γ}^{*}/Z$ production in $pp$ collisions at the LHC, covering broad ranges of dilepton transverse momenta (${q}_{T}$) and rapidity ($y$), were recently reported. Strong ${q}_{T}$ dependencies were observed for several angular distribution coef...
2017-09-21T10:00:00+00:00
Author(s): Nabil Baouche and Amine AhricheIn this work, we consider the process ${e}^{+}+{e}^{−}→b\overline{b}+{\overline{)E}}_{T}$, at the future electron-positron colliders such as the International Linear Collider and Compact Linear Collider, to look for the dark matter (DM) effect and identify its nature at two different center-of-mass ...
2017-09-21T10:00:00+00:00
Author(s): Damir Bečirević, Alain Le Yaouanc, and Luis OliverSemileptonic transitions $\overline{B}→{D}^{(n)}ℓ\overline{ν}$, where ${D}^{(n)}(n≠0)$ is a radially excited meson, have recently attracted much attention as a way to understand some puzzles between theory and data. In the heavy quark limit the inelastic Isgur-Wise function vanishes at zero recoil, ...
2017-09-21T10:00:00+00:00
Author(s): Mehdi Rezaei and Mohammad MalekjaniUnder the commonly used spherical collapse model, we study how dark energy affects the growth of large scale structures of the Universe in the context of agegraphic dark energy models. The dynamics of the spherical collapse of dark matter halos in nonlinear regimes is determined by the properties of...
2017-09-21T10:00:00+00:00
Author(s): Arthur George Suvorov and Andrew MelatosSome exact, nonlinear, vacuum gravitational wave solutions are derived for certain polynomial $f(R)$ gravities. We show that the boundaries of the gravitational domain of dependence, associated with events in polynomial $f(R)$ gravity, are not null as they are in general relativity. The implication ...
2017-09-21T10:00:00+00:00
Author(s): Quentin G. Bailey and Daniel HavertHigher mass dimension terms in an effective field theory framework for tests of spacetime symmetries are studied. Using a post-Newtonian expansion method, we derive the spacetime metric and the equations of motion for a binary system. This reveals an effective inverse cubic force correction to post-...
2017-09-21T10:00:00+00:00
Author(s): Alexandros Karam, Thomas Pappas, and Kyriakos TamvakisIn the context of scalar-tensor theories of gravity we compute the third-order corrected spectral indices in the slow-roll approximation. The calculation is carried out by employing the Green’s function method for scalar and tensor perturbations in both the Einstein and Jordan frames. Then, using th...
2017-09-21T10:00:00+00:00
Author(s): J. A. GraceyThe critical exponent $ω$ is evaluated at $O(1/N)$ in $d$ dimensions in the Gross-Neveu model using the large $N$ critical point formalism. It is shown to be in agreement with the recently determined three-loop $β$-functions of the Gross-Neveu-Yukawa model in four dimensions. The same exponent is co...
2017-09-21T10:00:00+00:00
Author(s): George K. Leontaris and Qaisar ShafiWe explore the low-energy phenomenology of an F-theory-based $SU(5)$ model which, in addition to the known quarks and leptons, contains Standard Model (SM) singlets and vectorlike color triplets and $SU(2)$ doublets. Depending on their masses and couplings, some of these new particles may be observe...
2017-09-21T10:00:00+00:00
Author(s): Steven S. Gubser and Sarthak ParikhGeodesic bulk diagrams were recently shown to be the geometric objects which compute global conformal blocks. We show that this duality continues to hold in $p$-adic $\mathrm{AdS}/\mathrm{CFT}$, where the bulk is replaced by the Bruhat–Tits tree, an infinite regular graph with no cycles, and the bou...
2017-09-21T10:00:00+00:00
Author(s): A. V. BelitskyTwist fields emerge in a number of physical applications ranging from entanglement entropy to scattering amplitudes in four-dimensional gauge theories. In this work, their vacuum expectation values are studied in the path integral framework. By performing a gauge transformation, their correlation fu...
2017-09-21T10:00:00+00:00
Author(s): Giacomo RosatiDefining a new $r$-matrix compatible with the scalar product at the basis of the Chern-Simons action for a particle coupled to ($2+1$) Lorentzian gravity with cosmological constant, I show how deformed symmetries of $κ$-de Sitter and, in the vanishing cosmological limit, of $κ$-Poincaré kind, arise ...
2017-09-21T10:00:00+00:00
Author(s): Andy O’Bannon, Jonas Probst, Ronnie Rodgers, and Christoph F. UhlemannFor a perturbation of the state of a conformal field theory (CFT), the response of the entanglement entropy is governed by the so-called “first law” of entanglement entropy, in which the change in entanglement entropy is proportional to the change in energy. Whether such a first law holds for other ...
2017-09-20T10:00:00+00:00
Author(s): Hong-Wei Ke and Xue-Qian LiIn this work, we investigate decays of ${B}_{s}→{η}_{c}ϕ$ and ${B}_{s}→{η}_{c}{f}_{0}(980)$ in a theoretical framework. The calculation is based on the postulation that ${f}_{0}(980)$ and ${f}_{0}(500)$ are mixtures of pure quark states $\frac{1}{\sqrt{2}}(\overline{u}u+\overline{d}d)$ and $\overlin...
2017-09-20T10:00:00+00:00
Author(s): Marta Łuszczak, Rafał Maciuła, Antoni Szczurek, and Izabela BabiarzWe discuss single-diffractive production of dijets. The cross section is calculated within the resolved Pomeron picture, for the first time in the ${k}_{t}$-factorization approach, neglecting transverse momentum of the Pomeron. We use Kimber-Martin-Ryskin unintegrated parton (gluon, quark, antiquark...
2017-09-20T10:00:00+00:00
Author(s): M. B. Gay Ducati and S. MartinsThe exclusive photoproduction of the heavy vector mesons $J/\mathrm{Ψ}$ is investigated in the context of peripheral lead-lead collisions for the energies available at the LHC, $\sqrt{s}=2.76\text{ }\text{ }\mathrm{TeV}$ and $\sqrt{s}=5.02\text{ }\text{ }\mathrm{TeV}$. Using the light-cone color dip...
2017-09-20T10:00:00+00:00
Author(s): Richard F. Lebed and Eric S. SwansonThe mass splitting between the quarkonium spin-singlet state $h$ (${J}^{PC}={1}^{+−}$) and the spin average of the quarkonium spin-triplet states $χ$ (${J}^{PC}={0}^{++},{1}^{++},{2}^{++}$) is seen to be astonishingly small, not only in the charmonium and bottomonium cases where the relevant masses ...
2017-09-20T10:00:00+00:00
Author(s): Riccardo Catena and Chris KouvarisWe study the properties and direct detection prospects of an as of yet neglected population of dark matter (DM) particles moving in orbits gravitationally bound to the Earth. This DM population is expected to form via scattering by nuclei in the Earth’s interior. We compute fluxes and nuclear recoil...
2017-09-20T10:00:00+00:00
Author(s): I. E. Cunha, N. L. Holanda, and F. ToppanIn this paper, we quantize superconformal $σ$ models defined by worldline supermultiplets. Two types of superconformal mechanics, with and without a De Alfaro Fubini Furlan (DFF) term, are considered. Without a DFF term (Calogero potential only), the supersymmetry is unbroken. The models with a DFF ...
2017-09-20T10:00:00+00:00
Author(s): Radu TatarWe consider $\mathcal{N}=2$ four dimensional field theories compactified on a two torus in the presence of a $U(1)$ magnetic field. We discuss the restrictions leading to theories with (2,2) supersymmetry or (0,2) supersymmetry in two dimensions. The field theories live on D5 branes wrapped on four ...
2017-09-19T10:00:00+00:00
Author(s): B. Adeva et al. (DIRAC Collaboration)After having announced the statistically significant observation ($5.6σ$) of the new exotic $πK$ atom, the DIRAC experiment at the CERN proton synchrotron presents the measurement of the corresponding atom lifetime, based on the full $πK$ data sample: $τ=(5.{5}_{−2.8}^{+5.0})×{10}^{−15}\text{ }\text...
2017-09-19T10:00:00+00:00
Author(s): F. G. Ben, M. V. T. Machado, and W. K. SauterWe provide a universal expression of cross sections for the exclusive vector meson production and deeply virtual Compton scattering (DVCS) in photon-proton and photon-nucleus interactions based on the geometric scaling phenomenon. The theoretical parametrization based on the scaling property depends...
2017-09-19T10:00:00+00:00
Author(s): Yi-Lei Tang and Shou-hua ZhuIn this paper, we combine the $ν$-two-Higgs-doublet-model with the inverse seesaw mechanisms. In this model, the Yukawa couplings involving the sterile neutrinos and the exotic Higgs bosons can be of order 1 in the case of a large $\mathrm{tan}β$. We calculated the corrections to the $Z$-resonance p...
2017-09-19T10:00:00+00:00
Author(s): Jingke Xu, Chris Stanford, Shawn Westerdale, Frank Calaprice, Alexander Wright, and Zhiming ShiOne major background in direct searches for weakly interacting massive particles (WIMPs) comes from the deposition of radon progeny on detector surfaces. A dangerous surface background is the $^{206}\mathrm{Pb}$ nuclear recoils produced by $^{210}\mathrm{Po}$ decays. In this paper, we report the fir...
2017-09-19T10:00:00+00:00
Author(s): Francesco Maione, Roberto De Pietri, Alessandra Feo, and Frank LöfflerIn this work we analyze the gravitational wave signal from hypermassive neutron stars formed after the merger of binary neutron star systems, focusing on its spectral features. The gravitational wave signals are extracted from numerical relativity simulations of models already considered by De Pietr...
2017-09-19T10:00:00+00:00
Author(s): Bobir Toshmatov, Cosimo Bambi, Bobomurat Ahmedov, Zdeněk Stuchlík, and Jan ScheeWe study scalar and electromagnetic perturbations of a family of nonsingular nonrotating black hole spacetimes that are solutions in a large class of conformally invariant theories of gravity. The effective potential for scalar perturbations depends on the exact form of the scaling factor. Electroma...