Latest in hep-ph

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BFKL Pomeron and the survival factorFeb 21 2019We consider the absorptive corrections and the rapidity gap survival factor which are necessary to provide the unitarization of the BFKL Pomeron. In particular we discuss the role of the enhanced screening diagrams.
The strong running coupling from the gauge sector of Domain Wall lattice QCD with physical quark massesFeb 21 2019We report on the first computation of the strong running coupling at the physical point (physical pion mass) from the ghost-gluon vertex, computed from lattice simulations with three flavors of Domain Wall fermions. We find $\alpha_{\overline{\rm MS}}(m_Z^2)=0.1172(11)$, ... More
Exclusive vector meson production in heavy ion collisionsFeb 21 2019We discuss the salient features of exclusive vector meson production in heavy ion collisions at LHC energies. Special attention is paid to the space-time picture of the process. We account for both coherent and incoherent contributions. The explicit quantitative ... More
Report on Tests and Measurements of Hadronic Interaction Properties with Air ShowersFeb 21 2019We present a summary of recent tests and measurements of hadronic interaction properties with air showers. This report has a special focus on muon density measurements. Several experiments reported deviations between simulated and recorded muon densities ... More
Conformal geometry and (super)conformal higher-spin gauge theoriesFeb 21 2019We develop a manifestly conformal approach to describe linearised (super)conformal higher-spin gauge theories in arbitrary conformally flat backgrounds in three and four spacetime dimensions. Closed-form expressions in terms of gauge prepotentials are ... More
Low $x$ physics as an infinite twist (G)TMD framework: unravelling the origins of saturationFeb 21 2019We show how the formulations of low $x$ physics involving Wilson line operators can be fully rewritten into an infinite twist TMD or GTMD framework, respectively for inclusive and exclusive observables. This leads to a perfect match between low $x$ physics ... More
Probing the Neutrino Mass Ordering with Atmospheric Neutrinos from Three Years of IceCube DeepCore DataFeb 20 2019The Neutrino Mass Ordering (NMO) remains one of the outstanding questions in the field of neutrino physics. One strategy to measure the NMO is to observe matter effects in the oscillation pattern of atmospheric neutrinos above $\sim 1\,\mathrm{GeV}$, ... More
Cosmological Magnetic Field and Dark Energy as two sides of the same coinFeb 20 2019It has been recently argued \cite{Barvinsky:2017lfl} that the de Sitter phase in cosmology might be naturally generated as a result of dynamics of the topologically nontrivial sectors in a strongly coupled QCD-like gauge theory in expanding universe. ... More
Continuous symmetries and approximate quantum error correctionFeb 20 2019Quantum error correction and symmetry arise in many areas of physics, including many-body systems, metrology in the presence of noise, fault-tolerant computation, and holographic quantum gravity. Here we study the compatibility of these two important ... More
Negative temperature in CPT-symmetic UniverseFeb 20 2019In Ref.1 (L. Boyle, K. Finn and N. Turok, CPT-Symmetric Universe, Phys. Rev. Lett. {\bf 121}, 251301 (2018)) the antispacetime Universe was suggested as the analytic continuation of our Universe across the Big Bang singularity. We extended this analytic ... More
Benchmarking a Non-Equilibrium Approach to Photon Emission in Relativistic Heavy-Ion CollisionsFeb 20 2019In this work, the production of photons through binary scattering processes is investigated for equilibrated hadronic systems. More precisely, a non-equilibrium hadronic transport approach to describe relativistic heavy-ion collisions is benchmarked with ... More
More five-parameter models for lepton mixingFeb 20 2019We propose four new lepton-mixing textures that may be enforced through well-defined symmetries in renormalizable models. Each texture has only five parameters to predict nine observables; the textures are therefore able to produce testable predictions ... More
Strong Decays of observed $Λ_c$ Baryons in the $^3P_0$ ModelFeb 20 2019The strong decay widths and some important branching ratios of possible Okubo-Zweig-Iizuka(OZI)-allowed strong decay channels of $\Lambda_c(2595)^+$, $\Lambda_c(2625)^+$, $\Lambda_c(2765)^+$ ($\Sigma_c(2765)^+$), $\Lambda_c(2860)^+$, $\Lambda_c(2880)^+$ ... More
Conference Summary of QNP2018Feb 20 2019This report is the summary of the Eighth International Conference on Quarks and Nuclear Physics (QNP2018). Hadron and nuclear physics is the field to investigate ultimate high-density quantum many-body systems bound by strong interactions. It is intended ... More
Simplest Radiative Dirac Neutrino Mass ModelsFeb 19 2019If neutrinos are Dirac particles, their right-handed partners must be present in the theory. Once introduced in the Standard Model (SM), the difference between the baryon number $B$ and the lepton number $L$ can be promoted to a local $U(1)_{B-L}$ symmetry ... More
Pseudoscalar Higgs boson pair production at a photon-photon collision in the two Higgs doublet modelFeb 19 2019In this study, the direct pair production of the pseudoscalar Higgs boson at a photon-photon collision is analyzed in the context of two Higgs doublet model, taking account the complete one-loop contributions. In order to illustrate the effect of the ... More
Four-graviton scattering to three loops in ${\mathcal N}=8$ supergravityFeb 19 2019We compute the three-loop scattering amplitude of four gravitons in ${\mathcal N}=8$ supergravity. Our results are analytic formulae for a Laurent expansion of the amplitude in the regulator of dimensional regularisation. The coefficients of this series ... More
Scalar DemocracyFeb 19 2019We conjecture that there exists a scalar bound state for every pair of fundamental fermions at a UV (`composite') scale, $\Lambda\gg v_{\text{weak}}$. This implies a large number of universally coupled, sub-critical Higgs doublets. All but the Standard ... More
Isotropic charged cosmologies in infrared-modified electrodynamicsFeb 19 2019It has long been known that the covariant formulation of quantum electrodynamics conflicts with the local description of states in the charged sector. Some of the solutions to this problem amount to modifications of the subsidiary conditions below some ... More
Percent-Level Test of Isotropic Expansion Using Type Ia SupernovaeFeb 19 2019We propose and implement a novel, robust, and non-parametric test of statistical isotropy of the expansion of the universe, and apply it to around one thousand type Ia supernovae from the Pantheon sample. We calculate the angular clustering of supernova ... More
Simple Factorization of the Jarlskog Invariant for Neutrino Oscillations in MatterFeb 19 2019For neutrino propagation in matter, we show that the Jarlskog invariant, which controls the size of true CP violation in neutrino oscillation appearance experiments, factorizes into three pieces: the vacuum Jarlskog invariant times two simple two-flavor ... More
Automating the Construction of Jet Observables with Machine LearningFeb 19 2019Machine-learning assisted jet substructure tagging techniques have the potential to significantly improve searches for new particles and Standard Model measurements in hadronic final states. Techniques with simple analytic forms are particularly useful ... More
Spectrum of the $uudc \bar c$ hidden charm pentaquark with an SU(4) flavor-spin hyperfine interactionFeb 19 2019We study a few of the lowest states of the pentaquark $uudc\overline{c}$, two of positive and one of negative parity in a constituent quark model with an SU(4) flavour-spin hyperfine interaction. The pentaquark positive parity is the antiquark parity ... More
Entropies for Coupled Harmonic Oscillators and TemperatureFeb 19 2019We study two entropies of a system composed of two coupled harmonic oscillators which is brought to a canonical thermal equilibrium with a heat-bath at temperature $T$. Using the purity function, we explicitly determine the R\'enyi and van Newmon entropies ... More
The role of the stochastic color field fluctuations on $J/ψ$ suppression in ultra-relativistic heavy-ion collisionsFeb 19 2019We consider the effect of the stochastic color field fluctuations in addition to the collisional as well as the radiative energy losses in the propagation of charm quarks in the hot and dense deconfined medium of quarks and gluons created in ultra-relativistic ... More
Constant curvature holomorphic solutions of the supersymmetric grassmannian sigma model: the case of $G(2,4)$Feb 19 2019We explore the constant curvature holomorphic solutions of the supersymmetric grassmannian sigma model $G(M,N)$ using in particular the gauge invariance of the model. Supersymmetric invariant solutions are constructed via generalizing a known result for ... More
Thermal emission from semi-classical dynamical systemFeb 19 2019Recently the bound on the Lyapunov exponent $\lambda_L \le 2\pi T/ \hbar$ in thermal quantum systems was conjectured by Maldacena, Shenker and Stanford. If we naively apply this bound to a system with a fixed Lyapunov exponent $\lambda_L$, it might predict ... More
Light scalars in composite Higgs modelsFeb 19 2019A composite Higgs boson is likely to be accompanied by additional light states generated by the same dynamics. This expectation is substantiated when realising the composite Higgs mechanism by an underlying gauge theory. We review the dynamics of such ... More
Massless Rarita-Schwinger field from a divergenceless anti-symmetric-tensor spinor of pure spin-$3/2$Feb 19 2019We construct the Rarita-Schwinger basis vectors, $U^\mu$, spanning the direct product space, $U^\mu:=A^\mu\otimes u_M$, of a massless four-vector, $ A^\mu $, with massless Majorana spinors, $u_M$, together with the associated field-strength tensor, ${\mathcal ... More
Spinning extensions of $D(2,1;α)$ superconformal mechanicsFeb 19 2019As is known, any realization of SU(2) in the phase space of a dynamical system can be generalized to accommodate the exceptional supergroup $D(2,1;\alpha)$, which is the most general $\mathcal{N}{=}\,4$ supersymmetric extension of the conformal group ... More
Absence of Landau-Peierls Instability in the Magnetic Dual Chiral Density Wave Phase of Dense QCDFeb 18 2019We investigate the stability of the Magnetic Dual Chiral Density Wave (MDCDW) phase of cold and dense QCD against collective low-energy fluctuations of the order parameter. The appearance of additional structures in the system free-energy due to the explicit ... More
Measurement of b-hadron fractions in 13 Tev pp collisionsFeb 18 2019The production fractions of $\overline{B}_s^0$ and $\Lambda_b^0$ hadrons, normalized to the sum of $B^-$ and $\overline{B}^0$ fractions, are measured in 13 TeV pp collisions using data collected by the LHCb experiment, corresponding to an integrated luminosity ... More
Measurement of b-hadron fractions in 13 TeV pp collisionsFeb 18 2019Feb 20 2019The production fractions of $\overline{B}_s^0$ and $\Lambda_b^0$ hadrons, normalized to the sum of $B^-$ and $\overline{B}^0$ fractions, are measured in 13 TeV pp collisions using data collected by the LHCb experiment, corresponding to an integrated luminosity ... More
Charged spherically symmetric black holes in $f(R)$ gravityFeb 18 2019A new class of analytic charged spherically symmetric black hole solutions, which behave asymptotically as flat or (A)dS spacetimes, is derived for specific classes of $f(R)$ gravity, i.e., $f(R)=R-2\alpha\sqrt{R}$ and $f(R)=R-2\alpha\sqrt{R-8\Lambda}$, ... More
Naturalness without new particlesFeb 18 2019We demonstrate that the physics which resolves naturalness problems need not take the form of new particles and can sometimes manifest itself as higher dimensional operators. As a proof of principle, we present a simple model where the scale of new particles ... More
ECO-like behavior in black hole analoguesFeb 18 2019Classical phenomenological aspects of acoustic perturbations on a draining bathtub geometry where a surface with reflectivity $\mathcal{R}$ is set at a small distance from the would-be acoustic horizon, which is excised, are addressed. A low-frequency ... More
Seeing in complete darkness, using the Unruh effectFeb 18 2019We present a new method by which, in principle, it is possible to "see in absolute darkness", i.e., without exchanging any real quanta through quantum fields. This is possible because objects modify the mode structure of the vacuum in their vicinity. ... More
Gravitational perturbations from oscillons and transients after inflationFeb 18 2019We study the scalar and tensor perturbations generated by the fragmentation of the inflaton condensate into oscillons or transients after inflation, using nonlinear classical lattice simulations. Without including the backreaction of metric perturbations, ... More
Lattice-based equation of state at finite baryon number, electric charge and strangeness chemical potentialsFeb 18 2019We construct an equation of state for Quantum Chromodynamics (QCD) at finite temperature and chemical potentials for baryon number $B$, electric charge $Q$ and strangeness $S$. We use the Taylor expansion method, up to the fourth power for the chemical ... More
Anomalous SupersymmetryFeb 18 2019We show that supersymmetry is anomalous in ${\cal N}=1$ superconformal quantum field theories (SCFTs) with an anomalous R-symmetry. This anomaly was originally found in holographic SCFTs at strong coupling. Here we show that this anomaly is present in ... More
Low-energy lepton physics in the MRSSM: $(g-2)_μ$, $μ\to eγ$ and $μ\to e$ conversionFeb 18 2019Low-energy lepton observables are discussed in the Minimal R-symmetric Supersymmetric Standard Model. We present comprehensive numerical analyses and the analytic one-loop results for $(g-2)_\mu$, $\mu \to e \gamma$, and $\mu \to e$ conversion. The interplay ... More
Ultra-peripheral-collision studies in the fixed-target mode with the proton and lead LHC beamsFeb 18 2019We address the physics case related to the studies of ultra-peripheral pH, pPb, PbH, and PbPb collisions in the fixed-target mode at the LHC. In particular, we discuss how one can measure the gluon generalized parton distribution E_g(x,xi,t) in exclusive ... More
A gauge invariant prescription to avoid $γ$-crossing instability in Galileon bounceFeb 18 2019We revisit the evolutions of scalar perturbations in a non-singular Galileon bounce. It is known that the second order differential equation governing the perturbations is numerically unstable at a point called $\gamma$-crossing. This instability is usually ... More
Non-linear evolution in QCD at high-energy beyond leading orderFeb 18 2019The next-to-leading order (NLO) Balitsky-Kovchegov (BK) equation describing the high-energy evolution of the scattering between a dilute projectile and a dense target suffers from instabilities unless it is supplemented by a proper resummation of the ... More
Probing the Scale of New Physics in the $ZZγ$ Coupling at $e^+e^-$ CollidersFeb 18 2019The $ZZ\gamma$ and $Z\gamma\gamma$ triple neutral gauge couplings are absent in the Standard Model (SM) at the tree level. They receive no contributions from effective dimension-6 operators, but can arise from effective operators of dimension-8. We study ... More
Cardy-like asymptotics of the 4d $\mathcal{N}=4$ index and AdS$_5$ blackholesFeb 18 2019Choi, Kim, Kim, and Nahmgoong have recently pioneered analyzing a Cardy-like limit of the superconformal index of the 4d $\mathcal{N}=4$ theory with complexified fugacities which encodes the entropy of the dual supersymmetric AdS$_5$ blackholes. Here ... More
Round Table on Axions and Axion-like ParticlesFeb 18 2019In this contribution, based on the discussion at a round table of the XIII Quark Confinement and the Hadron Spectrum - Confinement conference, we review the main properties of the QCD axion and, more generally, of axion-like particles and their relevance ... More
Bounce cosmology in generalized modified gravitiesFeb 18 2019We investigate the bounce realization in the framework of generalized modified gravities arising from Finsler and Finsler-like geometry. In particular, the richer intrinsic geometrical structure is reflected in the appearance of extra degrees of freedom ... More
Kinetic theory for massive spin-1/2 particles from the Wigner-function formalismFeb 18 2019We calculate the Wigner function for massive spin-1/2 particles in an inhomogeneous electromagnetic field to leading order in the Planck constant. Going beyond leading order in $\hbar$ we then derive a generalized Boltzmann equation in which the force ... More
Relativistic Quantum Kinetic Theory for Massive Fermions and Spin EffectsFeb 18 2019We present the complete first order relativistic quantum kinetic theory with spin for massive fermions derived from the Wigner function formalism in a concise form that shows explicitly how the 32 Wigner equations reduce to 4 independent transport equations. ... More
No-go theorem for asymptotically AdS static regular boson starsFeb 18 2019In a recent paper, Hod has proven no-go theorem for asymptotically flat static regular boson stars. In the present work, we extend discussions to the gravity with a negative cosmological constant. In the asymptotically AdS background, we show that spherically ... More
Electron-positron annihilation into hadrons at the higher-loop levels: Explicit formFeb 18 2019The paper constitutes the second part of the study of the R-ratio of electron-positron annihilation into hadrons [Eur. Phys. J. C77, 844 (2017)]. Specifically, the explicit expression for the R-ratio, which properly accounts for all the effects due to ... More
Interacting two-particle states in the symmetric phase of the chiral Nambu--Jona-Lasinio modelFeb 18 2019The renormalisation group flow of the chiral Nambu--Jona-Lasinio (NJL) model with one fermion flavor is mapped out in the symmetric phase with the help of the Functional Renormalisation Group (FRG) method using a physically motivated non-local trial effective ... More
Signal of a $\boldsymbol{D\bar D}$ bound state in the $ \boldsymbol{e^+ e^- \to J/ψD\bar D}$ reactionFeb 18 2019We analyze the $D\bar{D}$ mass distribution from a recent Belle experiment on the $e^+e^- \to J/\psi D\bar{D}$ reaction, using a unitary formalism with coupled channels $D^+D^-$, $D^0\bar{D}^0$, $D_s\bar{D}_s$, and $\eta\eta$, with some of the interactions ... More
Signal of a $\boldsymbol{D\bar D}$ bound state in the $ \boldsymbol{e^+ e^- \to J/ψD\bar D}$ reactionFeb 18 2019Feb 19 2019We analyze the $D\bar{D}$ mass distribution from a recent Belle experiment on the $e^+e^- \to J/\psi D\bar{D}$ reaction, using a unitary formalism with coupled channels $D^+D^-$, $D^0\bar{D}^0$, $D_s\bar{D}_s$, and $\eta\eta$, with some of the interactions ... More
Gravitational Searches for Lorentz Violation with Ultracold NeutronsFeb 18 2019We investigate the consequences of Lorentz violation (as expressed within the gravity sector of the Standard-Model Extension) upon the gravitational quantum states of ultracold neutrons (UCNs). Since our main aim is to compare our theoretical results ... More
Mean field and two-body nuclear effects in inclusive electron scattering on argon, carbon and titanium: the superscaling approachFeb 17 2019We compare the predictions of the SuSAv2 model including two-particle two-hole meson-exchange currents with the recent JLab data for inclusive electron scattering on three different targets (C, Ar and Ti). The agreement is very good over the full energy ... More
Experimental searches for muon decays beyond the Standard ModelFeb 17 2019The study of muon properties and decays played a crucial role in the early years of particle physics and contributed over decades to build and consolidate the Standard Model. At present, searches for muon decays beyond the Standard Model are performed ... More
Sensitivity of the intensity frontier experiments for neutrino and scalar portals: analytic estimatesFeb 17 2019In recent years, a number of intensity-frontier experiments have been proposed to search for feebly interacting particles with a mass in the GeV range. We show analytically how the characteristic shape of the sensitivity regions of such experiments - ... More
An inverse seesaw model with global $U(1)_H$ symmetryFeb 17 2019We propose an inverse seesaw model based on hidden global symmetry $U(1)_H$ in which we realize tiny neutrino masses with rather natural manner taking into account relevant experimental bounds. The small Majorana mass for inverse seesaw mechanism is induced ... More
Asymmetries of anti-triplet charmed baryon decaysFeb 17 2019We analyze the decay processes of ${\bf B}_c \to {\bf B}_n M$ with the $SU(3)_F$ flavor symmetry and spin-dependent amplitudes, where ${\bf B}_c({\bf B}_n)$ and $M$ are the anti-triplet charmed (octet) baryon and nonet meson states, respectively. In the ... More
IceCube Sterile Neutrino SearchesFeb 17 2019Anomalies in short baseline experiments have been interpreted as evidence for additional neutrino mass states with large mass splittings from the known, active flavors. This explanation mandates a corresponding signature in the muon neutrino disappearance ... More
Search for Extra Scalars Produced in Association with Muon Pairs at the ILCFeb 16 2019We study the search for an extra scalar $S$ boson produced in association with the $Z$ boson at the International Linear Collider (ILC). The study is performed at center-of-mass energies of 250 GeV and 500 GeV based on the full simulation of the International ... More
$b\rightarrow s μ^+ μ^-$ anomalies and related phenomenology in $U(1)_{B_3 - x_μL_μ- x_τL_τ}$ flavor gauge modelsFeb 16 2019We propose a generation dependent lepton/baryon gauge symmetry, $U(1)_{B_3 - x_\mu L_\mu - x_\tau L_\tau} \equiv U(1)_X$ (with $x_\mu + x_\tau =1$ for anomaly cancellation), as a possible solution for the $b \rightarrow s \mu^+ \mu^-$ anomalies. By introducing ... More
On DUNE prospects in the search for sterile neutrinosFeb 16 2019Experiments measuring the parameters of active neutrino oscillations can also search for sterile neutrinos in a part of sterile neutrino parameter space. In this paper we analyze the sensitivity of the upcoming experiment DUNE to the active-sterile neutrino ... More
A new approach to gauge coupling unification and proton decayFeb 16 2019A novel analytical formalism is proposed, linking the supersymmetric and GUT spectra in any GUT model in which the three gauge couplings unify. In each specific GUT model, one can then fully explore the interplay between the pattern of supersymmetry breaking ... More
An in-medium chiral power counting for nuclear matter and some applicationsFeb 16 2019We review on a chiral power counting for in-medium chiral perturbation theory with nucleons and pions as explicit degrees of freedom coupled to external sources. It allows for a systematic expansion including both local and pion-mediated inter-nucleon ... More
A C*-algebraic approach to interacting quantum field theoriesFeb 16 2019A novel C*-algebraic framework is presented for relativistic quantum field theories, fixed by a Lagrangean. It combines the postulates of local quantum physics, encoded in the Haag-Kastler axioms, with insights gained in the perturbative approach to quantum ... More
Study of the $hγZ$ coupling using $e^+e^-\xrightarrow{}h γ$ at the ILCFeb 16 2019We study the $e^+e^-\to h \gamma$ process at the International Linear Collider (ILC) to probe new physics in the $h\gamma Z$ coupling. The study is performed at a center of mass energy of 250 GeV and is based on the full simulation of the International ... More
Fermion Conformal Bootstrap in 4dFeb 15 2019We apply numerical conformal bootstrap techniques to the four-point function of a Weyl spinor in 4d non-supersymmetric CFTs. We find universal bounds on operator dimensions and OPE coefficients, including bounds on operators in mixed symmetry representations ... More
Scotogenic dark matter stability from gauged matter parityFeb 15 2019We explore the idea that dark matter stability results from the presence of a matter-parity symmetry, arising naturally as a consequence of the spontaneous breaking of an extended $\mathrm{SU(3) \otimes SU(3)_L \otimes U(1)_X \otimes U(1)_{N}}$ electroweak ... More
Detecting dark photon dark matter with Gaia-like astrometry observationsFeb 15 2019A class of dark photon dark matter models with ultralight masses would lead to oscillation of a test body through a coupling with baryons or $B-L$ charge. This periodical oscillation of an observer results in swing of a star's apparent position due to ... More
Safe ClockworkFeb 15 2019In this letter we demonstrate that safe quantum field theories can accommodate the clockwork mechanism upgrading it to a fundamental theory a l\'a Wilson. Additionally the clockwork mechanism naturally sources Yukawa hierarchies for safe completions of ... More
The Axidental UniverseFeb 15 2019Theories with several hundred axion fields have enormous numbers of distinct meta-stable minima. A small fraction of these local minima have vacuum energy compatible with current measurements of dark energy. The potential also contains regions suitable ... More
Which EFTFeb 15 2019We classify effective field theory (EFT) deformations of the Standard Model (SM) according to the analyticity property of the Lagrangian as a function of the Higgs doublet H. Our distinction in analytic and non-analytic corresponds to the more familiar ... More
Multi-stage jet evolution through QGP using the JETSCAPE framework: inclusive jets, correlations and leading hadronsFeb 15 2019The JETSCAPE Collaboration has recently announced the first release of the JETSCAPE package that provides a modular, flexible, and extensible Monte Carlo event generator. This innovative framework makes it possible to perform a comprehensive study of ... More
Coset CosmologyFeb 15 2019We show that the potential of Nambu-Goldstone bosons can have two or more local minima e.g. at antipodal positions in the vacuum manifold. This happens in many models of composite Higgs and of composite Dark Matter. Trigonometric potentials lead to unusual ... More
Path to the $0.01\%$ Theoretical Luminosity Precision Requirement for the FCC-ee (and ILC)Feb 15 2019We present pathways to the required theoretical precision for the luminosity targeted by the FCC-ee precision studies. We put the discussion in context by reviewing briefly the situation at the time of LEP. We then present the current status and routes ... More
Viable inflationary magnetogenesis with helical couplingFeb 15 2019We consider helical coupling to electromagnetism and present a simple model of evolution of the coupling function leading to a viable inflationary magnetogenesis. In this scenario, helical magnetic fields of any desirable strength of order up to $10^{- ... More
Non-local Lagrangians from Renormalons and Analyzable FunctionsFeb 15 2019We embed in a generalized Borel procedure the notion of renormalization and renormalons. While there are several efforts in literature to have a semi-classical understanding of the renormalons, here we argue that this is not the fundamental issue and ... More
Anisotropic $2$-form dark energyFeb 15 2019We study the dynamics of dark energy in the presence of a 2-form field coupled to a canonical scalar field $\phi$. We consider the coupling proportional to $e^{-\mu \phi/M_{\rm pl}} H_{\alpha \beta \gamma}H^{\alpha \beta \gamma}$ and the scalar potential ... More
Causally neutral quantum physicsFeb 15 2019In fundamental theories that accounts for quantum gravitational effects, the spacetime causal structure is expected to be quantum uncertain. Previous studies of quantum causal structure focused on finite-dimensional systems. Here we present an algebraic ... More
Fully Heavy Tetraquark ${bb \bar c \bar c}$: Lifetimes and Weak DecaysFeb 15 2019We study the lifetime and weak decays of the full-heavy S-wave $0^+$ tetraquark $T^{\{bb\}}_{\{\bar c\bar c\}}$. Using the operator product expansion rooted in heavy quark expansion, we find a rather short lifetime, at the order $(0.1-0.3)\times 10^{-12}s$ ... More
Exploring SMEFT in VH with Machine LearningFeb 15 2019In this paper we study the use of Machine Learning techniques to exploit kinematic information in VH, the production of a Higgs in association with a massive vector boson. We parametrise the effect of new physics in terms of the SMEFT framework. We find ... More
An alternative formulation of left-right symmetry with $B-L$ conservation and purely Dirac neutrinosFeb 15 2019We propose an alternative formulation of a Left-Right Symmetric Model (LRSM) where the difference between baryon number ($B$) and lepton number ($L$) remains an unbroken symmetry. This is unlike the conventional formulation, where $B-L$ is promoted to ... More
Feynman's different approach to electrodynamicsFeb 15 2019We discuss a previously unpublished description of electromagnetism developed by Richard P. Feynman in the 1960s. Though similar to the existing approaches deriving electromagnetism from special relativity, the present one extends a long way towards the ... More
Neutrinos below 100 TeV from the southern sky employing refined veto techniques to IceCube dataFeb 15 2019Many Galactic sources of gamma rays, such as supernova remnants, are expected to produce neutrinos with a typical energy cutoff well below 100 TeV. For the IceCube Neutrino Observatory located at the South Pole, the southern sky, containing the inner ... More
Investigating tetraquarks composed of $us\bar{d}\bar{b}$ and $ud\bar{s}\bar{b}$Feb 15 2019In the framework of the quark delocalization color screening model, we investigate tetraquarks composed of $us\bar{d}\bar{b}$ and $ud\bar{s}\bar{b}$ in two structures: meson-meson structure and diquark-antidiquark structure. Neither bound state nor resonance ... More
A magnetic spectrometer to measure electron bunches accelerated at AWAKEFeb 15 2019A magnetic spectrometer has been developed for the AWAKE experiment at CERN in order to measure the energy distribution of bunches of electrons accelerated in wakefields generated by proton bunches in plasma. AWAKE is a proof-of-principle experiment for ... More
Production of $Z_c(3900$) and $Z_c(4020)$ in $B_c$ decayFeb 15 2019In the present work, we propose to search the charmonium-like states $Z_c(3900$) and $Z_c(4020)$ in the $B_c$ decay. In an effective Lagrangian approach, the branching ratios of $B_c^+ \to Z_c(3900)^+ \pi^0$ and $B_c^+\to Z_c (4020)^+ \pi^0$ are estimated ... More
Open-string singlet interaction as pomeron in elastic $pp, p\bar{p}$ scatteringFeb 15 2019We consider contributions of the open-string singlet~(OSS) interaction to the proton-proton scattering. Modelling baryon and meson as instanton and open string in the effective QCD string model, the typical pomeron is identified with a massive spin-2 ... More
Quantum Information Capsule in Multiple-Qudit Systems and Continuous-Variable SystemsFeb 15 2019Quantum correlations in an entangled many-body system are capable of storing information. Even when the information is injected by a local unitary operation to the system, the entanglement delocalizes it. In a recent study on multiple-qubit systems, it ... More
Revisiting the LHC reach in the displaced region of the minimal left-right symmetric modelFeb 15 2019We revisit discovery prospects for a long-lived sterile neutrino $N$ at the Large Hadron Collider (LHC) in the context of left-right symmetric theories. We focus on a displaced vertex search strategy sensitive to $\mathcal{O}$(GeV) neutrino masses produced ... More
Nuclear Transparency in Monte Carlo Neutrino Event GeneratorsFeb 14 2019Hadron cascade model is an essential part of Monte Carlo neutrino event generators that governs final state interactions of knocked-out nucleons and produced pions. It is shown that such model enriched with physically motivated modifications of nucleon-nucleon ... More
Elastic and diffractive scattering in the LHC eraFeb 14 2019We review elastic and diffractive scattering of protons (called also "forward physics") with emphasis on the LHC data, especially those deviating from the expectations based on extrapolations from earlier measurements at the ISR, Fermilab and thus triggering ... More
On $SU(3)_{F}$ Breaking through Final State Interactions and CP Asymmetries in $D\to P P$ DecaysFeb 14 2019We analyse $D$ decays to two pseudoscalars $(\pi,K)$ assuming the dominant source of $\mathrm{SU}(3)_F$ breaking lies in final state interactions. We obtain an excellent agreement with experimental data and are able to predict CP violation in several ... More
The Higgs Trilinear Coupling and the Scale of New PhysicsFeb 14 2019We consider modifications of the Higgs potential due to new physics at high energy scales. These upset delicate cancellations predicted by the Standard Model for processes involving Higgs bosons and longitudinal gauge bosons, and lead to a breakdown of ... More
Searching for heavy neutrinos with WWH productionFeb 14 2019Extensions of the Standard Model are required to give mass to the light neutrinos and explain neutrino oscillations. One of the simplest ideas is to introduce new heavy, gauge singlet fermions that play the role of right-handed neutrinos in a seesaw mechanism. ... More
Detecting hidden sector dark matter at HL-LHC and HE-LHC via long-lived stau decaysFeb 14 2019We investigate a class of models where the supergravity model with the standard model gauge group is extended by a hidden sector $U(1)_X$ gauge group and where the lightest supersymmetric particle is the neutralino in the hidden sector. We investigate ... More
Disorder and Mimesis at Hadron CollidersFeb 14 2019We discuss how systems with a large number of degrees of freedom and disorder in their mass matrix can play a role in particle physics. We derive results on their mass spectra using, where applicable, QFT techniques. We study concrete realizations of ... More