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In this work, we present a model-independent method to quantify the non-Gaussian fluctuations in the observable distributions, which are assessed by the difference between the measured observable distributions and reconstructed observable distributions via the Bayesian method. Our results indicate that the strength of non-Gaussian fluctuation increases with the beam energy, and is primarily driven

Loop quantum cosmology was shown to interpolate between de Sitter and FLRW Universe phases through a bounce by including Euclidean and Lorentzian terms of the Hamiltonian constraint with weight one -that corresponding to classical General Relativity. Unitary evolution required self-adjoint extensions of the constraint and a Planckian cosmological constant was obtained. Independent work took a positive

The proton-radius puzzle refers to the discrepancy observed in measurements of the proton's charge radius when using different methods. This inconsistency has prompted extensive research and debate within the physics community, as it challenges the understanding of quantum electrodynamics and the fundamental properties of protons. In the present study, we determine the charge and magnetic radii of

In this paper, we first consider the shadow radius of a quantum corrected black hole proposed recently, and provide a bound on the correction parameter ξ based on the observational data of Sgr A*. Then, the effects of the correction parameter on the energy, angular momenta and angular velocities of particles on circular orbits in the accretion disk are discussed. It is found that the correction parameter

In this work we estimate the Nψ(2S)/NJ/ψ yield ratio in heavy-ion collisions, considering the interactions of the ψ(2S) and J/ψ states with light mesons in the hadron gas formed at the late stages of these collisions. Starting from the appropriate effective Lagrangians, we first compute the thermally-averaged cross sections for the production and absorption of the mentioned states, and then use them

The three-body approach to hadron-deuteron correlations is shown to turn into a two-body approach if the three-particle hadron-deuteron wave function factorizes into the deuteron wave-function and the wave function of a hadron motion relative to the deuteron. Then, the hadron-deuteron correlation function is as in the two-body approach only the source radius somewhat changes. For this reason, as we

We consider the massless Rarita-Schwinger (RS) LV QED. In this theory, we introduce the gauge fixing to obtain the propagator for the RS field, and calculate the Carroll-Field-Jackiw term, which turns out to be finite and ambiguous, and only in one calculation scheme, based on the nonlinear gauge framework, the gauge independence of the result is achieved.

A full set of optimized observables is measured in an angular analysis of the decay B0→K⁎(892)0μ+μ− using a sample of proton-proton collisions at s=13TeV, collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 140fb−1. The analysis is performed in six bins of the squared invariant mass of the dimuon system, q2, over the range 1.1

In this work, we present the transverse momentum spectra of prompt and decay photons in Au-Au collisions for sNN= 200 GeV, 62.4 GeV, 39 GeV, and 27 GeV. The major sources of the photons in Angantyr include hard processes, Parton showers, and resonance decay. The multiparton interactions and hadronic rescatterings significantly increase the photon yield. The model shows a good match with the available

Mass and width of a hidden charm-bottom axial-vector structure T containing bcb‾c‾ quarks are calculated in QCD sum rule framework. It is treated as a diquark-antidiquark state built of scalar diquark and axial-vector antidiquark components. The mass of T is computed using the two-point sum rule method. The width of this particle is evaluated by considering eight decay modes: The decays to ηbJ/ψ, ηcϒ(1S)

Large density fluctuations of conserved charges have been proposed as a promising signature for exploring the QCD critical point in heavy-ion collisions. These fluctuations are expected to exhibit a fractal or scale-invariant behavior, which can be probed by intermittency analysis. Recent high-energy experimental studies reveal that the signal of critical fluctuations related to intermittency is very

An elegant model for lepton masses and mixing is proposed in the light of both Type I and Type II seesaw mechanisms emphasizing the presence of discrete flavour symmetries Δ(27), Z3 and Z10. The model marks a forbidden region in the experimental 3σ bound of the atmospheric mixing angle. In addition, it highlights a quasi-degenerate mass spectra within the normal hierarchy of neutrino masses and constrains

The Weak Gravity Conjecture states that in any consistent theory of quantum gravity in the landscape of string theory, the repulsive force mediated by a U(1) gauge field must be stronger than the attractive force of gravity. In this work, we calculate quantum gravitational corrections to the charge-to-mass ratio of extremal Reissner-Nordström black holes, using the Vilkovisky-deWitt unique effective

Regular black holes, which avoid the essential central singularities, can be constructed through various methods, including nonlinear electrodynamics and quantum corrections. Recently, it was shown that via an infinite tower of higher-curvature corrections, one can obtain different regular black hole solutions in any spacetime dimension D≥5. Utilizing the concept of thermodynamical topology, we examine

We study the properties of a system composed of strongly interacting matter with an isospin imbalance, using as an effective description of QCD the two-flavor Linear Sigma Model with quarks. From the one-loop effective potential, including the two light quarks, pions and sigma contributions, and enforcing the restrictions imposed by chiral symmetry, we show that the development of an isospin condensate

This work discusses the emergence of the Polyakov action from the low-energy limit of an array of relativistic particles with nearest neighbor interactions, which is suggestive of a “microscopic” description of string theory.

Massive fermions produced with definite chirality undergo chiral oscillations. So far, this phenomenon has been mainly described in the framework of single particle relativistic quantum mechanics. In this paper, we present a quantum field theory approach to chiral oscillations in analogy with the one used to describe flavor mixing and oscillations. By taking the expectation value of chiral charges

Motivated by the work of Cardoso et al. (2022) [15] on black holes in galaxies, we derive a new black hole solution surrounded by a Dekel-Zhao (DZ) dark matter profile. The derived metric, influenced by DZ profile parameters, exhibits two distinct regimes: for r≪rc (rc is a characteristic radius), exponential corrections dominate, producing significant deviations from the Schwarzschild solution near

We investigate a general U(1)X scenario where we introduce three generations of Standard Model (SM) singlet Right Handed Neutrinos (RHNs) to generate the light neutrino mass through the seesaw mechanism after the breaking of U(1)X and electroweak symmetries. In addition to that, a general U(1)X scenario involves an SM-singlet scalar field and due to the U(1)X symmetry breaking the mass of a neutral

This work introduces a new Control Neural Network (Ctrl.NN) method to uncover evidence of exotic quantum state, i.e., the breathing modes in 3-α resonant states of 12C nucleus. We provide the most precise microscopic description to date for the 12C energy spectrum, identify two new exotic breathing states, and uncover strong evidence that directly connects the recent experimental observations to the

The standard cosmological model currently in force, aka ΛCDM, has been plagued with a variety of phenomenological glitches or tensions in the last decade or so, which puts it against the wall. At the core of the ΛCDM we have a rigid cosmological term, Λ, for the entire cosmic history. This feature is unnatural and even inconsistent in the context of fundamental physics. Recently, the results from the

We study exclusive J/ψ and ϒ photoproduction for proton and Pb targets in the high-energy limit, with the energy dependence computed using the linear Balitsky–Fadin–Kuraev–Lipatov and the nonlinear Balitsky–Kovchegov evolution equations. The difference between these two evolution equations can be directly attributed to gluon saturation physics. We find that for proton targets there is no difference

The study of astrophysical phenomena like black hole shadows is an effective approach to properly understand the modified gravity and explore its validity. Motivated by recent astrophysical observations, we consider a black hole (BH) in F(R)-ModMax gravity and study the optical features such as the shadow's geometrical shape, energy emission rate, and deflection of light. More specifically, we show

We report a search for a lepton-portal dark matter model, where dark matter couples to a charged lepton in the standard model. This simplified model naturally leads to photon-mediated dark matter interactions with nuclei, making it suitable for direct dark matter detection experiments. Matching to the framework of non-relativistic effective field theory for dark matter, we report the first sensitive

Very Special Linear Gravity (VSL-Gravity) is an alternative model of linearized gravity that incorporates massive gravitons while retaining only two physical degrees of freedom thanks to gauge invariance. Recently, the gravitational period-decay dynamics of the model has been determined using effective field theory techniques. In this study, we conduct a comprehensive Bayesian analysis of the PSR B1913+16

Poisson electrodynamics is the semi-classical limit of U(1) non-commutative gauge theory. It has been studied so far as a theoretical model, where an external field would be the source of the non-commutative effects in space-time. Being the Standard Model of fundamental interactions a local theory, the prediction of observables within it would be drastically altered by such effects. The natural question

Rotating black holes are well known to amplify the perturbing bosonic fields in certain parameter spaces. This phenomenon is popularly known as superradiance. In addition to rotation in the spacetime, charge plays a crucial role in the amplification process. In the present study, we have considered the spacetime of a magnetically charged rotating black hole emerging from the coupling of nonlinear electromagnetic

Since 2003, plenty of resonant structures have been observed in the heavy quarkonium regime. Many of them are close to the thresholds of a few pairs of heavy hadrons. They are candidates of exotic hadrons and have attracted immense attentions. Based on a coupled-channel nonrelativistic effective field theory, we classify the near-threshold structures of a symmetry-related two-channel system by studying

The Born-Oppenheimer potentials for QCD with light quarks include adjoint-hadron potentials that are repulsive at short distances and heavy-hadron-pair potentials that approach thresholds at large distances. The adjoint-hadron potentials must connect smoothly to the heavy-hadron-pair potentials at intermediate distances. We identify exotic hidden-heavy hadrons as bound states and resonances in adjoint-hadron

We introduce a new framework for the physics of heavy-light mesons, whose key element is the effective incorporation of flavour-dependent contributions into the corresponding bound-state and quark gap equations. These terms originate from the fully-dressed quark-gluon vertices appearing in the kernels of these equations, and provide a natural distinction between “light” and “heavy” quarks. In this

Back-angle quasi-elastic (QE) scattering provides critical barrier information in massive nuclear reactions leading to the synthesis of superheavy nuclei. The shapes and peaks of QE barrier distributions serve as fingerprints of nuclear structures and reaction dynamics. Couplings to collective movements can lead to distinctive peaks in the barrier distributions, but the role of multi-phonon and high-spin

Within the framework of leading power factorization formalism of nonrelativistic quantum chromodynamics, we calculate the jet fragmentation function for high transverse momentum J/ψ production in proton-proton (pp) collisions with center-of-mass energies ranging from s=500 GeV to 13 TeV. The good agreements between theory and experimental data indicate that J/ψ production within a jet is dominated

Quite some years ago, Oleg Chalykh has built a nice theory from the observation that the Macdonald polynomial reduces at t=q−m to a sum over permutations of simpler polynomials called Baker-Akhiezer functions, which can be unambiguously constructed from a system of linear difference equations. Moreover, he also proposed a generalization of these polynomials to the twisted Baker-Akhiezer functions.

The lifetimes of low-lying excited states below the 8+ seniority isomer were directly measured using fast timing detectors in the neutron-deficient isotopes 98,100Cd. This experiment was conducted with the DEcay SPECtroscopy (DESPEC) setup at GSI, where the ions of interest were produced via a fragmentation reaction and identified using the FRagment Separator (FRS) before being implanted in the AIDA

In this paper, we use a machine learning technique, specifically genetic algorithms, to reconstruct the functional form of f(Q) gravity in a model-independent manner. To achieve this, we use Hubble measurements derived from cosmic chronometers and radial baryon acoustic oscillations, including the latest Dark Energy Spectroscopic Instrument (DESI) BAO data. For the cosmic chronometers, we estimate

We propose a black hole microstate counting method based on the canonical quantization of the asymptotic symmetries of a two-dimensional dilaton-gravity system at future null infinity. This dilaton-gravity is obtained from the s-wave reduction of an N-dimensional Einstein gravity over a generic asymptotically flat black hole solution. We show that a Cardy-type formula leads to the Bekenstein-Hawking

The minimal set of leptoquarks capable of generating radiative masses for the neutrinos into a 3-3-1 model consist of one triplet and one singlet of scalar leptoquarks. As an interesting result, the standard neutrinos acquire small Majorana masses at the one-loop level, while right-handed (sterile) neutrinos obtain small Majorana masses at the two-loop level, naturally making them light particles as

In the present paper we constructed the supercharges and Hamiltonians for all variants of superconformal mechanics associated with the superalgebras osp(8|2),F(4),osp(4⋆|4), and su(1,1|4). The fermionic and bosonic fields involved were arranged into generators spanning so(8),so(7),so(5)⊕su(2) and su(4)⊕u(1)R-symmetry currents of the corresponding superconformal algebras. The bosonic and fermionic parts

We systematically assess the DUNE experiment's ability to distinguish between various beyond-standard neutrino oscillation hypotheses pair combinations. For a pair comparison, we evaluate the statistical separation, where one hypothesis plays the role of the true signal while the other corresponds to the test signal. The beyond-standard neutrino oscillation hypotheses under scrutiny include neutrino

In this article, we investigate the phenomenology of the Magueijo-Smolin (MS) model of Doubly Special Relativity by examining the non-relativistic (NR) limit of the Dirac equation and its implications for spin dynamics. A deformed Dirac equation is derived within the MS model framework and is used to explore the continuity equation and the NR limit, leading to a deformed Schrödinger-Pauli equation

The search for remnants of the QCD chiral critical point is a central objective of current and future high-energy ion collision experiments. Previous studies suggest that a scaling law relating higher-order factorial moments of hadron multiplicity fluctuations to the second factorial moment could serve as a tool for detecting the QCD critical point. However, we demonstrate that this scaling law is

We construct 2d Jackiw-Teitelboim (JT) gravity in the framework of symmetric teleparallel gravity based on a non-metricity tensor. In symmetric teleparallel gravity, we often use the scalar quantity Q composed of the bilinear terms of the non-metricity tensor but Q is not a unique scalar quantity from the viewpoint of covariance. However, other scalar quantities composed of the non-metricity tensor

A new nonlocal dispersive-optical-model analysis has been carried out for neutrons and protons in 48Ca that reproduces the weak-form-factor measurement of CREX. In addition to elastic-scattering angular distributions, total and reaction cross sections, single-particle energies, the neutron and proton numbers, and the charge distribution, the CREX-measured weak form factor has been fit to extract the

We measure the spin-density matrix elements (SDMEs) of the Δ++(1232) in the photoproduction reaction γp→π−Δ++(1232) with the GlueX experiment in Hall D at Jefferson Lab. The measurement uses a linearly–polarized photon beam with energies from 8.2 to 8.8 GeV and the statistical precision of the SDMEs exceeds the previous measurement by three orders of magnitude for the momentum transfer squared region

The neutron total cross section of iron (natFe) plays an important role in the basic science of nuclear physics, nuclear technology and nuclear energy application. A new measurement of the total cross section of iron from 0.3 eV to 150 MeV was carried out in single and double bunch modes by transmission method and time of flight method with multi-cell fast fission ionization chamber (FIC) with 235U

The nuclear contact characterizes the nucleon-nucleon pairs in close proximity and serves as an important tool for studying the short-range correlations (SRCs) within atomic nuclei. While they have been extracted for selected nuclei, the investigation of their behavior across the nuclear chart remains limited. Very recently, Yankovich, Pazy, and Barnea have proposed a set of universal laws (YPB laws)

We show how a nonlocal gravitational interaction can circumvent the Weinberg no-go theorem on cosmological constant, which forbids the existence of any solution to the cosmological constant problem within the context of local field theories unless some fine-tuning is assumed. In particular, Infinite Derivative Gravity theories hint at a possible understanding of the cosmological constant as a nonlocal

This paper investigates the cosmological implications of the modified gravity framework known as f(R,Σ,T) gravity, focusing on its potential to unify and extend current cosmological models. The theory, introduced by Bakry and Ibraheem in 2023, combines the Ricci scalar, a scalar parameter representing torsion or other geometric properties, and the trace of the energy-momentum tensor. By analyzing observational

We demonstrate that chiral symmetry breaking occurs in the confining regime of QCD-like theories with Nc colors and Nf flavors. Our proof is based on a novel strategy, called ‘downlifting’, by which solutions of the 't Hooft anomaly matching and persistent mass conditions for a theory with Nf−1 flavors are constructed from those of a theory with Nf flavors, while Nc is fixed. By induction, chiral symmetry

We analyze (p,t) two-neutron transfer reactions in a semi-microscopic model. The overlap integrals of the target nucleus are calculated in a microscopic cluster model. The Resonating Group Method (RGM) assumes a cluster structure of the nucleus, and is well adapted to halo nuclei since the long-range part of the wave function is accurately described. We focus on (p,t) reactions involving 6He and 11Li

We present realistic estimates for the duration of the hadronic stage in central Au+Au reactions in the RHIC-BES energy regime. To this aim, we employ a full set of coupled rate equations to describe the time evolution of the system from chemical to kinetic freeze-out. Combined with the recently measured data by the STAR collaboration on K⁎/K ratios, we show that the previous estimates substantially

The NA62 experiment at the CERN SPS reports the first detection of a tagged neutrino candidate based on the data collected in 2022. The candidate consists of a K+→μ+νμ decay where the charged particles are reconstructed and the neutrino is detected through a charged-current interaction in a liquid krypton calorimeter.

We examine nonrenormalizable Lorentz- and CPT-violating effective operators applied to the quark sector of the Standard Model. Using Drell-Yan events collected by the ATLAS and CMS Collaborations, several constraints are extracted from time-independent modifications of the cross section on the Z-boson pole. The sensitivity to time-dependent modifications is also estimated by simulating a sidereal-time

The combinatorics of dimer models on brane tilings describe a large class of four-dimensional N=1 gauge theories that afford quiver descriptions and have toric moduli spaces. We introduce a combinatorial optimization method leveraging simulated annealing to explicitly construct geometrically consistent brane tilings, providing a proof of concept for efficient generation of gauge theories using metaheuristic

In this paper, we extend the definition of the Chern-Simons type characteristic classes in the continuous case to Abelian lattice gauge theory. Then, we show that the exterior differential of the k-th Chern-Simons type characteristic class is exactly equal to the coboundary of the cochain of the (k−1)-th Chern-Simons type characteristic class based upon the noncommutative differential calculus on the

We report on mass measurements of three long-lived states in 114Rh performed with the JYFLTRAP Penning-trap mass spectrometer: the ground state and two isomers with estimated half-lives of about one second. The used Phase-Imaging Ion-Cyclotron-Resonance technique allowed for the discovery of a so far unknown second long-lived isomer. All three states were produced directly in proton-induced fission

Parity-violating electron scattering experiments on Ca48 (CREX) and Pb208 (PREX-2) offer valuable insight into the isovector properties of finite nuclei, providing constraints for the density dependence of the nuclear equation of state, which is crucial for understanding astrophysical phenomena. In this work, we establish functional dependencies between the properties of finite nuclei—such as weak