-
Measurement of J/ψ and [formula omitted] production in p + p and p + d interactions at 120 GeV Phys. Lett. B (IF 4.3) Pub Date : 2024-09-18 SeaQuest Collaboration, C.H. Leung, K. Nagai, K. Nakano, D. Nawarathne, J. Dove, S. Prasad, N. Wuerfel, C.A. Aidala, J. Arrington, C. Ayuso, C.L. Barker, C.N. Brown, W.C. Chang, A. Chen, D.C. Christian, B.P. Dannowitz, M. Daugherity, L. El Fassi, D.F. Geesaman, R. Gilman, Y. Goto, R. Guo, T.J. Hague, R.J. Holt, M.F. Hossain, D. Isenhower, E. Kinney, A. Klein, D.W. Kleinjan, Y. Kudo, P.-J. Lin, K. Liu
We report the p+p and p+d differential cross sections measured in the SeaQuest experiment for J/ψ and ψ(2S) production at ▪ beam energy covering the forward x-Feynman (xF) range of 0.5
-
Constraining the axial-vector X17 interpretation with 12C data Phys. Lett. B (IF 4.3) Pub Date : 2024-09-16 Cornelis J.G. Mommers, Marc Vanderhaeghen
Recent findings of an unexpected, narrow resonance in the e+e− decay spectra of excited states of 8Be, 4He and 12C by the ATOMKI collaboration have received considerable experimental and theoretical attention, whereby a new, 17-MeV vector-like or axial-vector-like boson termed X17 was conjectured as an explanation of the anomaly. Further analysis of all existing constraints disfavors a vector X17 scenario
-
Do we owe our existence to gravitational waves? Phys. Lett. B (IF 4.3) Pub Date : 2024-09-16 John Ellis, Brian D. Fields, Rebecca Surman
Two heavy elements essential to human biology are thought to have been produced by the astrophysical r-process, which occurs in neutron-rich environments: iodine is a constituent of thyroid hormones that affect many physiological processes including growth and development, body temperature and heart rate, and bromine is essential for tissue development and architecture. Collisions of neutron stars
-
Quantification of 2D vs 3D BAO tension using SNIa as a redshift interpolator and test of the Etherington relation Phys. Lett. B (IF 4.3) Pub Date : 2024-09-16 Arianna Favale, Adrià Gómez-Valent, Marina Migliaccio
Several studies in the literature have found a disagreement between compressed data on Baryon Acoustic Oscillations (BAO) derived using two distinct methodologies: the two-dimensional (2D, transverse or angular) BAO, which extracts the BAO signal from the analysis of the angular two-point correlation function; and the three-dimensional (3D or anisotropic) BAO, which also exploits the radial clustering
-
Erratum to “Comparison of inclusive and photon-tagged jet suppression in 5.02 TeV Pb+Pb collisions with ATLAS” [Phys. Lett. B 846 (2023) 138154] Phys. Lett. B (IF 4.3) Pub Date : 2024-09-14 The ATLAS Collaboration
-
Transverse polarization of Lambda hyperons in hadronic collisions Phys. Lett. B (IF 4.3) Pub Date : 2024-09-13 Ying Gao, Kai-Bao Chen, Yu-Kun Song, Shu-Yi Wei
The transverse polarization of Λ hyperon within reconstructed jets in hadronic collisions offers a complementary platform to probe the polarized fragmentation function D1T⊥. We illustrate that by performing a global analysis of the transverse polarization of Λ hyperons produced in different kinematic regions and in different hadronic collisions, such as pp, pp¯, pA, and γA collisions, we can pin down
-
Electric conductivity of hot and dense nuclear matter Phys. Lett. B (IF 4.3) Pub Date : 2024-09-13 Joseph Atchison, Yiding Han, Frank Geurts
Transport coefficients play an important role in characterising hot and dense nuclear matter, such as that created in ultra-relativistic heavy-ion collisions (URHIC). In the present work we calculate the electric conductivity of hot and dense hadronic matter by extracting it from the electromagnetic spectral function, through its zero energy limit at vanishing 3-momentum. We utilise the vector dominance
-
Prediction of the dark fermion mass using multicritical-point principle Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 Yoshiki Matsuoka
This paper proposes a method to determine the effective potential using the multicritical-point principle (MPP) under the additional scalar field. The MPP is applied to the model in which a singlet dark fermion and a singlet real scalar field are added to the Standard Model (SM) to predict the dark fermion mass. As a result, the dark fermion mass is predicted to be about 901–972 GeV.
-
The proton charge radius from dimuon photoproduction off the proton Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 Yong-Hui Lin, Feng-Kun Guo, Ulf-G. Meißner
We investigate the feasibility of measuring the proton charge radius through dimuon photoproduction off a proton target. Our findings indicate that the Bethe-Heitler mechanism, which dominates at small momentum transfers, allows for an extraction of the proton electromagnetic form factors in the extremely low Q2 region below 10−3 GeV2 in the spacelike region, when the incident photon beam energy exceeds
-
Unitarity in the non-relativistic regime and implications for dark matter Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 Marcos M. Flores, Kalliopi Petraki
Unitarity sets upper limits on partial-wave elastic and inelastic cross-sections, which are often violated by perturbative computations. We discuss the dynamics underlying these limits in the non-relativistic regime, namely long-range interactions, and show how the resummation of the 2-particle-irreducible diagrams arising from squaring inelastic processes unitarizes both elastic and inelastic cross-sections
-
Light-light scattering in Very Special Relativity Quantum Electrodynamics and cosmic anisotropies Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 J. Alfaro
We consider scattering of light by light in Very Special Relativity (VSR) Quantum Electrodynamics (QED) with a non-zero photon mass. In order to preserve gauge invariance and Sim(2) symmetry we made use of a recently introduced infrared regularization of VSR theories. Additionally, we show that all one loop diagrams with any number of photon external legs and zero fermion legs reduce to the standard
-
Neutrino mixing from a fresh perspective Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 Pralay Chakraborty, Manash Dey, Biswajit Karmakar, Subhankar Roy
We propose a neutrino mass matrix texture bearing a suitable correlation m22=−2m13 and study its phenomenological implications. In light of both normal and inverted hierarchies, the texture imposes specific bounds on some observational parameters. As a potential application, the prediction of effective Majorana neutrino mass mββ is visualized for both hierarchies. To understand the proposed texture
-
Microlensing and event rate of static spherically symmetric wormhole Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 Ke Gao, Lei-Hua Liu
The study focuses on the impact of microlensing in modern cosmology and introduces a new framework for the static spherically symmetrical wormhole in terms of the radial equation of state. Following a standard procedure, the study calculates the lensing equation, magnification, and event rate based on the radial equation of state. The analysis highlights that the image problem of the light source is
-
Ab initio calculations of anomalous seniority breaking in the πg9/2 shell for the N = 50 isotones Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 Q. Yuan, B.S. Hu
We performed ab initio valence-space in-medium similarity renormalization group (VS-IMSRG) calculations based on chiral two-nucleon and three-nucleon interactions to investigate the anomalous seniority breaking in the neutron number N=50 isotones: 92Mo, 94Ru, 96Pd, and 98Cd. Our calculations well reproduced the measured low-lying spectra and electromagnetic E2 transitions in these nuclei, supporting
-
Measurement of the impact-parameter dependent azimuthal anisotropy in coherent ρ0 photoproduction in Pb–Pb collisions at [formula omitted] TeV Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 ALICE Collaboration, S. Acharya, D. Adamová, A. Agarwal, G. Aglieri Rinella, L. Aglietta, M. Agnello, N. Agrawal, Z. Ahammed, S. Ahmad, S.U. Ahn, I. Ahuja, A. Akindinov, V. Akishina, M. Al-Turany, D. Aleksandrov, B. Alessandro, H.M. Alfanda, R. Alfaro Molina, B. Ali, A. Alici, N. Alizadehvandchali, A. Alkin, J. Alme, G. Alocco, T. Alt, A.R. Altamura, I. Altsybeev, J.R. Alvarado, C.O.R. Alvarez, M.N
This Letter presents the first measurement of the impact-parameter dependent angular anisotropy in the decay of coherently photoproduced ρ0 mesons. The ρ0 mesons are reconstructed through their decay into pion pairs. The measured anisotropy corresponds to the amplitude of the cos(2ϕ) modulation, where ϕ is the angle between the two vectors formed by the sum and the difference of the transverse momenta
-
Gravitational wave signal extraction against non-stationary instrumental noises with deep neural network Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 Yuxiang Xu, Minghui Du, Peng Xu, Bo Liang, He Wang
Sapce-borne gravitational wave antennas, such as LISA and LISA-like mission (Taiji and Tianqin), will offer novel perspectives for exploring our Universe while introduce new challenges, especially in data analysis. Aside from the known challenges like high parameter space dimension, superposition of large number of signals etc., gravitational wave detections in space would be more seriously affected
-
Mach's principle and dark matter Phys. Lett. B (IF 4.3) Pub Date : 2024-09-12 João Magueijo
In this paper we entertain a Machian setting where local physics is non-locally affected by the whole Universe, taking the liberty to identify the local (“Newton's bucket”) with our visible Universe, and the whole Universe (Mach's “fixed stars”) with the global Universe beyond our horizon. Crucially, we allow for the two to have different properties, so that we are beyond the traditional FRW setting
-
Observation of near-scission “polar” and “equatorial” proton emission in heavy-ion induced fission Phys. Lett. B (IF 4.3) Pub Date : 2024-09-11 Pawan Singh, Y.K. Gupta, G.K. Prajapati, B.N. Joshi, V.G. Prajapati, N. Sirswal, K. Ramachandran, A.S. Pradeep, V.S. Dagre, M. Kumar, A. Jhingan, N. Deshmukh, B.V. John, B.K. Nayak, D.C. Biswas, R.K. Choudhury
Proton and α-particle energy spectra were measured in coincidence with fission fragments at different relative angles in 16O (96 MeV) + 232Th reaction. The multiplicity spectra were analyzed within the framework of a Moving Source Disentangling Analysis (MSDA) to determine contributions from different emission stages. The MSDA conclusively shows “Near Scission Emission (NSE)” as an essential component
-
Can millicharge be probed at future Super Tau Charm Facility via mono-π0 searches? Phys. Lett. B (IF 4.3) Pub Date : 2024-09-11 Yu Zhang
We propose a new channel to search for millicharged particles at the future Super Tau Charm Facility (STCF) via mono-π0 signature. For the first time, we compute the mono-π0 signal events at the future STCF due to millicharged particle production, as well as due to standard model irreducible/reducible backgrounds. By utilizing the assumed 20 ab−1 luminosity for each running energy with s=2 GeV, 4 GeV
-
Search for pair production of boosted Higgs bosons via vector-boson fusion in the [formula omitted] final state using pp collisions at [formula omitted] with the ATLAS detector Phys. Lett. B (IF 4.3) Pub Date : 2024-09-11 The ATLAS Collaboration, G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, K. Abeling, N.J. Abicht, S.H. Abidi, M. Aboelela, A. Aboulhorma, H. Abramowicz, H. Abreu, Y. Abulaiti, B.S. Acharya, A. Ackermann, C. Adam Bourdarios, L. Adamczyk, S.V. Addepalli, M.J. Addison, J. Adelman, A. Adiguzel, T. Adye, A.A. Affolder, Y. Afik, M.N. Agaras, J. Agarwala, A. Aggarwal, C. Agheorghiesei, A. Ahmad, F. Ahmadov
A search for Higgs boson pair production via vector-boson fusion is performed in the Lorentz-boosted regime, where a Higgs boson candidate is reconstructed as a single large-radius jet, using 140 fb−1 of proton–proton collision data at s=13 TeV recorded by the ATLAS detector at the Large Hadron Collider. Only Higgs boson decays into bottom quark pairs are considered. The search is particularly sensitive
-
Influence of thermal bath on Pancharatnam-Berry phase in an accelerated frame Phys. Lett. B (IF 4.3) Pub Date : 2024-09-11 Debasish Ghosh, Bibhas Ranjan Majhi
A uniformly accelerated atom captures Pancharatnam-Berry phase in its quantum state and the phase factor depends on the vacuum fluctuation of the background quantum fields. We observe that the thermal nature of the fields further affects the induced phase. Interestingly the induced phase captures the exchange symmetry between the Unruh and real thermal baths. This observation further supports the claim
-
Ab initio computations from 78Ni towards 70Ca along neutron number N = 50 Phys. Lett. B (IF 4.3) Pub Date : 2024-09-11 B.S. Hu, Z.H. Sun, G. Hagen, G.R. Jansen, T. Papenbrock
We present coupled-cluster computations of nuclei with neutron number “south” of Ni using nucleon-nucleon and three-nucleon forces from chiral effective field theory. We find an erosion of the magic number toward Ca manifesting itself by an onset of deformation and increased complexity in the ground states. For Ni, we predict a low-lying rotational band consistent with recent data, which up until now
-
Hard Thermal Loop—Theory and applications Prog. Part. Nucl. Phys. (IF 14.5) Pub Date : 2024-09-10 Najmul Haque, Munshi G. Mustafa
In this review, we present the key aspects of modern thermal perturbation theory based on the hard thermal loop (HTL) approximation, including its theoretical foundations and applications within quantum electrodynamics (QED) and quantum chromodynamics (QCD) plasmas. To maintain conciseness, we focus on scenarios in thermal equilibrium, examining a variety of physical quantities and settings. Specifically
-
CPT and Lorentz symmetry tests with hydrogen using a novel in-beam hyperfine spectroscopy method applicable to antihydrogen experiments Phys. Lett. B (IF 4.3) Pub Date : 2024-09-10 L. Nowak, C. Malbrunot, M.C. Simon, C. Amsler, S. Arguedas Cuendis, S. Lahs, A. Lanz, A. Nanda, M. Wiesinger, T. Wolz, E. Widmann
We present a Rabi-type measurement of two ground-state hydrogen hyperfine transitions performed in two opposite external magnetic field directions. This puts first constraints at the level of ▪ on a set of coefficients of the Standard Model Extension, which were not measured by previous experiments. Moreover, we introduce a novel method, applicable to antihydrogen hyperfine spectroscopy in a beam,
-
Mapping low-lying states and [formula omitted] in even-even nuclei with machine learning Phys. Lett. B (IF 4.3) Pub Date : 2024-09-10 B.F. Lv, Z.L. Li, Y.J. Wang, C.M. Petrache
A machine-learning algorithm, Light Gradient Boosting Machine, was applied for the first time to investigate the fundamental experimental observables in even-even nuclei over the Segrè chart. Specifically, we focused on the excitation energies of the 21+ and 41+ states, and the reduced electric quadrupole transition probability B(E2;01+→21+). Present obtained results well reproduced experimental data
-
Gamma-ray signal from ZN≥3 dark matter-companion models Phys. Lett. B (IF 4.3) Pub Date : 2024-09-10 Jun Guo, Ji-Gang Zhao, Zhaofeng Kang
In Ref. [10], we proposed to replace the final dark matter (DM) particle in the semi-annihilation mode DM+DM→antiDM+Higgs boson with its ZN≥3 companion, thus reducing DM number density without DM-nucleon scattering. In this work, we study the indirect detection signals from DM annihilation, the Higgs boson pair with one of them from the companion decay being on- or off- shell, depending on the DM-companion
-
Reconstruction of Bremsstrahlung γ-rays spectrum in heavy ion reactions with Richardson-Lucy algorithm Phys. Lett. B (IF 4.3) Pub Date : 2024-09-07 Junhuai Xu, Yuhao Qin, Zhi Qin, Dawei Si, Boyuan Zhang, Yijie Wang, Qinglin Niu, Chang Xu, Zhigang Xiao
The high momentum tail (HMT) in the momentum distribution of nucleons above the Fermi surface has been regarded as an evidence of short-range correlations (SRCs) in atomic nuclei. It has been showcased recently that the np Bremsstrahlung radiation in heavy ion reactions can be used to extract HMT information. The Richardson-Lucy (RL) algorithm is introduced to the reconstruction of the original Bremsstrahlung
-
On character expansion and Gaussian regularization of Itzykson-Zuber measure Phys. Lett. B (IF 4.3) Pub Date : 2024-09-06 A. Morozov, A. Oreshina
Character expansions are among the most important approaches to modern quantum field theory, which substitute integrals by combinations of peculiar special functions from the Schur-Macdonald family. These formulas allow various deformations, which are not transparent in integral formulation. We analyze from this point of view the Itzykson-Zuber integral over unitary matrices which is exactly solvable
-
The m-component super KP hierarchy in Kac-van de Leur version Phys. Lett. B (IF 4.3) Pub Date : 2024-09-06 Huizhan Chen
In this paper, the m-component super KP hierarchy in form of free superfermions is constructed by Clifford superalgebra. The super bosonic counterpart of this hierarchy is described by using the vertex operators. Based on this, some super Hirota equations are determined and the bilinear identity is expressed by super Baker functions and tau function. Darboux transformation in terms of superfermions
-
Perturbative results of matrix elements of the axial current and their relation with the axial anomaly Phys. Lett. B (IF 4.3) Pub Date : 2024-09-06 Ignacio Castelli, Adam Freese, Cédric Lorcé, Andreas Metz, Barbara Pasquini, Simone Rodini
In the Standard Model of particle physics, the axial current is not conserved, due both to fermion masses and to the axial anomaly. Using perturbative quantum chromodynamics, we calculate matrix elements of the local and non-local axial current for a gluon target, clarifying their connection with the axial anomaly. In so doing, we also reconsider classic results obtained in the context of the nucleon
-
Hadronic scattering effects on Λ polarization in relativistic heavy ion collisions Phys. Lett. B (IF 4.3) Pub Date : 2024-09-05 Haesom Sung, Che Ming Ko, Su Houng Lee
The Λ hyperon spin flip and non-flip cross sections are calculated in a simple hadronic model by including both the -channel process involving the spin 3/2, positive parity resonance and the -channel process via the exchange of a scalar meson. Because of its large mass, the Λ spin flip to non-flip cross sections is negligibly small in the -channel process compared to the constant value of 1/3.5 in
-
Precise determination of the ηΛ scattering length and effective range and relationship to the Λ(1670) resonance Phys. Lett. B (IF 4.3) Pub Date : 2024-09-04 Man-Yu Duan, Melahat Bayar, Eulogio Oset
We use the Belle data on the K−p mass distribution of the Λc+→pK−π+ reaction near the ηΛ threshold to determine the ηΛ scattering length and effective range. We show that from these data alone we can determine the value of a with better precision than so far determined, and the value of r0 for the first time. The addition of the K−p→ηΛ data allows us to improve the precision of these magnitudes, with
-
Sign of the hZZ coupling and implication for new physics Phys. Lett. B (IF 4.3) Pub Date : 2024-09-04 Dipankar Das, Anirban Kundu, Miguel Levy, Anugrah M. Prasad, Ipsita Saha, Agnivo Sarkar
The magnitudes of the couplings of the scalar resonance at 125 GeV with the SM particles are found to be consistent with those of the SM Higgs boson. However, the signs are not experimentally determined in most of the cases, a prime example being that with the Z-boson pair. In other words, κZh, the ratio of the couplings of the actual 125 GeV resonance with ZZ and that of the SM Higgs boson with the
-
Rotating and accelerating AdS black holes in Einstein-Gauss-Bonnet gravity Phys. Lett. B (IF 4.3) Pub Date : 2024-09-04 Andres Anabalon, Dumitru Astefanesei, Adolfo Cisterna, Fernando Izaurieta, Julio Oliva, Constanza Quijada, Cristian Quinzacara
We present new, exact, rotating and accelerating solutions within the framework of five-dimensional Einstein-Gauss-Bonnet theory at the Chern-Simons point. The rotating solutions describe black holes characterized by a single rotation parameter, a mass parameter, and two extra integration constants that can be interpreted as hairs of a gravitational nature. It is noteworthy that the rotation cannot
-
New probe of non-Gaussianities with primordial black hole induced gravitational waves Phys. Lett. B (IF 4.3) Pub Date : 2024-09-03 Theodoros Papanikolaou, Xin-Chen He, Xiao-Han Ma, Yi-Fu Cai, Emmanuel N. Saridakis, Misao Sasaki
We propose a new probe of primordial non-Gaussianities (NGs) through the observation of gravitational waves (GWs) induced by ultra-light (MPBH<109g) primordial black holes (PBHs). Interestingly enough, the existence of primordial NG can leave imprints on the clustering properties of PBHs and the spectral shape of induced GW signals. Focusing on a scale-dependent local-type NG, we identify a distinct
-
Erratum to “Probing high-momentum component in nucleon momentum distribution by neutron-proton bremsstrahlung γ-rays in heavy ion reactions” [Phys. Lett. B 850 (2024) 138514] Phys. Lett. B (IF 4.3) Pub Date : 2024-09-03 Yuhao Qin, Qinglin Niu, Dong Guo, Sheng Xiao, Baiting Tian, Yijie Wang, Zhi Qin, Xinyue Diao, Fenhai Guan, Dawei Si, Boyuan Zhang, Yaopeng Zhang, Xianglun Wei, Herun Yang, Peng Ma, Haichuan Zou, Tianli Qiu, Xinjie Huang, Rongjiang Hu, Limin Duan, Hooi Jin Ong, Yanyun Yang, Shiwei Xu, Kang Wang, Zhen Bai, Junbing Ma, Fangfang Duan, Guo Yang, Qiang Hu, Hongwei Wang, Baohua Sun, Sergei P. Maydanyuk, Chang
-
Group-invariant machine learning on the Kreuzer-Skarke dataset Phys. Lett. B (IF 4.3) Pub Date : 2024-09-02 Christian Ewert, Sumner Magruder, Vera Maiboroda, Yueyang Shen, Pragya Singh, Daniel Platt
We use supervised machine learning to predict Hodge numbers for Calabi-Yau threefolds encoded by reflexive polyhedra. The Hodge number is invariant to the order of the vertices and the swapping of axes. Incorporating these properties, i.e. the invariance of column and row permutations for a matrix containing the polyhedron's vertices, promises better performance for Hodge number prediction. On a medium-sized
-
[formula omitted] and [formula omitted] two-particle femtoscopic correlations in PbPb collisions at [formula omitted] Phys. Lett. B (IF 4.3) Pub Date : 2024-09-02 The CMS Collaboration, A. Tumasyan, W. Adam, J.W. Andrejkovic, T. Bergauer, S. Chatterjee, K. Damanakis, M. Dragicevic, A. Escalante Del Valle, P.S. Hussain, M. Jeitler, N. Krammer, L. Lechner, D. Liko, I. Mikulec, P. Paulitsch, J. Schieck, R. Schöfbeck, D. Schwarz, M. Sonawane, S. Templ, W. Waltenberger, C.-E. Wulz, M.R. Darwish, T. Janssen, T. Kello, H. Rejeb Sfar, P. Van Mechelen, E.S. Bols, J.
Two-particle correlations are presented for KS0, ▪, and ▪ strange hadrons as a function of relative momentum in lead-lead collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The dataset corresponds to an integrated luminosity of 0.607nb−1 and was collected using the CMS detector at the CERN LHC. These correlations are sensitive to quantum statistics and to final-state interactions between
-
Dilatonic black holes in dRGT massive gravity Phys. Lett. B (IF 4.3) Pub Date : 2024-09-02 Lina Zhang, Qiyuan Pan, Bo Liu, De-Cheng Zou
Motivated by high interest in Lorentz invariant massive gravity models known as the dRGT massive gravity, we discuss the dRGT massive gravity including the coupling term between dilaton scalar field and massive graviton, and present static and spherically symmetric solutions of dilatonic black holes in four and higher dimensional spacetime. Later, we investigate phase structure of these black hole
-
Smooth reheating and dark matter via non-Abelian gauge theory Phys. Lett. B (IF 4.3) Pub Date : 2024-08-30 S. Biondini, H. Kolešová, S. Procacci
We demonstrate how a dark sector can provide a crucial link between a vacuum-dominated early universe and the later radiation-dominated epoch. As an example, we consider a feeble axion-like coupling of dark non-Abelian gauge fields with a single inflaton. In this scenario, a dark heat bath emerges at the end of inflation. As the dark sector cools down, its gauge fields confine into composite glueball
-
Diverging black hole entropy from quantum infrared non-localities Phys. Lett. B (IF 4.3) Pub Date : 2024-08-30 Alessia Platania, Jaime Redondo–Yuste
Local higher-derivative corrections to the Einstein-Hilbert action yield sub-leading corrections to the Bekenstein-Hawking area law. Here we show that if the quantum effective action comprises a certain class of infrared non-localities, the entropy of large black holes generally diverges to either positive or negative infinity. In such theories, large spherically symmetric black holes would be either
-
Quantizing a non-locally massive 2-form model Phys. Lett. B (IF 4.3) Pub Date : 2024-08-30 Kumar Abhinav
A non-local yet gauge-invariantly massive 2-form model is considered that leads to local and unitary dynamics upon proper gauge-fixing. Since canonical momenta cannot be defined owing to the non-locality, consistent quantization of this system warrants particular care. We construct the Dirac brackets and covariant commutators for this model, followed by its path integral quantization, leading to consistent
-
Scalar field induced dynamical evolution in teleparallel gravity Phys. Lett. B (IF 4.3) Pub Date : 2024-08-30 B. Mishra, S.A. Kadam, S.K. Tripathy
In this paper, we investigate the role of scalar field potentials in the dynamical evolution of the Universe. A gravity theory with a non-minimally coupled scalar field with torsion in the geometrical action simulating effective dark energy is considered to study an extended matter bounce scenario. The dynamical behaviour of the equation of state parameter has been studied near the bouncing epoch.
-
Quantum coherence and quantum Fisher information of Dirac particles in curved spacetime under decoherence Phys. Lett. B (IF 4.3) Pub Date : 2024-08-30 Chun-yao Liu, Zheng-wen Long, Qi-liang He
Previous studies have shown that the decoherence of environments generally negatively influences the quantum correlations in the Schwarzschild black hole. In our paper, we find that the decoherence of the generalized amplitude damping (GAD) channel has both positive and negative effects on the quantum coherence of Dirac fields, which means that the decoherence of environments can not only reduce the
-
Unveiling gravity's quantum fingerprint through gravitational waves Phys. Lett. B (IF 4.3) Pub Date : 2024-08-28 Partha Nandi, Bibhas Ranjan Majhi
We introduce an innovative method to explore gravity's quantum aspects using a novel theoretical framework. Our model delves into gravity-induced entanglement (GIE) while sidestepping classical communication limitations imposed by the LOCC principle. Specifically, we connect a non-relativistic two-dimensional quantum oscillator detector with linearly polarized gravitational waves (GWs), leveraging
-
Regularising spectral curves for homogeneous Yang-Baxter strings Phys. Lett. B (IF 4.3) Pub Date : 2024-08-28 Sibylle Driezen, Niranjan Kamath
In this Letter, we study the semi-classical spectrum of integrable worldsheet σ-models using the Spectral Curve. We consider a Homogeneous Yang-Baxter deformation of the AdS5×S5 superstring, understood as the composition of a Jordanian with a “non-diagonal” TsT deformation. We derive its type IIB supergravity solution, whose isometry algebra features zero supercharges and a non-relativistic conformal
-
Lagrangian formulation of the Tsallis entropy Phys. Lett. B (IF 4.3) Pub Date : 2024-08-28 Rocco D'Agostino, Giuseppe Gaetano Luciano
We investigate the gravitational origin of the Tsallis entropy, characterized by the nonadditive index δ. Utilizing Wald's formalism within the framework of f(R) modified theories of gravity, we evaluate the entropy on the black hole horizon for constant curvature solutions to the spherically symmetric vacuum field equations. In so doing, we demonstrate that the Tsallis entropy can be effectively derived
-
A note on the stability of the Cauchy horizon in regular black holes without mass inflation Phys. Lett. B (IF 4.3) Pub Date : 2024-08-28 Mohsen Khodadi, Javad T. Firouzjaee
Unlike generic models of regular black holes (BHs) with nonzero surface gravity on both Cauchy and event horizons, an inner-degenerate counterpart with zero Cauchy horizon surface gravity was recently proposed. For this regular BH solution with spherical symmetry, we examine the stability of the Cauchy horizon from both classic and quantum mechanics viewpoints. We find that the classical perturbations
-
Probing collectivity in heavy-ion collisions with fluctuations of the pT spectrum Phys. Lett. B (IF 4.3) Pub Date : 2024-08-28 Tribhuban Parida, Rupam Samanta, Jean-Yves Ollitrault
Event-by-event fluctuations in the initial stages of ultrarelativistic nucleus-nucleus collisions depend little on rapidity. The hydrodynamic expansion which occurs in later stages then gives rise to correlations among outgoing particles which depend weakly on their relative rapidity. Azimuthal correlations, through which anisotropic flow (vn(pT)) is defined, have been the most studied. Here we study
-
Unveiling the Hubble constant through galaxy cluster gas mass fractions Phys. Lett. B (IF 4.3) Pub Date : 2024-08-28 Javier E. Gonzalez, Marcelo Ferreira, Leonardo R. Colaço, Rodrigo F.L. Holanda, Rafael C. Nunes
In this work, we obtain Hubble constant (H0) estimates by using two galaxy cluster gas mass fraction measurement samples, Type Ia supernovae luminosity distances, and the validity of the cosmic distance duality relation. Notably, the angular diameter distance (ADD) to each galaxy cluster in the samples is determined by combining its gas mass fraction measurement with galaxy clustering observations
-
Bubble 36Ar and its new breathing modes Phys. Lett. B (IF 4.3) Pub Date : 2024-08-27 Ge Ren, Chun-Wang Ma, Xi-Guang Cao, Yu-Gang Ma
The bubble nuclei are important components of exotic nuclear structures characterized by special depletions of central densities. Focusing on bubble structures of 36Ar, the characterizations of bubble nuclei were explored with the framework of the extended quantum molecular dynamics model. Three density distribution modes were uncovered for the first time, i.e. micro-bubble, bubble, and cluster resonances
-
Quantum Big-Bounce as a phenomenology of RQM in the Mini-superspace Phys. Lett. B (IF 4.3) Pub Date : 2024-08-26 Simone Lo Franco, Giovanni Montani
We investigate the emergence of a quantum Big-Bounce in the context of an isotropic Universe, filled by a self-interacting scalar field, which plays the role of a physical clock. The bouncing cosmology is the result of a scattering process, driven by the scalar field potential, which presence breaks down the frequency separation of the Wheeler-DeWitt equation, treated in strict analogy to a relativistic
-
Searches for violation of Lorentz invariance in top quark pair production using dilepton events in 13 TeV proton-proton collisions Phys. Lett. B (IF 4.3) Pub Date : 2024-08-23 The CMS Collaboration, A. Hayrapetyan, A. Tumasyan, W. Adam, J.W. Andrejkovic, T. Bergauer, S. Chatterjee, K. Damanakis, M. Dragicevic, P.S. Hussain, M. Jeitler, N. Krammer, A. Li, D. Liko, I. Mikulec, J. Schieck, R. Schöfbeck, D. Schwarz, M. Sonawane, S. Templ, W. Waltenberger, C.-E. Wulz, M.R. Darwish, T. Janssen, P. Van Mechelen, E.S. Bols, J. D'Hondt, S. Dansana, A. De Moor, M. Delcourt, H. El
A search for violation of Lorentz invariance in the production of top quark pairs (tt‾) is presented. The measured normalized differential tt‾ production cross section, as a function of the sidereal time, is examined for potential modulations induced by Lorentz-invariance breaking operators in an effective field theory extension of the standard model (SM). The cross section is measured from collision
-
Mass fluctuations in non-rotating BTZ black holes Phys. Lett. B (IF 4.3) Pub Date : 2024-08-23 Hyewon Han, Bogeun Gwak
We investigate the impact of oscillations of a black hole's mass around its average value on the three-dimensional black hole geometry. Drawing on a classical framework that conceptualizes fluctuations near an event horizon as mass variations, we introduce a model where the metric of a black hole, formed from the collapse of a massive null shell, exhibits oscillatory behavior in spherical modes. This
-
Novel deep learning-based evaluation of neutron resonance cross sections Phys. Lett. B (IF 4.3) Pub Date : 2024-08-23 Ze-Hua Hu, Rui-Rui Xu, Dan-Hua Shang-Guan, Yang-Jun Ying, Heng Yong, Kang Xing, Xiao-Jun Sun
Neutron resonance cross sections are essential in many nuclear science fields and applications. However, their evaluation and application are extremely complicated. Additionally, the high-frequency, super-wide spectral range of these cross sections cannot be readily approximated by a deep neural network (DNN). To address this issue, we propose a single phase-shift DNN (SPDNN) in which a phase-shift
-
Collectivity at the prolate-oblate transition: The [formula omitted] lifetime of 190W Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 E. Şahin, V. Werner, A.K. Mistry, M. Rudigier, K. Nomura, J. Jolie, N. Pietralla, P.H. Regan, G. Ağgez, H.M. Albers, U. Ahmed, Ö. Aktaş, A. Algora, S. Alhomaidhi, C. Appleton, T. Arıcı, M. Armstrong, A. Banerjee, J. Benito, G. Benzoni, A. Blazhev, P. Boutachkov, A.M. Bruce, B. Cederwall, M.M.R. Chishti, M.L. Cortés, F. Crespi, B. Das, T. Davinson, T. Dickel, M. Doncel, A. Ertoprak, A. Esmaylzadeh,
The neutron-rich rare isotope 190W is discussed as a candidate for a prolate-oblate transitional nucleus with maximum γ-softness. The collectivity of this isotope is assessed for the first time by the measurement of the reduced E2 transition probability of its first 2+ state to the ground state. The experiment employed the FAst TIming Array (FATIMA), comprised of 36 LaBr3(Ce) scintillators, which was
-
Measurements of charged-particle multiplicity dependence of higher-order net-proton cumulants in p + p collisions at [formula omitted] GeV from STAR at RHIC Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 STAR Collaboration, M.I. Abdulhamid, B.E. Aboona, J. Adam, L. Adamczyk, J.R. Adams, I. Aggarwal, M.M. Aggarwal, Z. Ahammed, E.C. Aschenauer, S. Aslam, J. Atchison, V. Bairathi, J.G. Ball Cap, K. Barish, R. Bellwied, P. Bhagat, A. Bhasin, S. Bhatta, S.R. Bhosale, J. Bielcik, J. Bielcikova, J.D. Brandenburg, C. Broodo, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, J. Ceska, I. Chakaberia
We report on the charged-particle multiplicity dependence of net-proton cumulant ratios up to sixth order from s=200 GeV p+p collisions at the Relativistic Heavy Ion Collider (RHIC). The measured ratios C4/C2, C5/C1, and C6/C2 decrease with increased charged-particle multiplicity and rapidity acceptance. Neither the Skellam baselines nor PYTHIA8 calculations account for the observed multiplicity dependence
-
Evolution of the two-neutron configuration from 11Li to 13Li Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 P. André, A. Corsi, A. Revel, Y. Kubota, J. Casal, K. Fossez, J. Gómez-Camacho, G. Authelet, H. Baba, C. Caesar, D. Calvet, A. Delbart, M. Dozono, J. Feng, F. Flavigny, J.-M. Gheller, J. Gibelin, A. Giganon, A. Gillibert, K. Hasegawa, T. Isobe, Y. Kanaya, S. Kawakami, D. Kim, Y. Kiyokawa, M. Kobayashi, N. Kobayashi, T. Kobayashi, Y. Kondo, Z. Korkulu, S. Koyama, V. Lapoux, Y. Maeda, F.M. Marqués, T
In this work we investigate the two-neutron decay of 13Li and of the excited states of 11Li populated via one-proton removal from 14Be and 12Be, respectively. A phenomenological model is used to describe the decay of 11Li and 13Li. While the first one displays important sequential components, the second one appears dominated by the direct two-neutron decay. A microscopic three-body model is used to
-
Searching for |Vcd| through the exclusive decay [formula omitted] within QCD sum rules Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 Hai-Jiang Tian, Yin-Long Yang, Dan-Dan Hu, Hai-Bing Fu, Tao Zhong, Xing-Gang Wu
In this paper, we carry out an investigation into the semileptonic decays Ds+→K0ℓ+νℓ with ℓ=(e,μ) by employing the QCD light-cone sum rules approach. The vector transition form factor (TFF) f+Ds+K0(q2) for Ds+→K0 decay is calculated while considering its next-to-leading order contribution. Subsequently, we briefly introduce the twist-2, 3 kaon distribution amplitudes, which are calculated by using
-
Short-range expansion for the quantum many-body problem Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 Ronen Weiss, Diego Lonardoni, Stefano Gandolfi
In this work we derive a systematic short-range expansion of the many-body wave function. At leading order, the wave function is factorized to a zero-energy s-wave correlated pair and spectator particles, while terms that include energy derivatives and larger orbital angular momentum two-body functions appear at subleading orders. The validity of the expansion is tested for the two-body case, as well