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How do mirror charge radii constrain density dependence of the symmetry energy? Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 Bai-Shan Hu
It has recently been suggested that differences in the charge radii of mirror nuclei () are strongly correlated with the neutron-skin thickness () of neutron-rich nuclei and with the slope of the symmetry energy (). To test this assumption, we present ab initio calculations of in Ca and Pb, in CaS, CaAr, ScCa, NiCa, NiCr, and NiFe mirror pairs, and . Employing the recently developed 34 chiral interaction
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Early dark energy and scalarization in a scalar-tensor model Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 H. Mohseni Sadjadi
We present a model in which the Gauss-Bonnet invariant holds the quintessence at a fixed point, respecting an initial symmetry in the radiation-dominated era. This results in an early dark energy that becomes significant around the matter-radiation equality era. However, due to symmetry breaking, scalarization occurs, leading to a rapid reduction in the early dark energy density. The model then quickly
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Nuclear contacts of unstable nuclei Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 Tongqi Liang, Dong Bai, Zhongzhou Ren
Nuclear contact is a key quantity to describe the nucleon-nucleon short-range correlations (SRCs). While they have been determined by electron scattering experiments for selected stable nuclei, nuclear contacts are largely unknown for unstable nuclei. In this work, we study nuclear contacts for a number of nuclei in the vicinity of the doubly magic Sn from the theoretical perspective, with special
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EFT observable stability under NLO corrections through interference revival Phys. Lett. B (IF 4.3) Pub Date : 2024-08-22 Céline Degrande, Matteo Maltoni
We illustrate the importance of interference revival when higher order corrections are included, by presenting LO and NLO differential cross-sections and -factors for three processes that are sensitive to the dimension-6 SMEFT operator : -plus-two-jets () production through Vector Boson Fusion (VBF), leptonic diboson and . We show how lifting the interference suppression at LO, through suitable variables
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Exploring the quintessential influence on shadows of black holes in Finsler-Hayward geometry Phys. Lett. B (IF 4.3) Pub Date : 2024-08-21 Manjunath Malligawad, S.K. Narasimhamurthy, Z. Nekouee
This research aims to shed light on how the quintessential dark energy influences the shadows cast by black holes by considering different kinds of surrounding accretion profiles within the framework of Finsler-Hayward geometry. We explore the impact of the Finsler parameter () and the quintessence parameter () on fundamental properties of the black hole, such as its horizons, photon sphere, and impact
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Roles of boundary and equation-of-motion terms in cosmological correlation functions Phys. Lett. B (IF 4.3) Pub Date : 2024-08-20 Ryodai Kawaguchi, Shinji Tsujikawa, Yusuke Yamada
We revisit the properties of total time-derivative terms as well as terms proportional to the free equation of motion (EOM) in a Schwinger-Keldysh formalism. They are relevant to the correct calculation of correlation functions of curvature perturbations in the context of inflationary Universe. We show that these two contributions to the action play different roles in the operator or the path-integral
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Scaling laws of elastic proton-proton scattering differential cross sections Phys. Lett. B (IF 4.3) Pub Date : 2024-08-20 Cristian Baldenegro, Michał Praszałowicz, Christophe Royon, Anna M. Staśto
We show that elastic scattering differential cross sections as function of the four-momentum transfer square have a universal property, such that the ratio of bump-to-dip positions is constant from the energies of the ISR to the LHC, from tens of GeV and up to the TeV scale. We explore this property to compare the geometrical scaling observed at the ISR with the recently proposed scaling law at the
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Hard probes in isobar collisions as a probe of the neutron skin Phys. Lett. B (IF 4.3) Pub Date : 2024-08-14 Wilke van der Schee, Yen-Jie Lee, Govert Nijs, Yi Chen
We present an estimate of the yield of hard probes expected for collisions of the isobars Ru and Zr at collision energies reachable at RHIC and the LHC. These yields are proportional to the number of binary nucleon-nucleon interactions, which is characteristically different due to the presence of the large neutron skin in Zr. This provides an independent opportunity to measure the difference between
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T-odd transverse momentum dependent gluon fragmentation functions in a spectator model Phys. Lett. B (IF 4.3) Pub Date : 2024-08-13 Xiupeng Xie, Zhun Lu
We present a model calculation of the T-odd transverse momentum dependent (TMD) gluon fragmentation functions for a spin-1/2 hadron. Our model is based on the postulation that a time-like off-shell gluon can fragment into a hadron and a single spectator particle, which is considered to be on-shell. We consider the effect of the gluon exchange to calculate all necessary one-loop diagrams for the gluon-gluon
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Determining the CP property of [formula omitted] coupling via a novel jet substructure observable Phys. Lett. B (IF 4.3) Pub Date : 2024-08-13 Zhite Yu, Kirtimaan A. Mohan, C.-P. Yuan
Determining the property of the Higgs boson is important for a precision test of the Standard Model as well as for the search for new physics. We propose a novel jet substructure observable based on the azimuthal anisotropy in a linearly polarized gluon jet that is produced in association with a Higgs boson at hadron colliders, and demonstrate that it provides a new -odd observable for determining
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Generic predictions for primordial perturbations and their implications Phys. Lett. B (IF 4.3) Pub Date : 2024-08-13 Mohit K. Sharma, M. Sami, David F. Mota
We introduce a novel framework for studying small-scale primordial perturbations and their cosmological implications. The framework uses a deep reinforcement learning to generate scalar power spectrum profiles that are consistent with current observational constraints. The framework is shown to predict the abundance of primordial black holes and the production of secondary induced gravitational waves
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Negative radiation pressure in the abelian Higgs model Phys. Lett. B (IF 4.3) Pub Date : 2024-08-13 Dominik Ciurla
Interactions of small-amplitude monochromatic plane waves with domain walls in (1+1) dimensional abelian Higgs model with a sextic potential were studied. The effective force exerted on a domain wall was derived from a linearized equation and compared with numerical simulations of the original model. It was shown that the domain walls always accelerate in one direction, regardless of the direction
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Exploring the truth and beauty of theory landscapes with machine learning Phys. Lett. B (IF 4.3) Pub Date : 2024-08-12 Konstantin T. Matchev, Katia Matcheva, Pierre Ramond, Sarunas Verner
Theoretical physicists describe nature by i) building a theory model and ii) determining the model parameters. The latter step involves the dual aspect of both fitting to the existing experimental data and satisfying abstract criteria like beauty, naturalness, etc. We use the Yukawa quark sector as a toy example to demonstrate how both of those tasks can be accomplished with machine learning techniques
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Long-range near-side correlation in e+e− collisions at 183-209 GeV with ALEPH archived data Phys. Lett. B (IF 4.3) Pub Date : 2024-08-12 Yu-Chen Chen, Yi Chen, Anthony Badea, Austin Baty, Gian Michele Innocenti, Marcello Maggi, Christopher McGinn, Michael Peters, Tzu-An Sheng, Jesse Thaler, Yen-Jie Lee
The first measurement of two-particle angular correlations for charged particles with LEP-II data is presented. The study is performed using archived hadronic data collected by ALEPH at center-of-mass energies up to 209 GeV, above the production threshold, which provide access to unprecedented charged-particle multiplicities and more complex color-string configurations if compared to previous measurements
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Coupled channels analysis of 8He+4He scattering and resonant behaviour Phys. Lett. B (IF 4.3) Pub Date : 2024-08-12 Y. Kucuk, N. Keeley, M. Freer, I. Boztosun
Previously measured elastic scattering and two-neutron transfer angular distributions for He scattered from a He target [Phys Lett. B 75, 58-62, 2017] are analysed using the coupled reaction channels (CRC) formalism and the effect of 1, 2 and 4-neutron transfers on both the elastic scattering and He + He channels is examined. The CRC calculations find that 1 and 2 transfers are the dominant processes
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Cotton gravity is not predictive Phys. Lett. B (IF 4.3) Pub Date : 2024-08-09 Gérard Clément, Khireddine Nouicer
It is well known that the theory of Cotton gravity proposed by Harada is trivially solved by all isotropic and homogeneous cosmologies. We show that this under-determination is more general. More precisely, the degree of arbitrariness in the solutions increases with the degree of symmetry. The inverse problem of finding the matter source generating a given spacetime geometry is similarly indeterminate
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Corrigendum to “Stellar weak-interaction rates for rp-process waiting-point nuclei from projected shell model” [Phys. Lett. B 848 (2024) 138338] Phys. Lett. B (IF 4.3) Pub Date : 2024-08-09 Zi-Rui Chen, Long-Jun Wang
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Small systems and the single-hit approximation in the AMY parton cascade Alpaca Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 Robin Törnkvist, Korinna Zapp
Understanding how momentum anisotropies arise in small collision systems is important for a quantitative understanding of collectivity in terms of QCD dynamics in small and large collision systems. In this letter we present results for small collision systems from the newly developed parton cascade , which faithfully encodes the AMY effective kinetic theory. reproduces quantitatively previously known
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Energy-dependent intrinsic time delay of gamma-ray bursts on testing Lorentz invariance violation Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 Hanlin Song, Bo-Qiang Ma
High-energy photons of gamma-ray bursts (GRBs) might be emitted at different intrinsic times with energy dependence at the source. In this letter, we expand the model from previous works on testing the Lorentz Invariance Violation (LV) with the observed GRB data from the Fermi Gamma-ray Space Telescope. We reanalyze the previous data with the full Bayesian parameter estimation method and get consistent
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Nicolai maps for super Yang–Mills on the light cone Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 Olaf Lechtenfeld
We construct Nicolai maps for supersymmetric Yang–Mills theory in four and ten spacetime dimensions in the light-cone gauge, where the elimination of non-propagating degrees of freedom causes nonlocal and four-fermi interactions in the Lagrangian. The presence of the latter used to be an obstruction to the Nicolai map, which has recently been overcome at the price of quantum corrections to the map
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Improving probes of hAA coupling in the Type-X two Higgs doublet model scenario: The crucial role of τ-jet charge identification Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 Biswarup Mukhopadhyaya, Sirshendu Samanta, Tousik Samui, Ritesh K. Singh
The exotic decay modes of the already discovered 125-GeV scalar into a pair of light pseudoscalars are a good probe of those new physics scenarios where such pseudoscalars exist. Searches in the mass region where the pseudoscalar () is lighter than 62.5 GeV have yielded null findings so far. No search has yet examined GeV where the cross section is suppressed by the off-shell pseudoscalar. We point
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Universality of the thermodynamics of a quantum-mechanically radiating black hole departing from thermality Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 Christian Corda, Carlo Cafaro
Mathur and Mehta won the third prize in the 2023 Gravity Research Foundation Essay Competition for proving the universality of black hole (BH) thermodynamics. Specifically, they demonstrated that any Extremely Compact Object (ECO) must have the same BH thermodynamic properties regardless of whether or not the ECO possesses an event horizon. The result is remarkable, but it was obtained under the approximation
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Dymnikova black hole from an infinite tower of higher-curvature corrections Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 R.A. Konoplya, A. Zhidenko
Recently, in , it was demonstrated that various regular black hole metrics can be derived within a theory featuring an infinite number of higher curvature corrections to General Relativity. Moreover, truncating this infinite series at the first few orders already yields a reliable approximation of the observable characteristics of such black holes . Here, we further establish the existence of another
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Inflation scenario in a non-minimal f(Q) gravity model Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 S. Davood Sadatian, S. Mohamad Reza Hosseini
In the context of gravity, cosmological inflation takes a different turn. gravity is a modified theory of gravity, where the Lagrangian is a function of the non-metricity scalar . gravity theory is part of an extensive class of modified gravity theories designed to explain the accelerated expansion of the universe without the requirement for dark energy. In this paper, we study the modified gravity
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Locating quark-antiquark string breaking in QCD through chiral symmetry restoration and Hawking-Unruh effect Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 Wei Kou, Xurong Chen
The relationship between QCD and the string model offers a valuable perspective for exploring the interaction potential between quarks. In this study, we investigate the restoration of chiral symmetry in connection with the Unruh effect experienced by accelerating observers. Utilizing the Schwinger model, we analyze the critical point at which the string or chromoelectric flux tube between quark-antiquarks
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Exploring loop-induced first-order electroweak phase transition in the Higgs effective field theory Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 Ricardo R. Florentino, Shinya Kanemura, Masanori Tanaka
The nearly aligned Higgs Effective Field Theory (naHEFT) is based on the general assumption: all deviations in the Higgs boson couplings are originated from quantum one-loop effects of new particles that are integrated out. If the new particles integrated out have the same non-decoupling property, physics of the electroweak symmetry breaking can be then described by several parameters in the naHEFT
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Search for pair-produced higgsinos decaying via Higgs or Z bosons to final states containing a pair of photons and a pair of b-jets with the ATLAS detector Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 The ATLAS Collaboration, G. Aad, B. Abbott, K. Abeling, N.J. Abicht, S.H. Abidi, A. Aboulhorma, H. Abramowicz, H. Abreu, Y. Abulaiti, A.C. Abusleme Hoffman, B.S. Acharya, C. Adam Bourdarios, L. Adamczyk, L. Adamek, 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, W.S. Ahmed, S. Ahuja
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The boundary proposal Phys. Lett. B (IF 4.3) Pub Date : 2024-08-08 Bjoern Friedrich, Arthur Hebecker
One of the leading ideas for the beginning of the Universe is the Hartle-Hawking ‘No-Boundary Proposal.’ Since the Cobordism Conjecture claims that any spacetime allows for a dynamical boundary, we suggest that one may equally well consider a ‘Boundary Proposal’. Specifically, the corresponding euclidean instanton is a sphere with two holes around north and south pole cut out. Analogously to the Hartle-Hawking
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A universal splitting of tree-level string and particle scattering amplitudes Phys. Lett. B (IF 4.3) Pub Date : 2024-08-07 Qu Cao, Jin Dong, Song He, Canxin Shi
We propose a new splitting behavior of tree-level string/particle amplitudes for massless scalars, gluons and gravitons. We identify certain subspaces in the space of Mandelstam variables, where the universal Koba-Nielsen factor splits into two parts (each with an off-shell leg). Both open- and closed-string amplitudes with Parke-Taylor factors naturally factorize into two stringy , which implies the
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Kinetic preheating after α-attractor inflation Phys. Lett. B (IF 4.3) Pub Date : 2024-08-07 Peter Adshead, John T. Giblin Jr., Reid Pfaltzgraff-Carlson
We study preheating via kinetic couplings after dilaton-axion -attractor inflation. We focus on E-model -attractor driven inflation where the inflaton is kinetically coupled to an ultralight axion. In this class of models, the kinetic coupling is related to the form of the potential, and once the amplitude of the scalar curvature spectrum as well as the tensor-to-scalar ratio are specified, the model
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Einstein-(complex)-Maxwell static boson stars in AdS Phys. Lett. B (IF 4.3) Pub Date : 2024-08-06 Carlos Herdeiro, Hyat Huang, Jutta Kunz, Eugen Radu
We consider a model with two real Maxwell fields (or equivalently, a complex Maxwell field) minimally coupled to Einstein's gravity with a negative cosmological constant in four spacetime dimensions. Assuming a specific harmonic dependence of the vector fields, we show the existence of asymptotically anti-de Sitter (AdS) self-gravitating boson-star–like solitonic solutions, which are static and axially
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Accessing the speed of sound in relativistic ultracentral nucleus-nucleus collisions using the mean transverse momentum Phys. Lett. B (IF 4.3) Pub Date : 2024-08-06 Fernando G. Gardim, Andre V. Giannini, Jean-Yves Ollitrault
It has been argued that the speed of sound of the strong interaction at high temperature can be measured using the variation of the mean transverse momentum with the particle multiplicity in ultracentral heavy-ion collisions. We test this correspondence by running hydrodynamic simulations at zero impact parameter with several equations of state, at several colliding energies from 0.2 TeV to 15 TeV
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An S3 × S3 bundle over S4 and new supergravity solutions Phys. Lett. B (IF 4.3) Pub Date : 2024-08-03 Ali Imaanpur
The metric of can be written as an -instanton bundle over . It is also possible to write it differently as an anti-instanton bundle. We use this observation to construct an instanton–anti-instanton, , bundle over . We show that this 10d manifold admits two Einstein metrics. We then rewrite the metric to isolate two directions of the fibre and dimensionally reduce along them to get an eight dimensional
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Duality origami: Emergent ensemble symmetries in holography and Swampland Phys. Lett. B (IF 4.3) Pub Date : 2024-08-02 Meer Ashwinkumar, Jacob M. Leedom, Masahito Yamazaki
We discuss the interrelations between several ideas in quantum gravity – holography, the Swampland, and the concept of ensemble averaging. To do so, we study ensemble averages of Narain-type theories associated with general even quadratic forms and their holographic duals. We establish the emergence of global symmetries and discuss their consistency with conjectures forbidding such symmetries. We also
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Four-loop splitting functions in QCD – The quark-to-gluon case Phys. Lett. B (IF 4.3) Pub Date : 2024-08-02 G. Falcioni, F. Herzog, S. Moch, A. Pelloni, A. Vogt
We present the even- moments of the fourth-order (NLO) contribution to the quark-to-gluon splitting function in perturbative QCD. These moments, obtained by analytically computing off-shell operator matrix elements for a general gauge group, agree with all known results, in particular with the moments derived before from structure functions in deep-inelastic scattering. Using the new moments and the
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Connecting tribimaximal and bitrimaximal mixings Phys. Lett. B (IF 4.3) Pub Date : 2024-08-02 Carlos Alvarado, Janelly Bautista, Alexander J. Stuart
In this paper, we study the connection between the tribimaximal and bitrimaximal mixing patterns. In doing so, we are forced to work in a non-diagonal charged lepton basis. This leads to several relations that must hold between the lepton mixing angles. After a short discussion, we analyze the underlying flavor symmetry responsible for this prediction. Finally, we add CP violation to bitrimaximal mixing
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Ab initio framework for nuclear scattering and reactions induced by light projectiles Phys. Lett. B (IF 4.3) Pub Date : 2024-08-02 Konstantinos Kravvaris, Sofia Quaglioni, Guillaume Hupin, Petr Navrátil
A quantitative and predictive microscopic theoretical framework that can describe reactions induced by particles (He nuclei) and heavier projectiles is currently lacking. Such a framework would contribute to reducing uncertainty in the modeling of stellar evolution and nucleosynthesis and provide the basis for achieving a comprehensive understanding of the phenomenon of nuclear clustering (the organization
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Thermodynamic stability versus chaos bound violation in D-dimensional RN black holes: Angular momentum effects and phase transitions Phys. Lett. B (IF 4.3) Pub Date : 2024-08-02 Yu-Qi Lei, Xian-Hui Ge, Surojit Dalui
We compute the Lyapunov exponents for test particles orbiting in unstable circular trajectories around D-dimensional Reissner-Nordström (RN) black holes, scrutinizing instances of the chaos bound violation. Notably, we discover that an increase in particle angular momentum exacerbates the breach of the chaos bound. Our research centrally investigates the correlation between black hole thermodynamic
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Embedding the ΛCDM framework in non-minimal f(Q) gravity with matter-coupling Phys. Lett. B (IF 4.3) Pub Date : 2024-08-02 N.S. Kavya, V. Venkatesha
In exploring the dynamics of the Universe, modified gravity theories offer an alternative explanation for dark energy. Although the ΛCDM model has served as a foundational description for understanding the Universe, it also has its limitations. Our primary objective in this study is to overcome these shortcomings and reconstruct the ΛCDM Universe. We aim to achieve this by embedding the ΛCDM scenario
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Renormalization of the primordial inflationary power spectra Phys. Lett. B (IF 4.3) Pub Date : 2024-08-02 Silvia Pla, Ben A. Stefanek
It has been suggested that the effects of renormalization significantly reduce the amplitude of the inflationary spectra at scales measurable in the cosmic microwave background. Via a gauge-invariant analysis, we compute the renormalized scalar and tensor power spectra and follow their evolution in an inflating universe that undergoes a transition to an FRW phase with a growing horizon. For perturbations
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Axion dark matter from heavy quarks Phys. Lett. B (IF 4.3) Pub Date : 2024-07-31 Mohammad Aghaie, Giovanni Armando, Angela Conaci, Alessandro Dondarini, Peter Maták, Paolo Panci, Zuzana Šinská, Robert Ziegler
We propose simple scenarios where the observed dark matter abundance arises from decays and scatterings of heavy quarks through freeze-in of an axion-like particle with mass in the range. These models can be tested by future X-ray telescopes, and in some cases will be almost entirely probed by searches for two-body decays at NA62. As a byproduct, we discuss the cancellation of IR divergencies in flavor-violating
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Triaxial shape of the one-proton emitter 149Lu Phys. Lett. B (IF 4.3) Pub Date : 2024-07-31 Qi Lu, Kai-Yuan Zhang, Shi-Sheng Zhang
We revisit the proton emitter Lu utilizing the recently developed triaxial relativistic Hartree-Bogoliubov theory in continuum (TRHBc). By incorporating the microscopic nuclear structure properties from the TRHBc theory into the WKB approximation, we successfully reproduce the measured proton-emission half-life of Lu within experimental uncertainties. A triaxial ground state characterized by () has
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The muli-component modified KP hierarchy from modified BKP hierarchy Phys. Lett. B (IF 4.3) Pub Date : 2024-07-31 Huizhan Chen, Song Li
In this paper, we have considered a special bosonization on muli-component modified BKP hierarchy. The generators of Clifford algebra are rearranged into charged free fermions and twisted neutral free fermions to obtain the fermionic form of the multi-component modified BKP hierarchy. After using the -component boson-fermion correspondence on the multi-component modified BKP hierarchy, it is found
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Primordial non-Gaussianity as a saviour for PBH overproduction in SIGWs generated by pulsar timing arrays for Galileon inflation Phys. Lett. B (IF 4.3) Pub Date : 2024-07-31 Sayantan Choudhury, Kritartha Dey, Ahaskar Karde, Sudhakar Panda, M. Sami
We investigate the explicit role of negative local non-Gaussianity, , in suppressing the abundance of primordial black holes (PBHs) in the single-field model of Galileon inflation. PBH formation requires significantly enhancing the scalar power spectrum, which greatly affects their abundance. The associated frequencies in the nHz regime are also sensitive to the generation of scalar-induced gravitational
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Probing SUSY at gravitational wave observatories Phys. Lett. B (IF 4.3) Pub Date : 2024-07-31 Stefan Antusch, Kevin Hinze, Shaikh Saad, Jonathan Steiner
Under the assumption that the recent pulsar timing array evidence for a stochastic gravitational wave (GW) background at nanohertz frequencies is generated by metastable cosmic strings, we analyze the potential of present and future GW observatories for probing the change of particle degrees of freedom caused, e.g., by a supersymmetric (SUSY) extension of the Standard Model (SM). We find that signs
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Unimodular quadratic gravity and the cosmological constant Phys. Lett. B (IF 4.3) Pub Date : 2024-07-31 Alberto Salvio
Unimodular gravity addresses the cosmological constant (CC) problem, explaining why such constant is not at least as large as the largest particle mass scale, but classically it is indistinguishable from ordinary gravity. Conversely, quantum physics may give us a way to distinguish the two theories. Thus, here the unimodular constraint is imposed on a non-perturbative and background-independent quantum
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Topological classes of thermodynamics of the rotating charged AdS black holes in gauged supergravities Phys. Lett. B (IF 4.3) Pub Date : 2024-07-31 Xiao-Dan Zhu, Di Wu, Dan Wen
In this paper, we investigate the topological numbers of rotating charged AdS black holes in both four- and five-dimensional gauged supergravity theories. Our analysis is conducted within the framework of the thermodynamical topological approach to black holes, utilizing the generalized off-shell Helmholtz free energy. We demonstrate that the number of rotation parameters plays a significant role in
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Causality and stability in relativistic hydrodynamic theory - a choice to be endured Phys. Lett. B (IF 4.3) Pub Date : 2024-07-31 Sayantani Bhattacharyya, Sukanya Mitra, Shuvayu Roy
In this work, it has been indicated that the key features requisite for preserving causality and stability of the popularly existing relativistic hydrodynamic theories, can be translated into each other. It has been shown here, that a generic ‘fluid frame transformation’ including all orders of gradient corrections can recast a stable-causal hydrodynamic theory that (i) only includes fundamental fluid
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Limits on an improved action for contact effective field theory in two-body systems Phys. Lett. B (IF 4.3) Pub Date : 2024-07-30 Lorenzo Contessi, Manuel Pavon Valderrama, Ubirajara van Kolck
We consider a possible resummation of subleading effects in two-body systems with a large scattering length as described by a short-range effective field theory (EFT). In particular, we investigate the consequences of a resummation of part of the range corrections. Explicit calculations of the two-body phase shifts and charge form factor indicate that, except for extreme choices, resummations do not
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Gluon shadowing in nuclei and the role of the [formula omitted] state in the coherent photoproduction of J/ψ in nucleus-nucleus collisions Phys. Lett. B (IF 4.3) Pub Date : 2024-07-30 Agnieszka Łuszczak, Wolfgang Schäfer
In this brief note, we confront our results on diffractive photoproduction of mesons with the putative gluon shadowing ratio defined as , where is the result in impulse approximation. Building on our earlier description of the process in the color-dipole approach, where we took into account the rescattering of states only, we demonstrate that the inclusion of -Fock states improves the description at
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Investigating the composition of the K[formula omitted] state with π±K[formula omitted] correlations at the LHC Phys. Lett. B (IF 4.3) Pub Date : 2024-07-30 ALICE Collaboration, S. Acharya, D. Adamová, G. Aglieri Rinella, L. Aglietta, M. Agnello, N. Agrawal, Z. Ahammed, S. Ahmad, S.U. Ahn, I. Ahuja, A. Akindinov, 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, M.N. Anaam, C. Andrei, N. Andreou, A. Andronic
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Trapped early dark energy Phys. Lett. B (IF 4.3) Pub Date : 2024-07-30 Hao Wang, Yun-Song Piao
As a prospective resolution of the Hubble tension, early dark energy (EDE) suffers from the coincidence problem, why EDE is active just at matter-radiation equality (equivalently why the slope of EDE potential is required to approximately equal to the Hubble parameter at that time). In this paper we present a dark-matter-trapped EDE mechanism, by which the bound on the slope of EDE potential can be
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Anisotropic dark energy stars within vanishing complexity factor formalism: Hydrostatic equilibrium, radial oscillations, and observational implications Phys. Lett. B (IF 4.3) Pub Date : 2024-07-30 Grigoris Panotopoulos, Ángel Rincón, Ilídio Lopes
We investigate the structure and radial oscillations of anisotropic compact stars composed of dark energy, using the vanishing complexity factor formalism within general relativity. This novel approach establishes a direct link between the energy density and anisotropic factor, providing a robust framework for studying these exotic stellar objects. Employing an Extended Chaplygin Gas equation of state
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Precision mass measurements in the zirconium region pin down the mass surface across the neutron midshell at N = 66 Phys. Lett. B (IF 4.3) Pub Date : 2024-07-30 M. Hukkanen, W. Ryssens, P. Ascher, M. Bender, T. Eronen, S. Grévy, A. Kankainen, M. Stryjczyk, O. Beliuskina, Z. Ge, S. Geldhof, M. Gerbaux, W. Gins, A. Husson, D.A. Nesterenko, A. Raggio, M. Reponen, S. Rinta-Antila, J. Romero, A. de Roubin, V. Virtanen, A. Zadvornaya
Precision mass measurements of Y, Zr, Nb, and Mo have been performed with the JYFLTRAP double Penning trap mass spectrometer at the Ion Guide Isotope Separator On-Line facility. The order of the long-lived states in Nb was unambiguously established. The trend in two-neutron separation energies around the neutron midshell appeared to be steeper with respect to the Atomic Mass Evaluation 2020 extrapolations
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The quasilocal energy and thermodynamic first law in accelerating AdS black holes Phys. Lett. B (IF 4.3) Pub Date : 2024-07-30 Wontae Kim, Mungon Nam, Sang-Heon Yi
We scrutinize the conserved energy of an accelerating AdS black hole by employing the off-shell quasilocal formalism, which amalgamates the ADT formalism with the covariant phase space approach. In the presence of conical singularities in the accelerating black hole, the energy expression is articulated through the surface term derived from our formalism. The essence of our analysis of the quasilocal
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Macdonald polynomials for super-partitions Phys. Lett. B (IF 4.3) Pub Date : 2024-07-29 Dmitry Galakhov, Alexei Morozov, Nikita Tselousov
We discuss generalization of famous Macdonald polynomials for the case of super-Young diagrams that contain half-boxes on the equal footing with full boxes. These super-Macdonald polynomials are polynomials of extended set of variables: usual variables are accompanied by anti-commuting Grassmann variables . Starting from recently defined super-Schur polynomials and exploiting orthogonality relations
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Mapping the sources of CP violation in neutrino oscillations from the seesaw mechanism Phys. Lett. B (IF 4.3) Pub Date : 2024-07-29 Zhi-zhong Xing
We present the first complete calculation of the Jarlskog invariant, a working measure of the strength of CP violation in the flavor oscillations of three light neutrino species, with the help of a full Euler-like block parametrization of the flavor structure in the canonical seesaw mechanism. We find that this invariant depends on 240 linear combinations of the 6 original phase parameters that are
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Reissner-Nordström dyonic black holes with gauged scalar hair Phys. Lett. B (IF 4.3) Pub Date : 2024-07-29 Carlos Herdeiro, Eugen Radu, Yakov Shnir
For gauged scalar fields minimally coupled to Einstein-Maxwell theory, the Mayo-Bekenstein no-hair theorem can be circumvented when including appropriate scalar self-interactions, allowing static, electrically charged black holes to be endowed with (Abelian) gauged scalar hair. Here we show these spherically symmetric solutions can be extended to include a magnetic charge in a model with scalar multiplets
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Black holes, warp drives, and energy conditions Phys. Lett. B (IF 4.3) Pub Date : 2024-07-29 Remo Garattini, Kirill Zatrimaylov
Following the work of H. Ellis, we study warp drives in the gravitational field of a Schwarzschild black hole. We find that as long as the warp drive crosses the black hole horizon at a subluminal speed, the horizon would be effectively absent inside the warp bubble. Moreover, we discover that the black hole's gravitational field can alleviate the violations of the weak energy condition (WEC) and the
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Final parsec problem of black hole mergers and ultralight dark matter Phys. Lett. B (IF 4.3) Pub Date : 2024-07-29 Hyeonmo Koo, Dongsu Bak, Inkyu Park, Sungwook E. Hong, Jae-Weon Lee
When two galaxies merge, they often produce a supermassive black hole binary (SMBHB) at their center. Numerical simulations with stars and cold dark matter show that SMBHBs typically stall out at a distance of a few parsecs apart and take billions of years to coalesce. This is known as the final parsec problem. We suggest that ultralight dark matter (ULDM) halos around SMBHBs can generate dark matter