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Opportunities and Open Questions in Modern Beta Decay Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-15 Leendert Hayen
For well over half a century, precision studies of neutron and nuclear β decays have been at the forefront of searches for exotic electroweak physics. Recent advances in nuclear ab initio theory and the widespread use of effective field theories mean that the modern understanding of β decay is going through a transitional phase. This has been propelled by current tensions in the global dataset leading
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Dark Matter Candidates of a Very Low Mass Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-10 Kathryn M. Zurek
We review dark matter (DM) candidates of a very low mass appearing in the window below the traditional weakly interacting massive particle (m χ ≲ 10 GeV) and extending down to m χ ≳ 1 meV, somewhat below the mass limit at which DM becomes wavelike. Such candidates are motivated by hidden sectors such as hidden valleys, which feature hidden forces and rich dynamics, but have evaded traditional accelerator
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Exotic Hadrons at LHCb Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-10 Daniel Johnson, Ivan Polyakov, Tomasz Skwarnicki, Mengzhen Wang
It has been 5 years since the data sample from the LHCb detector, the first experiment optimized for heavy-flavor physics studies at a hadronic collider, was completed. These data led to many major discoveries in exotic hadron spectroscopy, which we review in this article. We supplement the experimental results with a selection of phenomenological interpretations. As the upgraded LHCb detector is expected
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Novel Liquid Argon Time-Projection Chamber Readouts Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-10 Jonathan Asaadi, Daniel A. Dwyer, Brooke Russell
Liquid argon time-projection chambers (LArTPCs) have become a prominent tool for experiments in particle physics. Recent years have yielded significant advances in the techniques used to capture the signals generated by these cryogenic detectors. This article summarizes these novel developments for detection of ionization electrons and scintillation photons in LArTPCs. New methods to capture ionization
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Neutron Skins: Weak Elastic Scattering and Neutron Stars Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-10 Juliette M. Mammei, Charles J. Horowitz, Jorge Piekarewicz, Brendan T. Reed, Concettina Sfienti
The recently completed PREX-2 campaign measured the density distribution of neutrons in the lead nucleus as a function of momentum transfer (the form factor), confirmed a relatively large extent of the neutrons beyond the protons in the nucleus (the neutron skin), and provided a precise determination of the density of protons and neutrons at the center of a heavy nucleus. In turn, the measured form
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Experimentation at a Muon Collider Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-10 Massimo Casarsa, Donatella Lucchesi, Lorenzo Sestini
Experimental activities involving multi-TeV muon collisions are a relatively recent endeavor. The community has limited experience in designing detectors for lepton interactions at center-of-mass energies of 10 TeV and beyond. This review provides a short overview of the machine characteristics and outlines potential sources of beam-induced background that could affect the detector performance. The
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Recent Progress in the Electroweak Structure of Light Nuclei Using Quantum Monte Carlo Methods Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-10 Garrett B. King, Saori Pastore
Nuclei will play a prominent role in searches for physics beyond the Standard Model as the active material in experiments. In order to reliably interpret new physics signals, one needs an accurate model of the underlying nuclear dynamics. In this review, we discuss recent progress made with quantum Monte Carlo approaches for calculating the electroweak structure of light nuclei. We place particular
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Technological Novelties and Scientific Discoveries with the Borexino Experiment Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-08 Gianpaolo Bellini
The Borexino experiment has developed, in its 32 years of activity, techniques and methods that allow for unprecedented radiopurity levels, which continue to be the current state of the art. These pioneering techniques and methods represent a new standard for ultra-low-background physics, a legacy that Borexino leaves to future experiments studying low-energy neutrinos and searching for rare events
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Softening of the hypertriton transverse momentum spectrum in heavy-ion collisions Phys. Lett. B (IF 4.3) Pub Date : 2024-07-08 Dai-Neng Liu, Che Ming Ko, Yu-Gang Ma, Francesco Mazzaschi, Maximiliano Puccio, Qi-Ye Shou, Kai-Jia Sun, Yuan-Zhe Wang
Understanding the properties of hypernuclei helps to constrain the interaction between hyperon and nucleon, which is known to play an essential role in determining the properties of neutron stars. Experimental measurements have suggested that the hypertriton (), the lightest hypernucleus, exhibits a halo structure with a deuteron core encircled by a Λ hyperon at a distance of about 10 fm. This large
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Multiple chiral doublet bands in 104Rh Phys. Lett. B (IF 4.3) Pub Date : 2024-07-06 A. Krakó, D. Sohler, J. Timár, I. Kuti, Q.B. Chen, S.Q. Zhang, J. Meng, K. Starosta, T. Koike, E.S. Paul, D.B. Fossan, C. Vaman
Two new negative-parity bands have been identified in the odd-odd Rh nucleus. According to their experimentally observed properties, they have the same high- configuration as the previously known negative-parity chiral doublet bands. This observation raises the possibility of the existence of multiple chiral doublet bands, MD, in this nucleus. Comparing the properties of the observed bands with results
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Corrigendum to “The complete exterior spacetime of spherical Brans-Dicke stars” [Phys. Lett. B 855 (2024) 138803] Phys. Lett. B (IF 4.3) Pub Date : 2024-07-06 Bertrand Chauvineau, Hoang Ky Nguyen
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Baby skyrmion crystals stabilized by vector mesons Phys. Lett. B (IF 4.3) Pub Date : 2024-07-06 Paul Leask
In this letter we study soliton crystals in the -dimensional analogue model of the -dimensional Adkins–Nappi model of nuclear physics. The baby -Skyrme model studied here is an nonlinear model coupled to a massive vector meson, the -meson. Using recently developed methods in the -dimensional -Skyrme model we are able to construct soliton crystals in this -dimensional baby -Skyrme model. The resulting
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Light and hyper nuclei formation at [formula omitted] 3 GeV Au+Au collisions using Wigner coalescence approach Phys. Lett. B (IF 4.3) Pub Date : 2024-07-05 L.K. Liu, C.L. Hu, X.H. He, S.S. Shi, G.N. Xie
The production of light nuclei and hyper-nuclei in heavy-ion collisions, particularly at high baryon density, is crucial for understanding the dynamical evolution of the collision system and exploring the internal state of nuclear matter of compacted stellar object. Despite being a topic of ongoing debate, an improved theoretical understanding is necessary. In this work, production of light nuclei
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Search for the γ decay of the narrow near-threshold proton resonance in 11B Phys. Lett. B (IF 4.3) Pub Date : 2024-07-05 S. Bottoni, G. Corbari, S. Leoni, B. Fornal, A. Goasduff, S. Capra, D. Mengoni, E. Albanese, S. Ziliani, G. Benzoni, A.M. Sánchez-Benítez, A. Bracco, D. Brugnara, F. Camera, M. Ciemała, N. Cieplicka-Oryńczak, F.C.L. Crespi, J.A. Dueñas, A. Gadea, F. Galtarossa, E. Gamba, A. Gottardo, A. Gozzelino, J. Ha, Ł.W. Iskra, T. Marchi, R. Menegazzo, B. Million, D.R. Napoli, G. Pasqualato, J. Pellumaj, R.M.
The decay of the elusive narrow, near-threshold proton resonance in B was investigated at Laboratori Nazionali di Legnaro (INFN) in a particle- coincidence experiment, using the Li(Li,p) fusion-evaporation reaction and the GALILEO-GALTRACE setup. No clear signature was found for a possible E1 decay to the 1/2, first-excited state of B, predicted by the Shell Model Embedded in the Continuum (SMEC) with
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Full quantum tomography of top quark decays Phys. Lett. B (IF 4.3) Pub Date : 2024-07-04 J.A. Aguilar-Saavedra
Quantum tomography in high-energy physics processes has usually been restricted to the spin degrees of freedom. We address the case of top quark decays , in which the orbital angular momentum () and the spins of and are intertwined into a 54-dimensional density operator. The entanglement between and the or spin is large and could be determined for decays of single top quarks produced at the Large Hadron
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Two-loop contributions to the anomalous chromomagnetic dipole moment of the top quark in two-Higgs-doublet models Phys. Lett. B (IF 4.3) Pub Date : 2024-07-03 Subhadip Bisal
We present the results for the anomalous chromomagnetic moment of a quark at the one-loop and two-loop levels through model-independent parameterizations, considering the external gluon to be off-shell. Then, we consider different types of two-Higgs-doublet models with the momentum transfer of the external gluon, , and 0, for the numerical evaluations thereof for the top quark. We find that the contributions
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Updated Big Bang nucleosynthesis bounds on long-lived particles from dark sectors Phys. Lett. B (IF 4.3) Pub Date : 2024-07-03 J.R. Alves, L. Angel, L. Guedes, R.M.P. Neves, F.S. Queiroz, D.R. da Silva, R. Silva, Y. Villamizar
As electromagnetic showers may alter the abundance of Helium, Lithium, and Deuterium, we can place severe constraints on the lifetime and amount of electromagnetic energy injected by long-lived particles. Considering up-to-date measurements of the light element abundances that point to , , and the baryon-to-photon ratio obtained from the Cosmic Microwave Background data, , we derive upper limits on
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Spectroscopy of N = 50 isotones with the valence-space density matrix renormalization group Phys. Lett. B (IF 4.3) Pub Date : 2024-07-03 A. Tichai, K. Kapás, T. Miyagi, M.A. Werner, Ö. Legeza, A. Schwenk, G. Zarand
The recently proposed combination of the valence-space in-medium similarity renormalization group (VS-IMSRG) with the density matrix renormalization group (DMRG) offers a scalable and flexible many-body approach for strongly correlated open-shell nuclei. We use the VS-DMRG to investigate the low-lying spectroscopy of isotones, which are characteristic for their transition between single-particle and
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Corrigendum to “Measurement of Nuclear Interaction Cross Sections towards Neutron-Skin Thickness Determination” [Physics Letter B 855 (2024) 138780] Phys. Lett. B (IF 4.3) Pub Date : 2024-07-03 Lukas Ponnath
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Searches for New High-Mass Resonances Decaying to Fermions at the LHC Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-02 Barbara Clerbaux, Carl Gwilliam
Accelerator searches for new resonances have a long-standing history of discoveries that have driven advances in our understanding of nature. Since 2010, the Large Hadron Collider (LHC) has probed previously inaccessible energy scales, enabling searches for new heavy resonances predicted by a wide range of theories beyond the Standard Model (BSM). In particular, resonance decays into fermionic final
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Tensions in cosmology: A discussion of statistical tools to determine inconsistencies Phys. Lett. B (IF 4.3) Pub Date : 2024-07-02 Matías Leizerovich, Susana J. Landau, Claudia G. Scóccola
We present a comprehensive analysis of statistical tools for evaluating tensions in cosmological parameter estimates arising from distinct datasets. Focusing on the unresolved Hubble constant () tension, we explore the Pantheon Plus + SH0ES (PPS) compilation, which includes low-redshift Cepheid data from the SH0ES collaboration, along with the latest release of CMB data from the Planck collaboration
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Double-Higgs Production Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-07-01 Loukas Gouskos, Katharine J.C. Leney
A major focus in particle physics has been on understanding the interactions of the Higgs boson. Tremendous progress has been made in determining the strength of the couplings of the Higgs boson to fermions and vector bosons, but its self-interaction has yet to be established. Understanding the Higgs self-coupling and the form of the potential function of the Higgs field will illuminate the process
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Enhancement of the Higgs decay into a Z′ pair in models with U(1)X gauge symmetry Phys. Lett. B (IF 4.3) Pub Date : 2024-07-01 ShivaSankar K.A., Arindam Das, Kei Yagyu
We discuss the Higgs phenomenology in models with a new gauge symmetry including the scenario, where three right-handed neutrinos are inevitably introduced due to the gauge anomaly cancellations. We find that the decay branching ratio of the discovered Higgs boson into a pair of new massive gauge bosons () can significantly be enhanced in the Dirac neutrino case as compared with the Majorana case for
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A modified dyon solution in a non-Abelian gauge model Phys. Lett. B (IF 4.3) Pub Date : 2024-07-01 A.Yu. Loginov
A modified Georgi-Glashow model is considered here, and it is shown that besides the well-known Julia-Zee dyon solution, the model can also have a modified dyon solution. The properties of the modified dyon solution are studied using analytical and numerical methods. A comparative analysis of the modified dyon and the Julia-Zee dyon shows that their properties are significantly different. In particular
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Neutrino oscillations with atmospheric neutrinos at large liquid argon TPCs Phys. Lett. B (IF 4.3) Pub Date : 2024-07-01 Animesh Chatterjee, Albert De Roeck
We propose to study atmospheric neutrino interactions with a unique event topology to distinguish neutrinos and anti-neutrinos using a liquid argon time projection chamber in an experiment such as DUNE. The detection of charged-current 1 proton (CC1P) and charged-current no proton (CC0P) events will allow us to access neutrino oscillation physics complementary to accelerator-based beam neutrinos. Assuming
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Gravitational stress tensor and current at null infinity in three dimensions Phys. Lett. B (IF 4.3) Pub Date : 2024-07-01 H. Adami, M.M. Sheikh-Jabbari, V. Taghiloo
We develop the framework that reveals the intrinsic conserved stress tensor and current associated with the null infinity of a three-dimensional (3) asymptotically flat spacetime. These are, respectively, canonical conjugates of degenerate metric and Ehresmann connection of the boundary Carrollian geometry. Their conservation reproduces the Bondi-mass and angular momentum conservation equations if
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A relation between (2,2m − 1) minimal strings and the Virasoro minimal string Phys. Lett. B (IF 4.3) Pub Date : 2024-06-28 Alicia Castro
We propose a connection between the newly formulated Virasoro minimal string and the well-established minimal string via their dual matrix models by deriving the string equation of the Virasoro minimal string using the expansion of its density of states in powers of . The string equation is expressed as a power series involving double-scaled multicritical matrix models, which are dual to minimal strings
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Alpha radioactivity deep-underground as a probe of axion dark matter Phys. Lett. B (IF 4.3) Pub Date : 2024-06-28 Carlo Broggini, Giuseppe Di Carlo, Luca Di Luzio, Claudio Toni
We propose to investigate the time modulation of radioisotope decays deep underground as a method to explore axion dark matter. In this work, we focus on the -decay of heavy isotopes and develop a theoretical description for the -dependence of -decay half-lives, which enables us to predict the time variation of -radioactivity in response to an oscillating axion dark matter background. To probe this
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Multiplicity fluctuations and rapidity correlations in ultracentral proton-nucleus collisions Phys. Lett. B (IF 4.3) Pub Date : 2024-06-28 Rupam Samanta, Jean-Yves Ollitrault
A collision between a proton and a heavy nucleus at ultrarelativistic energy creates particles whose rapidity distribution is asymmetric, with more particles emitted in the direction of the nucleus than in the direction of the proton. This asymmetry becomes more pronounced as the centrality estimator, defined from the energy deposited in a calorimeter, increases. We argue that for high-multiplicity
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Transverse-momentum-dependent gluon distributions of proton within basis light-front quantization Phys. Lett. B (IF 4.3) Pub Date : 2024-06-27 Hongyao Yu, Zhi Hu, Siqi Xu, Chandan Mondal, Xingbo Zhao, James P. Vary, BLFQ Collaboration
Gluon transverse-momentum dependent distributions (TMDs) are very important for revealing the internal structure of the proton. They correspond to a variety of experiments and are among the major tasks of the future electron-ion colliders. In this paper, we calculate the T-even gluon TMDs at the leading twist within the Basis Light-front Quantization framework. We employ the light-front wave functions
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Axion detection with optomechanical cavities Phys. Lett. B (IF 4.3) Pub Date : 2024-06-27 Clara Murgui, Yikun Wang, Kathryn M. Zurek
We propose a novel technique to search for axions with an optomechanical cavity filled with a material such as superfluid helium. Axion absorption converts a pump laser photon to a photon plus a phonon. The axion absorption rate is enhanced by the high occupation number of coherent photons or phonons in the cavity, allowing our proposal to largely overcome the extremely small axion coupling. The axion
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Transverse structure of the proton beyond leading twist: A light-front Hamiltonian approach Phys. Lett. B (IF 4.3) Pub Date : 2024-06-27 Zhimin Zhu, Siqi Xu, Jiatong Wu, Hongyao Yu, Zhi Hu, Jiangshan Lan, Chandan Mondal, Xingbo Zhao, James P. Vary, BLFQ Collaboration
Within the Basis Light-Front Quantization framework, we systematically investigate the subleading twist (twist-3) transverse-momentum-dependent parton distribution functions (TMDs) of the proton beyond the Wandzura-Wilczek (WW) approximation. The subleading twist TMDs are not independent and can be decomposed into twist-2 and genuine twist-3 terms from the equations of motion. The latter involves quark-quark-gluon
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Spectroscopy of deeply bound orbitals in neutron-rich Ca isotopes Phys. Lett. B (IF 4.3) Pub Date : 2024-06-27 P.J. Li, J. Lee, P. Doornenbal, S. Chen, S. Wang, A. Obertelli, Y. Chazono, J.D. Holt, B.S. Hu, K. Ogata, Y. Utsuno, K. Yoshida, N.L. Achouri, H. Baba, F. Browne, D. Calvet, F. Château, N. Chiga, A. Corsi, M.L. Cortés, A. Delbart, J.-M. Gheller, A. Giganon, A. Gillibert, C. Hilaire, T. Isobe, T. Kobayashi, Y. Kubota, V. Lapoux, H.N. Liu, T. Motobayashi, I. Murray, H. Otsu, V. Panin, N. Paul, W. Rodriguez
The calcium isotopes are an ideal system to investigate the evolution of shell structure and magic numbers. Although the properties of surface nucleons in calcium have been well studied, probing the structure of deeply bound nucleons remains a challenge. Here, we report on the first measurement of unbound states in Ca and Ca, populated from Ca() reactions at a beam energy of around 216 MeV/nucleon
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On the geometry and quantum theory of regular and singular spinors Phys. Lett. B (IF 4.3) Pub Date : 2024-06-27 G. Papadopoulos
We relate the Lounesto classification of regular and singular spinors to the orbits of the group in the space of Dirac spinors. We find that regular spinors are associated with the principal orbits of the spin group while singular spinors are associated with special orbits whose isotropy group is . We use this to clarify some aspects of the classical and quantum theory of spinors restricted to a class
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Probing ultralight scalar, vector and tensor dark matter with pulsar timing arrays Phys. Lett. B (IF 4.3) Pub Date : 2024-06-26 Caner Ünal, Federico R. Urban, Ely D. Kovetz
Pulsar timing arrays (PTAs) are sensitive to oscillations in the gravitational potential along the line-of-sight due to ultralight particle pressure. We calculate the probing power of PTAs for ultralight bosons across all frequencies, from those larger than the inverse observation time to those smaller than the inverse distance to the pulsar. We show that since the signal amplitude grows comparably
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Assessing observational constraints on dark energy Phys. Lett. B (IF 4.3) Pub Date : 2024-06-26 David Shlivko, Paul J. Steinhardt
Observational constraints on time-varying dark energy (, quintessence) are commonly presented on a - plot that assumes the equation of state of dark energy strictly satisfies as a function of the redshift . Recent observations favor a sector of the - plane in which and , suggesting that the equation of state underwent a transition from violating the null energy condition (NEC) at large to obeying it
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Phase shift deep neural network approach for studying resonance cross sections for the 235U(n,f) reaction Phys. Lett. B (IF 4.3) Pub Date : 2024-06-26 Kang Xing, Xiao-Jun Sun, Rui-Rui Xu, Fang-Lei Zou, Ze-Hua Hu, Ji-Min Wang, Xi Tao, Xiao-Dong Sun, Yuan Tian, Zhong-Ming Niu
Due to the complex structures associated with neutron resonance cross sections, their accurate evaluation has received considerable attention in the field of nuclear data research. The traditional R-matrix method still faces some difficulties in evaluating the neutron resonance data, especially in briefly reproducing the high-frequency oscillating cross sections. Recently, the applications of machine
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Exploring scalar contributions with K+ → π+ℓ+ℓ− Phys. Lett. B (IF 4.3) Pub Date : 2024-06-26 G. D'Ambrosio, A.M. Iyer, F. Mahmoudi, S. Neshatpour
The rare kaon decay offers insights into Standard Model (SM) physics and beyond. Driven by vector form factor in the SM, it can also probe non-standard contributions. In this letter we study the scalar contribution, . Using differential decay width and Forward-Backward Asymmetry we propose a simultaneous fit to vector and scalar contributions which is necessary for a consistent analysis. Novel bounds
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Onset of scaling violation in pion and kaon elastic electromagnetic form factors Phys. Lett. B (IF 4.3) Pub Date : 2024-06-26 Zhao-Qian Yao, Daniele Binosi, Craig D. Roberts
Using a symmetry-preserving truncation of the quantum field equations describing hadron properties, parameter-free predictions are delivered for pion and kaon elastic electromagnetic form factors, , thereby unifying them with kindred results for nucleon elastic electromagnetic form factors. Regarding positive-charge states, the analysis stresses that the presence of scaling violations in QCD entails
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Constraining kaon PDFs from Drell-Yan and J/ψ production Phys. Lett. B (IF 4.3) Pub Date : 2024-06-25 Wen-Chen Chang, Jen-Chieh Peng, Stephane Platchkov, Takahiro Sawada
The kaon parton distribution functions (PDFs) are poorly known due to paucity of kaon-induced Drell-Yan data. Nevertheless, these Drell-Yan data suggest a softer valence quark distribution of the kaon compared to that of the pion. We discuss the opportunity to constrain the kaon PDFs utilizing the existing kaon-induced production data. We compare the and cross-section ratio data with calculations based
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Measurement of the VH,H → ττ process with the ATLAS detector at 13 TeV Phys. Lett. B (IF 4.3) Pub Date : 2024-06-25 The ATLAS Collaboration, G. Aad, E. Aakvaag, B. Abbott, K. Abeling, N.J. Abicht, S.H. Abidi, A. Aboulhorma, H. Abramowicz, H. Abreu, Y. Abulaiti, B.S. Acharya, 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, W.S. Ahmed, S. Ahuja, X. Ai, G. Aielli, A
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Location of the neutron drip line for Sn and its impact on r-process abundances Phys. Lett. B (IF 4.3) Pub Date : 2024-06-22 Melvin Storbacka, Chong Qi
Nuclear physical inputs are critical for predicting the abundance of -process elements. Extensive sensitivity studies have recently been performed to gauge the impact of the individual properties of nuclei on the -process. In this work, we investigate the impact of the large uncertainties in the theoretical predictions of the masses of neutron-rich Sn isotopes and the location of the neutron drip line
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Evidence for tWZ production in proton-proton collisions at [formula omitted] TeV in multilepton final states Phys. Lett. B (IF 4.3) Pub Date : 2024-06-21 The CMS Collaboration, A. Hayrapetyan, 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, 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
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First observation of excited states in 120La and its impact on the shape evolution in the A ≈ 120 mass region Phys. Lett. B (IF 4.3) Pub Date : 2024-06-20 P.M. Jodidar, C.M. Petrache, B.F. Lv, E.A. Lawrie, A. Astier, S. Guo, K.K. Zheng, K. Auranen, A.D. Briscoe, T. Grahn, P.T. Greenlees, A. Illana, H. Joukainen, R. Julin, J. Louko, M. Luoma, H. Jutila, J. Ojala, J. Pakarinen, A.M. Plaza, P. Rahkila, P. Ruotsalainen, J. Sarén, A. Tolosa-Delgado, J. Uusitalo, G. Zimba, I. Kuti, A. Krakó, C. Andreoiu, D.T. Joss, R.D. Page, E.A. Cederlöf, A. Ertoprak
Excited states have been observed for the first time in the very neutron-deficient odd-odd nucleus La. The observed rays have been assigned based on coincidences with lanthanum X rays measured with the 3 array and with fusion-evaporation residues measured with the separator. The observed rays form a rotational band which decays to the ground state via a cascade of four low-energy transitions. Based
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The spin alignment of vector mesons with light front quarks Phys. Lett. B (IF 4.3) Pub Date : 2024-06-20 Baochi Fu, Fei Gao, Yu-Xin Liu, Huichao Song
The global spin alignment of the vector meson has been observed in relativistic heavy ion collisions, but its theoretical origin is still on hot debates. Here we propose to apply the light front framework to explain this phenomenon since the light front form explicitly describes the hadron spin including both the quark spin and the orbital angular momentum. After applying the light front spinor, we
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Quintessence and the Higgs portal in the Carroll limit Phys. Lett. B (IF 4.3) Pub Date : 2024-06-20 B. Avila, J. Gamboa, R.B. MacKenzie, F. Méndez, M.B. Paranjape
A cosmological model based on two scalar fields is proposed. The first of these, , has mass , while the second, , is massless. The pair are coupled through a “Higgs portal”. First, we show how the model reproduces the Friedmann equations if the square of the mass of the field is proportional to the cosmological constant and represents the quintessence field. Quantum corrections break the conformal
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Wormholes in the f(R,L,T) theory of gravity Phys. Lett. B (IF 4.3) Pub Date : 2024-06-20 P.H.R.S. Moraes, A.S. Agrawal, B. Mishra
Morris and Thorne developed wormhole solutions in the late 1980s when they discovered a recipe that wormholes must follow for travelers to cross them safely. They describe exotic matter as satisfying , where is the radial pressure and is the energy density of the wormhole. This is a notable characteristic of the General Relativity Theory. The current article discusses traversable wormhole solutions
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Inferring Binary Properties from Gravitational-Wave Signals Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-06-19 Javier Roulet, Tejaswi Venumadhav
This review provides a conceptual and technical survey of methods for parameter estimation of gravitational-wave signals in ground-based interferometers such as Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo. We introduce the framework of Bayesian inference and provide an overview of models for the generation and detection of gravitational waves from compact binary mergers, focusing
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Lambda motion and cluster states of [formula omitted] predicted via neural networks guided microscopic calculation Phys. Lett. B (IF 4.3) Pub Date : 2024-06-19 Jiaqi Tian, Zheng Cheng, Changjian Yu, Mengjiao Lyu, Takayuki Myo, Masahiro Isaka, Hiroshi Toki, Hisashi Horiuchi, Akinobu Doté, Hiroki Takemoto, Niu Wan, Qing Zhao
We investigate the Λ particle motion and cluster states of using a novel multiple cooling approach guided by the Control Neural Networks method (Ctrl.NN). The numerical results are well reproduced, and the Ctrl.NN method shows rapid convergence concerning the set of the basis states in comparison to traditional generator coordinate method (GCM) calculations. Taking advantage of this merit, we calculate
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Skewed generalized parton distributions of proton from basis light-front quantization Phys. Lett. B (IF 4.3) Pub Date : 2024-06-19 Yiping Liu, Siqi Xu, Chandan Mondal, Zhi Hu, Xingbo Zhao, James P. Vary, BLFQ Collaboration
We obtain all the leading-twist quark generalized parton distributions (GPDs) inside the proton at nonzero skewness within the basis light-front quantization framework. We employ the light-front wave functions of the proton from a light-front quantized Hamiltonian in the valence Fock sector consisting of a three-dimensional confinement potential and a one-gluon exchange interaction with fixed coupling
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The shape of the Tz = +1 nucleus 94Pd and the role of proton-neutron interactions on the structure of its excited states Phys. Lett. B (IF 4.3) Pub Date : 2024-06-19 A. Yaneva, S. Jazrawi, M. Mikołajczuk, M. Górska, P.H. Regan, B. Das, H.M. Albers, S. Alhomaidhi, T. Arici, A. Banerjee, G. Benzoni, B. Cederwall, M.M.R. Chishti, D.D. Dao, T. Davinson, A. Gargano, J. Gerl, O. Hall, N. Hubbard, J. Jolie, I. Kojouharov, A.K. Mistry, F. Nowacki, M. Polettini, M. Rudigier, E. Şahin, H. Schaffner, A. Sharma, M. Armstrong, H.J. Wollersheim, P. Boutachkov, T. Dickel, E.
Reduced transition probabilities have been extracted between excited, yrast states in the nucleus Pd. The transitions of interest were observed following decays of the , -keV isomeric state, which was populated following the projectile fragmentation of a Xe primary beam at the GSI Helmholtzzentrum für Schwerionenforschung accelerator facility as part of FAIR Phase-0. Experimental information regarding
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On the universal exceptional structure of world-volume theories in string and M-theory Phys. Lett. B (IF 4.3) Pub Date : 2024-06-18 David Osten
A universal structure of world-volume theories of -BPS branes in string and M-theory in terms of exceptional generalised geometry is observed. Previous constructions are extended in two ways: from internal -dimensional space to full 11- or 10-dimensional spacetimes, by coupling to the tensor hierarchy gauge fields, and from with to and . This is done by a clarification of the role of the tensor hierarchy
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Hawking-Page transition in holographic QCD at finite density Phys. Lett. B (IF 4.3) Pub Date : 2024-06-18 Nelson R.F. Braga, Octavio C. Junqueira
We study the confinement/deconfinement transition of QCD matter for a quark-gluon plasma at finite density using AdS/QCD duality. In order to determine the critical temperature and its dependence on the quark chemical potential, the semi-classical Hawking-Page approach is considered for a charged AdS black hole. The result obtained is consistent with the QCD phase diagram, with the critical temperature
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Fermion states localized on a self-gravitating Skyrmion Phys. Lett. B (IF 4.3) Pub Date : 2024-06-18 Vladimir Dzhunushaliev, Vladimir Folomeev, Jutta Kunz, Yakov Shnir
We investigate self-gravitating solutions of the Einstein-Skyrme theory coupled to spin-isospin Dirac fermions and consider the dependence of the spectral flow on the effective gravitational coupling constant and on the Yukawa coupling. It is shown that the effects of the backreaction of the fermionic mode may strongly deform the configuration. Depending on the choice of parameters, solutions with
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Vortices, topology and time Phys. Lett. B (IF 4.3) Pub Date : 2024-06-18 Altay Etkin, João Magueijo, Farbod-Sayyed Rassouli
We relate physical time with the topology of magnetic field vortices. We base ourselves on a formulation of unimodular gravity where the cosmological constant Λ appears as the canonical dual to a variable which on-shell becomes four-volume time. If the theory is restricted to a topological axionic form (viz. a parity-odd product of an electric and a magnetic field), such a time variable becomes the
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Probing the signature of axions through the quasinormal modes of black holes Phys. Lett. B (IF 4.3) Pub Date : 2024-06-18 Antonio De Felice, Shinji Tsujikawa
The axion-photon coupling allows the existence of a magnetically and electrically charged black hole (BH) solution endowed with a pseudo-scalar hair. For the Reissner-Nordström BH with a given total charge and mass, it is known that the quasinormal modes (QNMs) are independent of the mixture between the magnetic and electric charges due to the presence of electric-magnetic duality. We show that the
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Baryonic screening masses in QCD at high temperature Phys. Lett. B (IF 4.3) Pub Date : 2024-06-18 Leonardo Giusti, Tim Harris, Davide Laudicina, Michele Pepe, Pietro Rescigno
We compute the baryonic screening masses of the nucleon and of its negative parity partner in thermal QCD with massless quarks for a wide range of temperatures, from GeV up to ∼160 GeV. The computation is performed by Monte Carlo simulations of lattice QCD with -improved Wilson fermions by exploiting a recently proposed strategy to study non-perturbatively QCD at very high temperature. Very large spatial
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Einstein-Grisaru-Zanon gravity Phys. Lett. B (IF 4.3) Pub Date : 2024-06-18 Ruben Campos Delgado, Sergei V. Ketov
The leading -correction to the gravitational low-energy effective action of closed (type II) superstring theory in four-spacetime dimensions defines the Einstein-Grisaru-Zanon gravity action that is applied for a calculation of the leading corrections to the Schwarzschild solution and the Hubble function in the Friedmann-Lemaitre-Robertson-Walker universe, in the first order with respect to the effective
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Galaxy Formation in ΛCDM Cosmology Annu. Rev. Nucl. Part. Sci. (IF 9.1) Pub Date : 2024-06-17 Joel R. Primack
This is a golden age for galaxy formation: Existing and especially new telescopes are providing observations that challenge and illuminate rapidly improving theory and simulations. This review describes the formation of the cosmic web and the structure of the dark matter halos that provide the scaffolding of the Universe. It then summarizes how empirical models, semianalytic models, and hydrodynamic
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Gravitational waves from particle decays during reheating Phys. Lett. B (IF 4.3) Pub Date : 2024-06-17 Shinya Kanemura, Kunio Kaneta
Gravitational waves have become an irreplaceable tool for exploring the post-inflationary universe. Their cosmological and astrophysical origins have been attracting numerous attention. In this Letter, we point out a novel source of ultra-high frequency gravitational waves: the decay of particles produced during the reheating era. We highlight the decays of the inflaton and the Higgs bosons in the