Physics Letters B最新文献_第8页

Dipole response in deformed halo nuclei 42Mg and 44Mg 变形晕核42Mg和44Mg的偶极子响应

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2026-02-07 DOI: 10.1016/j.physletb.2026.140264

X.F. Jiang , Z.Z. Li , X.W. Sun , J. Meng

引用次数: 0

Generalisations of the Russo-Townsend formulation Russo-Townsend公式的推广

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2026-02-10 DOI: 10.1016/j.physletb.2026.140258

Sergei M. Kuzenko, Jonah Ruhl

{"title":"Generalisations of the Russo-Townsend formulation","authors":"Sergei M. Kuzenko, Jonah Ruhl","doi":"10.1016/j.physletb.2026.140258","DOIUrl":"10.1016/j.physletb.2026.140258","url":null,"abstract":"<div><div>As a generalisation of the recent construction by Russo and Townsend, we propose a new approach to generate <span><math><mrow><mi>U</mi><mo>(</mo><mn>1</mn><mo>)</mo></mrow></math></span> duality-invariant models for nonlinear electrodynamics. It is based on the use of two building blocks: (i) a fixed (but otherwise arbitrary) model for self-dual nonlinear electrodynamics with Lagrangian <em>L</em>(<em>F<sub>μν</sub></em>; <em>g</em>) depending on a duality-invariant parameter <em>g</em>; and (ii) an arbitrary potential <em>W</em>(<em>ψ</em>), with <em>ψ</em> an auxiliary scalar field. It turns out that the model <span><math><mrow><mi>L</mi><mrow><mo>(</mo><msub><mi>F</mi><mrow><mi>μ</mi><mi>ν</mi></mrow></msub><mo>;</mo><mi>ψ</mi><mo>)</mo></mrow><mo>=</mo><mi>L</mi><mrow><mo>(</mo><msub><mi>F</mi><mrow><mi>μ</mi><mi>ν</mi></mrow></msub><mo>;</mo><mi>ψ</mi><mo>)</mo></mrow><mo>+</mo><mi>W</mi><mrow><mo>(</mo><mi>ψ</mi><mo>)</mo></mrow></mrow></math></span> leads to a self-dual theory for nonlinear electrodynamics upon elimination of <em>ψ</em>. As an illustration, we work out two examples in which the seed Lagrangian <em>L</em>(<em>F<sub>μν</sub></em>; <em>g</em>) corresponds to the Born-Infeld model and two particular potentials <em>W</em>(<em>ψ</em>) are chosen such that integrating out <em>ψ</em> gives: (i) the ModMaxBorn theory; and (ii) the ModMax theory. We also briefly discuss supersymmetric generalisations of the proposed formulation.</div><div><em>To the memory of Kelly Stelle</em></div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"874 ","pages":"Article 140258"},"PeriodicalIF":4.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146152807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of anomalous HHH coupling on the decay H → Z Z* →  4 charged leptons 异常HHH耦合对H→Z Z*→4带电轻子衰变的影响

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2026-01-18 DOI: 10.1016/j.physletb.2026.140176

Pankaj Agrawal , Biswajit Das

{"title":"Effect of anomalous HHH coupling on the decay H → Z Z* →  4 charged leptons","authors":"Pankaj Agrawal , Biswajit Das","doi":"10.1016/j.physletb.2026.140176","DOIUrl":"10.1016/j.physletb.2026.140176","url":null,"abstract":"<div><div>We have studied the effect of anomalous <em>HHH</em> coupling in the <em>κ</em>-framework for the process <em>H</em> → <em>Z</em> <em>Z</em>* →  4 charged leptons by computing the electroweak corrections to it. The results for the <em>HHH</em> coupling scaling are gauge invariant. We have computed the results for <span><math><mrow><mi>H</mi><mo>→</mo><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></math></span> and <span><math><mrow><mi>H</mi><mo>→</mo><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup></mrow></math></span> processes. The corrections for both processes depend on the input parameter scheme. In the <em>G<sub>F</sub></em> scheme, the electroweak corrections are about 1.26% for the <span><math><mrow><mi>H</mi><mo>→</mo><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></math></span> and about 0.25% for the <span><math><mrow><mi>H</mi><mo>→</mo><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup></mrow></math></span> process. However changing the <em>κ<sub>HHH</sub></em> from 4 to <span><math><mrow><mo>−</mo><mn>6</mn></mrow></math></span>, the corrections vary from less than 1% to about <span><math><mrow><mo>−</mo><mn>12</mn><mo>%</mo></mrow></math></span>. We have plotted a number of kinematic distributions. The corrections over most of the phase space regions are similar. These large corrections can be used to put a bound on the <em>HHH</em> coupling. This can help in determining the structure of the Higgs potential.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"874 ","pages":"Article 140176"},"PeriodicalIF":4.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the interaction between Ξ baryons and light mesons via femtoscopy at the LHC 大型强子对撞机中Ξ重子和光介子相互作用的飞镜研究

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2026-02-02 DOI: 10.1016/j.physletb.2026.140227

{"title":"Study of the interaction between Ξ baryons and light mesons via femtoscopy at the LHC","authors":"","doi":"10.1016/j.physletb.2026.140227","DOIUrl":"10.1016/j.physletb.2026.140227","url":null,"abstract":"<div><div>Meson-baryon systems with strangeness content provide a unique laboratory for investigating the strong interaction and testing theoretical models of hadron structure and dynamics. In this work, the measured correlation functions for oppositely charged Ξ-K and <span><math><mrow><mstyle><mi>Ξ</mi></mstyle><mo>−</mo><mi>π</mi></mrow></math></span> pairs obtained in high-multiplicity pp collisions at <span><math><mrow><msqrt><mi>s</mi></msqrt><mspace></mspace><mo>=</mo><mspace></mspace><mn>13</mn></mrow></math></span> TeV at the LHC are presented. For the first time, high-precision data on the Ξ-K interaction are delivered at small relative momenta. The scattering lengths, extracted via the Lednický–Lyuboshits expression of the pair wavefunction, indicate a repulsive and a shallow attractive strong interaction for the Ξ-K and <span><math><mrow><mstyle><mi>Ξ</mi></mstyle><mo>−</mo><mi>π</mi></mrow></math></span> systems, respectively. The Ξ(1620) and Ξ(1690) states are observed in the <span><math><mrow><mstyle><mi>Ξ</mi></mstyle><mo>−</mo><mi>π</mi></mrow></math></span> correlation function and their properties, mass and width, are determined. These measurements are in agreement with other available results. Such high-precision data can help refine the understanding of these resonant states, provide stronger constraints for chirally motivated potentials, and address the key challenge of describing the coupled-channel dynamics that may give rise to molecular configurations.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"874 ","pages":"Article 140227"},"PeriodicalIF":4.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146109743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Higgs field as architect of a geodesically complete universe and agent for new physics in interiors of black holes 希格斯场作为测地线完整宇宙的建筑师和黑洞内部新物理学的推动者

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2026-02-23 DOI: 10.1016/j.physletb.2026.140296

Itzhak Bars

{"title":"Higgs field as architect of a geodesically complete universe and agent for new physics in interiors of black holes","authors":"Itzhak Bars","doi":"10.1016/j.physletb.2026.140296","DOIUrl":"10.1016/j.physletb.2026.140296","url":null,"abstract":"<div><div>The Higgs boson is often compared to a small ripple on a vast, calm ocean. This “ocean” is the universal Higgs vacuum expectation value,  ≈ 246 GeV, permeating all space and generating particle masses. Its remarkable uniformity reflects the large-scale nature of the universe. Here I argue that the Higgs field plays a far deeper role. In regions of extreme gravity near singularities, it becomes a non-perturbative, space-time–dependent field that creates new space-time domains beyond gravitational singularities—new regions governed by antigravity. This mechanism produces dramatic dynamics inside black holes and in the earliest universe, including restoration of the electroweak symmetry SU(2) × U(1) at singularities. The adjoining gravity and antigravity regions form a geodesically complete space-time bridged by traversable singularities—absent in the Standard Model coupled to general relativity or its extensions such as string theory. In such a framework, the black hole information paradox admits a new, manifestly unitary resolution. Details of computations are developed in the companion paper [1]; here, only a brief outline is given.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"874 ","pages":"Article 140296"},"PeriodicalIF":4.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146777456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Kinematic and dynamical origins of mean-pT fluctuations in heavy-ion collisions 重离子碰撞中平均-p波动的运动学和动力学起源

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2026-01-30 DOI: 10.1016/j.physletb.2026.140225

Lipei Du

{"title":"Kinematic and dynamical origins of mean-pT fluctuations in heavy-ion collisions","authors":"Lipei Du","doi":"10.1016/j.physletb.2026.140225","DOIUrl":"10.1016/j.physletb.2026.140225","url":null,"abstract":"<div><div>Event-by-event fluctuations of the mean transverse momentum (mean-<em>p<sub>T</sub></em>) provide a sensitive probe of collective dynamics beyond single-particle spectra and anisotropic flow. We present a systematic study of mean-<em>p<sub>T</sub></em> fluctuation observables using a Bayesian-calibrated multistage hydrodynamic framework, including quantitative comparisons to RHIC measurements and model-based investigations of beam-energy and kinematic-acceptance effects. The experimental definitions employed by the STAR and ALICE Collaborations are implemented explicitly and found to yield consistent results within controlled limits. We study the centrality and beam-energy dependence of the observable, its sensitivity to key soft-sector ingredients, and the impact of the kinematic <em>p<sub>T</sub></em> acceptance. By introducing scaled-<em>p<sub>T</sub></em> cuts, we demonstrate that a part of the apparent energy dependence arises from kinematic projection effects, while the remaining trends reflect genuine collective dynamics. Our results establish mean-<em>p<sub>T</sub></em> fluctuations as a nontrivial and independent validation of calibrated hydrodynamic descriptions of the quark–gluon plasma.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"874 ","pages":"Article 140225"},"PeriodicalIF":4.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146089292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Anomaly equation of the large U(1) chiral symmetry 大U(1)手性对称的异常方程

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2025-12-08 DOI: 10.1016/j.physletb.2025.140091

Shingo Takeuchi

{"title":"Anomaly equation of the large U(1) chiral symmetry","authors":"Shingo Takeuchi","doi":"10.1016/j.physletb.2025.140091","DOIUrl":"10.1016/j.physletb.2025.140091","url":null,"abstract":"<div><div>In this study, we first heuristically construct the charges corresponding to the chiral transformation associated with the large U(1) gauge symmetry. We refer to these as <em>the large chiral charges</em>, and to the chiral transformation they generate as <em>the large chiral transformations</em>. Then, showing that these large chiral charges can be obtained based on Noether’s theorem, we obtain the anomaly equation associated with these large chiral transformations.</div><div>Subsequently, considering the one-loop diagrams of the fermionic field coupled to multiple classical gauge fields (which constitute the effective action of the model in this study with regard to the gauge field), we perform an axialization. Then, defining the BRS transformations for the large U(1) gauge symmetry (we refer to these as <em>the large BRS transformations</em>), we perform these transformations to these axialized one-loop diagrams, and demonstrate that the anomaly equations mentioned above can be derived by evaluating these diagrams. We further confirm that these anomaly equations can be derived using the Fujikawa method.</div><div>Finally, we discuss the breaking of unitarity and the low-energy effective model associated with the large chiral anomaly in this study, and comment on potential future developments arising from them.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"874 ","pages":"Article 140091"},"PeriodicalIF":4.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145704901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chaotic dynamics in extremal black holes: A challenge to the chaos bound 极端黑洞中的混沌动力学：对混沌界的挑战

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2026-02-09 DOI: 10.1016/j.physletb.2026.140256

Surojit Dalui , Chiranjeeb Singha , Krishnakanta Bhattacharya

引用次数: 0

Limits on the diffractive mass in strong coherent γ*-nucleus scattering 强相干γ*-核散射中衍射质量的极限

IF 4.5 2区物理与天体物理

Physics Letters B Pub Date : 2026-03-01 Epub Date: 2026-02-10 DOI: 10.1016/j.physletb.2026.140269

A.H. Mueller

引用次数: 0

Visualization of rotational bands of 12C via two-cluster overlap amplitudes 利用双簇重叠振幅可视化12C的旋转带