Physics Letters B最新文献

{"title":"Moments of inertia of rare-earth nuclei and the nuclear time-odd mean fields within exact solutions of the adiabatic theory","authors":"Xuwei Sun ,&nbsp;Jacek Dobaczewski ,&nbsp;Markus Kortelainen ,&nbsp;Jhilam Sadhukhan ,&nbsp;Adrián Sánchez-Fernández ,&nbsp;Herlik Wibowo","doi":"10.1016/j.physletb.2025.139685","DOIUrl":"10.1016/j.physletb.2025.139685","url":null,"abstract":"<div><div>We systematically analyse the nuclear moments of inertia determined within the Skyrme and Gogny density functional theories. The time-odd mean fields generated by collective rotation are self-consistently determined by a novel exact iterative solution of the adiabatic time-dependent Hartree-Fock-Bogoliubov (ATDHFB) equations. Although details of the results depend on the functional used, the calculated moments of inertia are in good overall agreement with the experimental data, with no adjustable parameters. To show the essential importance of the time-odd mean fields, we compared the ATDHFB moments of inertia with those obtained from the Inglis-Belyaev formula. For Skyrme density functionals, we find strong correlations between the effective mass and the impact of the time-odd mean fields on the rotational and vibrational collective inertia.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139685"},"PeriodicalIF":4.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492121","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}

{"title":"Suppressed Drell-Yan process by an external magnetic field","authors":"Shile Chen ,&nbsp;Jiaxing Zhao ,&nbsp;Pengfei Zhuang","doi":"10.1016/j.physletb.2025.139679","DOIUrl":"10.1016/j.physletb.2025.139679","url":null,"abstract":"<div><div>The strongest electromagnetic fields in nature are created in high energy nuclear collisions and expected to change the dynamic scattering processes in the early stage. The magnetic field effect on the Drell-Yan process is investigated in this work. The single photon decay into quark pairs and lepton pairs in an external magnetic field leads to a significant Drell-Yan suppression in low and intermediate invariant mass region. The calculation up to the Landau level <span><math><mi>n</mi><mo>−</mo><mn>1</mn></math></span> is complete in the energy region <span><math><mi>s</mi><mo>&lt;</mo><mn>2</mn><mo>/</mo><mn>3</mn><mi>n</mi><mo>(</mo><mi>e</mi><mi>B</mi><mo>)</mo></math></span>, and the enlarged phase space at higher landau levels may enhance the dilepton spectrum in the high mass region.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139679"},"PeriodicalIF":4.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492181","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}

{"title":"Multiplicity dependence of charm baryon and charm meson production in pPb collisions at sNN=8.16TeV","authors":"","doi":"10.1016/j.physletb.2025.139672","DOIUrl":"10.1016/j.physletb.2025.139672","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Measurements of the production yields of charm baryons (&lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;Λ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt;) and charm mesons (&lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt;) in proton-lead collisions at a nucleon-nucleon center-of-mass energy of 8.16 TeV are presented. The data were collected in 2016 with the CMS experiment and correspond to an integrated luminosity of 186 &lt;span&gt;&lt;math&gt;&lt;mspace&gt;&lt;/mspace&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mtext&gt;nb&lt;/mtext&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/math&gt;&lt;/span&gt;. The &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;Λ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt; baryon is reconstructed from the decay channel &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;Λ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;→&lt;/mo&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;K&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;S&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mi&gt;p&lt;/mi&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt;, while the &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt; meson is reconstructed via &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;mo&gt;→&lt;/mo&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;K&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;π&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt;. The &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;Λ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt; baryon and &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt; meson yields are extracted in several charged-particle multiplicity classes. No strong multiplicity dependence of the &lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;Λ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt;-to-&lt;span&gt;&lt;math&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;mi&gt;D&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;msubsup&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/math&gt;&lt;/span&gt; yield ratio is observed, unlike the observed strange baryon to strange meson yield ratio of &lt;span&gt;&lt;math&gt;&lt;mi&gt;Λ&lt;/mi&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mover&gt;&lt;mrow&gt;&lt;mi&gt;Λ&lt;/mi&gt;&lt;/mrow&gt;&lt;mo&gt;‾&lt;/mo&gt;&lt;/mover&gt;&lt;/math&gt;","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139672"},"PeriodicalIF":4.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144515902","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}

{"title":"Flyby-induced displacement effect: An analytic solution","authors":"P.M. Zhang ,&nbsp;Z.K. Silagadze ,&nbsp;P.A. Horvathy","doi":"10.1016/j.physletb.2025.139687","DOIUrl":"10.1016/j.physletb.2025.139687","url":null,"abstract":"<div><div>The motion of particles hit by a burst of gravitational waves generated by flyby admits, for the derivative-of-the-Gaussian profile, only a numerical description. The profile can however be approximated by the hyperbolic Scarf potential which admits an exact analytic solution via the Nikiforov-Uvarov method. Our toy model is consistent with the prediction of Zel'dovich and Polnarev provided the wave amplitude takes certain “magical” values.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139687"},"PeriodicalIF":4.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492183","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}

{"title":"Exploring potential Higgs resonances at 650 GeV and 95 GeV in the 2HDM Type III","authors":"R. Benbrik ,&nbsp;M. Boukidi ,&nbsp;K. Kahime ,&nbsp;S. Moretti ,&nbsp;L. Rahili ,&nbsp;B. Taki","doi":"10.1016/j.physletb.2025.139688","DOIUrl":"10.1016/j.physletb.2025.139688","url":null,"abstract":"<div><div>Recent searches by the CMS collaboration at the Large Hadron Collider (LHC) in the ‘diphoton plus <span><math><mi>b</mi><mover><mrow><mi>b</mi></mrow><mrow><mo>¯</mo></mrow></mover></math></span> final state’ have revealed an excess near 650 GeV, which might indicate the presence of a (broad) heavy resonance decaying into a Standard Model (SM) Higgs boson and an additional particle. At the same time, both ATLAS and CMS as well as all experiments at the Large Electron-Position (LEP) collider have reported excesses consistent with a light Higgs boson channel around 95 GeV, suggesting a potential connection between these two signals. In this study, we investigate these anomalies within the context of the CP-conserving 2-Higgs-Doublet Model (2HDM) Type III. In our proposed scenario, a heavy CP-odd Higgs boson <em>A</em> with a mass near 650 GeV decays into a SM-like Higgs boson <em>H</em> and a <em>Z</em> boson, with the <em>H</em> boson subsequently decaying into diphotons and the <em>Z</em> boson decaying into <span><math><mi>b</mi><mover><mrow><mi>b</mi></mrow><mrow><mo>¯</mo></mrow></mover></math></span> pairs. To explain the excess around 95 GeV, we independently select the mass of the light CP-even Higgs boson of the model <em>h</em> to be around this value. This configuration allows for a consistent explanation of both the high- and low-mass excesses observed in the experiments. Through a detailed analysis, we demonstrate that these two signals can be fitted simultaneously at the 2.5<em>σ</em> significance level, offering a promising solution to the observed anomalies and potentially hinting at new physics Beyond the Standard Model (BSM).</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139688"},"PeriodicalIF":4.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492169","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}

{"title":"Studying charm hadronisation into baryons with azimuthal correlations of Λc+ with charged particles in pp collisions at s=13 TeV","authors":"","doi":"10.1016/j.physletb.2025.139681","DOIUrl":"10.1016/j.physletb.2025.139681","url":null,"abstract":"<div><div>The distribution of angular correlations between prompt charm hadrons and primary charged particles in pp collisions is sensitive to the charm-quark hadronisation process. In this letter, charm-baryon correlations are measured for the first time by studying the azimuthal-angle difference between charged particles and prompt <span><math><msubsup><mrow><mi>Λ</mi></mrow><mrow><mtext>c</mtext></mrow><mrow><mo>+</mo></mrow></msubsup></math></span> baryons produced in pp collisions at a centre-of-mass energy of <span><math><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo><mn>13</mn></math></span> TeV, with the ALICE detector. <span><math><msubsup><mrow><mi>Λ</mi></mrow><mrow><mtext>c</mtext></mrow><mrow><mo>+</mo></mrow></msubsup></math></span> baryons are reconstructed at midrapidity (<span><math><mo>|</mo><mi>y</mi><mo>|</mo><mo>&lt;</mo><mn>0.5</mn></math></span>) in the transverse-momentum interval <span><math><mn>3</mn><mo>&lt;</mo><msub><mrow><mi>p</mi></mrow><mrow><mtext>T</mtext></mrow></msub><mo>&lt;</mo><mn>16</mn></math></span> GeV/<em>c</em>, and correlated with charged particles with <span><math><msub><mrow><mi>p</mi></mrow><mrow><mtext>T</mtext></mrow></msub><mo>&gt;</mo><mn>0.3</mn></math></span> GeV/<em>c</em> and pseudorapidity <span><math><mo>|</mo><mi>η</mi><mo>|</mo><mo>&lt;</mo><mn>0.8</mn></math></span>. For <span><math><mn>3</mn><mo>&lt;</mo><msubsup><mrow><mi>p</mi></mrow><mrow><mtext>T</mtext></mrow><mrow><msubsup><mrow><mi>Λ</mi></mrow><mrow><mtext>c</mtext></mrow><mrow><mo>+</mo></mrow></msubsup><mo>,</mo><mtext>D</mtext></mrow></msubsup><mo>&lt;</mo><mn>5</mn></math></span> GeV/<em>c</em>, the comparison with published measurements of D-meson and charged-particle correlations in the same collision system hints at a larger number of low-momentum particles associated with <span><math><msubsup><mrow><mi>Λ</mi></mrow><mrow><mtext>c</mtext></mrow><mrow><mo>+</mo></mrow></msubsup></math></span>-baryon triggers than with D-meson triggers, both in the collinear and opposite directions with respect to the trigger particle. These differences can be quantified by the comparison of the properties of the near- and away-side correlation peaks, and are not reproduced by predictions of various Monte Carlo event generators, generally underpredicting the associated particle yields at <span><math><msubsup><mrow><mi>p</mi></mrow><mrow><mtext>T</mtext></mrow><mrow><mtext>assoc</mtext></mrow></msubsup><mo>&lt;</mo><mn>1</mn></math></span> GeV/<em>c</em>. This tension between <span><math><msubsup><mrow><mi>Λ</mi></mrow><mrow><mtext>c</mtext></mrow><mrow><mo>+</mo></mrow></msubsup></math></span>-baryon and D-meson associated peak yields could suggest a modified fragmentation of the charm quark, or a different hadronisation process, when a charm baryon is produced in the final state.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139681"},"PeriodicalIF":4.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144515901","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}

{"title":"Diving into a holographic multi-band superconductor","authors":"Xing-Kun Zhang ,&nbsp;Xin Zhao ,&nbsp;Zhang-Yu Nie ,&nbsp;Ya-Peng Hu ,&nbsp;Yu-Sen An","doi":"10.1016/j.physletb.2025.139684","DOIUrl":"10.1016/j.physletb.2025.139684","url":null,"abstract":"<div><div>In this work, we investigate the interior structure of a holographic multi-band superconductor model. We focus on the holographic superconductor system with two scalar fields which correspond to two s-wave order parameters in the dual condensed matter system. We discover a new kind of transition rule among Kasner universe near the black hole singularity which is distinct from the holographic single-band superconductor model. This transition rule is the first generalization of Kasner transition behavior to scenarios involving multiple free parameters, which is useful for uncovering the most general interior structures of hairy black holes. Moreover, we find that the Kasner exponents are sensitive to the details of order parameters in boundary system. These different near singularity structures we found show that the black hole interior plays crucial role in characterizing the boundary dual condensed matter systems.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139684"},"PeriodicalIF":4.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492123","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}

{"title":"Coherence of multipartite quantum states in the black hole quantum atmosphere","authors":"Adam Z. Kaczmarek ,&nbsp;Dominik Szczȩśniak ,&nbsp;Zygmunt Ba̧k ,&nbsp;Radosław Szczȩśniak","doi":"10.1016/j.physletb.2025.139683","DOIUrl":"10.1016/j.physletb.2025.139683","url":null,"abstract":"<div><div>According to the recently introduced concept of quantum atmosphere, black hole radiation is proposed to originate from the quantum excitations at an effective distance (<em>r</em>) near the event horizon (<span><math><msub><mrow><mi>r</mi></mrow><mrow><mi>h</mi></mrow></msub></math></span>). Here, this concept is explored from the quantum resource perspective by analysing the coherence of multipartite quantum systems located near a black hole. For the Greenberger-Horne-Zeilinger state, it is found that signatures of the atmosphere are apparent. This is to say, the coherence exhibits a peak near the event horizon and next decreases, recovering conventional behaviour at <span><math><mi>r</mi><mo>/</mo><msub><mrow><mi>r</mi></mrow><mrow><mi>h</mi></mrow></msub><mo>→</mo><mo>∞</mo></math></span>. Interestingly, the results shown that as the quantum state becomes more complex and the number of parties increases, the role of quantum atmosphere diminishes and the standard behaviour expected for the <em>N</em>-partite coherence quantifiers can be observed. This means that in more complex configurations, the quantum atmosphere signatures may not be detectable. Hence, our findings suggest that caution should be taken regarding size of a system when considering the quantum atmosphere argument.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139683"},"PeriodicalIF":4.3,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492124","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}

{"title":"U-spin conjugate CP violation relations in bottom baryon decays","authors":"Bo-Nan Zhang ,&nbsp;Di Wang","doi":"10.1016/j.physletb.2025.139674","DOIUrl":"10.1016/j.physletb.2025.139674","url":null,"abstract":"<div><div>Motivated by the first observation of <em>CP</em> violation in baryon decays, we study the relations for <em>CP</em> asymmetries of bottom baryon decays. It is found that all the <em>CP</em> violation ratios of two <em>U</em>-spin conjugate decay channels satisfy a simple equation in the <em>U</em>-spin limit. As examples, we present the <em>U</em>-spin conjugate channels in the four-body decays of bottom baryons. The <em>CP</em> violation ratios between them might provide predictions for unobserved channels and be tested in future experiments.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139674"},"PeriodicalIF":4.3,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471892","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}

{"title":"On global vortices in the higher derivative Lorentz-violating scenario","authors":"M. Paganelly ,&nbsp;M.A. Anacleto ,&nbsp;F.A. Brito ,&nbsp;E. Passos","doi":"10.1016/j.physletb.2025.139668","DOIUrl":"10.1016/j.physletb.2025.139668","url":null,"abstract":"<div><div>We study the influence of Lorentz invariance violation (LIV) background in energy regularization of global structures in <span><math><mo>(</mo><mn>2</mn><mo>,</mo><mn>1</mn><mo>)</mo></math></span>–dimensions. To this end, we consider a model in which the complex scalar and fixed three-vector couple as a high derivative order term. We show that LIV-background does not affect the energy and the equation of motion of neutral global structures. However, we observe that the charged structures are sensitive to LIV-background by presenting signatures in the electric field whose intensity is controlled by the LIV-parameter. Furthermore, the procedure developed leads to first-order solutions with finite energy and a regularized electric field.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"868 ","pages":"Article 139668"},"PeriodicalIF":4.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337649","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}