Physics Letters B最新文献

{"title":"Island rules for the noncommutative black hole","authors":"Yipeng Liu,&nbsp;Wei Xu,&nbsp;Baocheng Zhang","doi":"10.1016/j.physletb.2025.139546","DOIUrl":"10.1016/j.physletb.2025.139546","url":null,"abstract":"<div><div>In the context of noncommutative black holes, we reconsider the island rule and reproduce the Page curve. Since the radiation entropy of the noncommutative black hole will eventually diverge in the absence of islands, it is crucial to include the contribution of islands in the radiation process to recover the Page curve. When cutoff surface is far from event horizon, we find that the existence of islands helps to improve the radiation entropy and avoid its divergence at the late stage, while the radiation entropy for the commutative black hole with islands is still divergent in this case. When cutoff surface is close to event horizon, the existence of islands can lead to the radiation process consistent with the Page curves for both the commutative and noncommutative black holes, but it is interesting to obtain a significantly delay Page time for the noncommutative case, allowing us to avoid considering the contribution of islands for a sufficiently long period of time.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139546"},"PeriodicalIF":4.3,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943329","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":"Gravitational signature of accelerating ModMax–Λ black holes","authors":"N. Heidari,&nbsp;B. Eslam Panah","doi":"10.1016/j.physletb.2025.139530","DOIUrl":"10.1016/j.physletb.2025.139530","url":null,"abstract":"<div><div>In this paper, we derive exact solutions for electrically charged accelerating black holes in ModMax–Einstein–Λ gravity by examining the <em>C</em>-metric. We then investigate how the accelerating and ModMax parameters influence the photonic orbit. Moreover, we analyze both the angular shadow and the shadow radius of an accelerating black hole in the presence of ModMax field and the cosmological constant. Furthermore, we explore the gravitational lensing effect to investigate the impact of accelerating parameter, the ModMax field, and the cosmological constant on the deflection angle of light in a gravitational field.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139530"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937041","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":"Integrable corners in the space of Gukov-Witten surface defects","authors":"Adam Chalabi,&nbsp;Charlotte Kristjansen,&nbsp;Chenliang Su","doi":"10.1016/j.physletb.2025.139512","DOIUrl":"10.1016/j.physletb.2025.139512","url":null,"abstract":"<div><div>We investigate integrability properties of Gukov-Witten 1/2-BPS surface defects in <span><math><mi>S</mi><mi>U</mi><mo>(</mo><mi>N</mi><mo>)</mo></math></span> <span><math><mi>N</mi><mo>=</mo><mn>4</mn></math></span> super-Yang-Mills (SYM) theory in the large-<em>N</em> limit. We demonstrate that ordinary Gukov-Witten defects, which depend on a set of continuous parameters, are not integrable except for special sub-sectors. In contrast to these, we show that rigid Gukov-Witten defects, which depend on a discrete parameter but not on continuous ones, appear integrable in a corner of the discrete parameter space. Whenever we find an integrable sector, we derive a closed-form factorised expression for the leading-order one-point function of unprotected operators built out of the adjoint scalars of <span><math><mi>N</mi><mo>=</mo><mn>4</mn></math></span> SYM theory. Our results raise the possibility of finding an all-loop formula for one-point functions of unprotected operators in the presence of a rigid Gukov-Witten defect at the corner in parameter space.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139512"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943259","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":"Wiggly dilaton: A landscape of spontaneously broken scale invariance","authors":"Sudhakantha Girmohanta ,&nbsp;Yuichiro Nakai ,&nbsp;Yu-Cheng Qiu ,&nbsp;Zhihao Zhang","doi":"10.1016/j.physletb.2025.139534","DOIUrl":"10.1016/j.physletb.2025.139534","url":null,"abstract":"<div><div>The dilaton emerges as a pseudo-Nambu-Goldstone boson (pNGB) associated with the spontaneous breaking of scale invariance in a nearly conformal field theory (CFT). We show the existence of a wiggly dilaton potential that contains multiple vacuum solutions in a five-dimensional (5D) holographic formulation. The wiggly feature originates from boundary potentials of a 5D axion-like scalar field, whose naturally small bulk mass parameter corresponds to a marginally-relevant deformation of the dual CFT. Depending on the energy density of a boundary 3-brane, our model can provide a relaxion potential or generate a light dilaton. However, an extremely light dilaton requires fine-tuning.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139534"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935596","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":"Dark photon-photon resonance conversion of GRB221009A through extra dimension","authors":"M. Afif Ismail ,&nbsp;Chrisna Setyo Nugroho ,&nbsp;Qidir Maulana Binu Soesanto","doi":"10.1016/j.physletb.2025.139531","DOIUrl":"10.1016/j.physletb.2025.139531","url":null,"abstract":"<div><div>The recently observed very high energy (VHE) photons dubbed as GRB221009A by several terrestrial observatories such as LHAASO and Carpet-2 require a physics explanation beyond the standard model. Such energetic gamma ray bursts, originating from yet unknown very distance source at redshift z = 0.1505, would be directly scattered by extragalactic background lights (EBL) rendering its improbable detection at the earth. We show that dark photon which resides in extra dimension would be able to resolve this issue when it oscillates resonantly with the photon in similar fashion with neutrino oscillation. We demonstrate that, for dark photon mass equals to 1 eV, the probability of GRB221009A photons with energy above 0.2 TeV to reach the earth lies in the range between <span><math><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>6</mn></mrow></msup><mspace></mspace><mtext>to</mtext><mspace></mspace><mn>95</mn><mtext>%</mtext></math></span> for kinetic mixing values <span><math><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>14</mn></mrow></msup><mo>≤</mo><mi>ϵ</mi><mo>≤</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>12.5</mn></mrow></msup></math></span> allowed by current constraints.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139531"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937039","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":"Quantum corner symmetry: Representations and gluing","authors":"Luca Ciambelli ,&nbsp;Jerzy Kowalski-Glikman ,&nbsp;Ludovic Varrin","doi":"10.1016/j.physletb.2025.139544","DOIUrl":"10.1016/j.physletb.2025.139544","url":null,"abstract":"<div><div>The corner symmetry algebra organizes the physical charges induced by gravity on codimension-2 corners of a manifold. In this letter, we initiate a study of the quantum properties of this group using as a toy model the corner symmetry group of two-dimensional gravity <span><math><mrow><mi>SL</mi></mrow><mo>(</mo><mn>2</mn><mo>,</mo><mi>R</mi><mo>)</mo><mo>⋉</mo><msup><mrow><mi>R</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>. We first describe the central extensions and how the quantum corner symmetry group arises and give the Casimirs. We then make use of one particular representation to discuss the gluing of corners, achieved by identifying the maximal commuting sub-algebra. This is a concrete implementation of the gravitational constraints at the quantum level.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139544"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935594","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":"Disentangling effects of nucleon size and nucleus structure in relativistic heavy-ion collisions","authors":"Hai-Cheng Wang,&nbsp;Song-Jie Li,&nbsp;Jun Xu,&nbsp;Zhong-Zhou Ren","doi":"10.1016/j.physletb.2025.139516","DOIUrl":"10.1016/j.physletb.2025.139516","url":null,"abstract":"<div><div>While relativistic heavy-ion collisions become an alternative way of studying nucleus structure, the accurate extraction of nucleus structure could be hampered by the uncertainty of nucleon size, and the latter has attracted people's attention in the past few years. We have compared the impacts of nuclear size and nucleus structure on deformation probes in relativistic heavy-ion collisions based on a multiphase transport (AMPT) model. With increasing nucleon size, the absolute values of the deformation probes are generally reduced due to smeared initial density fluctuations. In heavy systems such as ¹⁹⁷Au+¹⁹⁷Au collisions, neglecting the nucleon size could underestimate or overestimate significantly the extracted deformation parameter depending on the used deformation probe, while the scaled anisotropic flow and the scaled Pearson correlation coefficient of flow and transverse momentum are good probes of the nucleus deformation rather insensitive to the nucleon size. In small systems such as ¹⁶O+¹⁶O collisions, the deformation probes are generally more sensitive to the nucleon size than to the nucleus structure, and the transverse momentum fluctuation less sensitive to detailed nucleus structure may serve as a good probe of the nucleon size.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139516"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935597","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":"Production of doubly charmed tetraquark Tcc via photon-photon fusion at electron-positron colliders","authors":"Jun Jiang ,&nbsp;Shi-Yuan Li ,&nbsp;Xiao Liang ,&nbsp;Yan-Rui Liu ,&nbsp;Zong-Guo Si ,&nbsp;Zhong-Juan Yang","doi":"10.1016/j.physletb.2025.139543","DOIUrl":"10.1016/j.physletb.2025.139543","url":null,"abstract":"<div><div>Within a phenomenological diquark fragmentation model, we study the production of doubly charmed tetraquark <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi><mi>c</mi></mrow></msub></math></span> via photon-photon fusion at electron-positron colliders. The production of <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi><mi>c</mi></mrow></msub></math></span> is divided into two steps: the perturbative production of heavy <span><math><mo>(</mo><mi>c</mi><mi>c</mi><mo>)</mo></math></span>-diquark and its nonperturbative hadronization. Two diquark configurations of <span><math><mo>(</mo><mi>c</mi><mi>c</mi><mo>)</mo><msub><mrow><mo>[</mo><mmultiscripts><mrow><mi>S</mi></mrow><mrow><mn>1</mn></mrow><none></none><mprescripts></mprescripts><none></none><mrow><mn>3</mn></mrow></mmultiscripts><mo>]</mo></mrow><mrow><mover><mrow><mn>3</mn></mrow><mrow><mo>¯</mo></mrow></mover></mrow></msub></math></span> and <span><math><mo>(</mo><mi>c</mi><mi>c</mi><mo>)</mo><msub><mrow><mo>[</mo><mmultiscripts><mrow><mi>S</mi></mrow><mrow><mn>0</mn></mrow><none></none><mprescripts></mprescripts><none></none><mrow><mn>1</mn></mrow></mmultiscripts><mo>]</mo></mrow><mrow><mn>6</mn></mrow></msub></math></span> are considered, and the <span><math><mo>(</mo><mi>c</mi><mi>c</mi><mo>)</mo><msub><mrow><mo>[</mo><mmultiscripts><mrow><mi>S</mi></mrow><mrow><mn>1</mn></mrow><none></none><mprescripts></mprescripts><none></none><mrow><mn>3</mn></mrow></mmultiscripts><mo>]</mo></mrow><mrow><mover><mrow><mn>3</mn></mrow><mrow><mo>¯</mo></mrow></mover></mrow></msub></math></span> state dominates the production of <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi><mi>c</mi></mrow></msub></math></span>. We discuss two hadronization models of <span><math><mo>(</mo><mi>c</mi><mi>c</mi><mo>)</mo><msub><mrow><mo>[</mo><mmultiscripts><mrow><mi>S</mi></mrow><mrow><mn>1</mn></mrow><none></none><mprescripts></mprescripts><none></none><mrow><mn>3</mn></mrow></mmultiscripts><mo>]</mo></mrow><mrow><mover><mrow><mn>3</mn></mrow><mrow><mo>¯</mo></mrow></mover></mrow></msub></math></span> intermediate state into the tetraquark <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi><mi>c</mi></mrow></msub></math></span>. It is found that it is promising to observe the tetraquark <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi><mi>c</mi></mrow></msub></math></span> via photon-photon fusion process both at the Circular Electron Positron Collider (CEPC) and the International Linear Collider (ILC). We find that the cross sections are sensitive to constituent charm quark mass of diquark, and they also have strong dependence on the hadronization models.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139543"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937040","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":"Discovering an invisible Z′ at the muon collider","authors":"Anjan Kumar Barik ,&nbsp;Santosh Kumar Rai ,&nbsp;Aviral Srivastava","doi":"10.1016/j.physletb.2025.139533","DOIUrl":"10.1016/j.physletb.2025.139533","url":null,"abstract":"<div><div>We show in this letter how a heavy <span><math><mo>(</mo><mi>O</mi><mo>(</mo><mi>T</mi><mi>e</mi><mi>V</mi><mo>)</mo><mo>)</mo></math></span> invisible <span><math><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></math></span> gauge boson that will practically be out of reach of the Large Hadron Collider (LHC), can be discovered at the future muon collider. The new force carrier has a relatively stronger coupling with the beyond standard model (BSM) sector, while its interaction with the SM fields is much weaker. This weaker coupling is induced through mixing mechanisms, specifically via gauge kinetic mixing and the <span><math><mi>Z</mi><mo>−</mo><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></math></span> mixing. We consider a scenario where the new gauge boson decays mostly to charge-neutral long-lived particles and/or dark matter (DM). We show how producing and detecting this heavier invisible <span><math><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></math></span>, that will be beyond the reach of even the very high luminosity LHC, becomes possible if it is produced in association with an energetic photon at the future muon collider. The on-shell production of the <span><math><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></math></span> will lead to a peak in the photon energy distribution, following the so-called radiative return phenomena and can lead to the accurate determination of the <span><math><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></math></span> mass and its interaction with SM particles.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139533"},"PeriodicalIF":4.3,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943325","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":"Measurement of the Drell–Yan forward-backward asymmetry and of the effective leptonic weak mixing angle in proton-proton collisions at s=13TeV","authors":"","doi":"10.1016/j.physletb.2025.139526","DOIUrl":"10.1016/j.physletb.2025.139526","url":null,"abstract":"<div><div>The forward-backward asymmetry in Drell–Yan production and the effective leptonic electroweak mixing angle are measured in proton-proton collisions at <span><math><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo><mn>13</mn></math></span> TeV, collected by the CMS experiment and corresponding to an integrated luminosity of 138<span><math><mspace></mspace><msup><mrow><mtext>fb</mtext></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math></span>. The measurement uses both dimuon and dielectron events, and is performed as a function of the dilepton mass and rapidity. The unfolded angular coefficient <span><math><msub><mrow><mi>A</mi></mrow><mrow><mn>4</mn></mrow></msub></math></span> is also extracted, as a function of the dilepton mass and rapidity. Using the CT18Z set of parton distribution functions, we obtain <span><math><msup><mrow><mi>sin</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>⁡</mo><msubsup><mrow><mi>θ</mi></mrow><mrow><mtext>eff</mtext></mrow><mrow><mi>ℓ</mi></mrow></msubsup><mo>=</mo><mn>0.23152</mn><mo>±</mo><mn>0.00031</mn></math></span>, where the uncertainty includes the experimental and theoretical contributions. The measured value agrees with the standard model fit result to global experimental data. This is the most precise <span><math><msup><mrow><mi>sin</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>⁡</mo><msubsup><mrow><mi>θ</mi></mrow><mrow><mtext>eff</mtext></mrow><mrow><mi>ℓ</mi></mrow></msubsup></math></span> measurement at a hadron collider, with a precision comparable to the results obtained at LEP and SLD.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"866 ","pages":"Article 139526"},"PeriodicalIF":4.3,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069596","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}