Physics Letters B最新文献_第7页

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139260

Pablo Bueno, Pablo A. Cano, Robie A. Hennigar

引用次数: 0

Multi-messenger probes of asteroid mass primordial black holes: Superradiance spectroscopy, Hawking radiation, and microlensing

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139254

James B. Dent , Bhaskar Dutta , Tao Xu

{"title":"Multi-messenger probes of asteroid mass primordial black holes: Superradiance spectroscopy, Hawking radiation, and microlensing","authors":"James B. Dent , Bhaskar Dutta , Tao Xu","doi":"10.1016/j.physletb.2025.139254","DOIUrl":"10.1016/j.physletb.2025.139254","url":null,"abstract":"<div><div>Superradiance provides a unique opportunity for investigating dark sectors as well as primordial black holes, which themselves are candidates for dark matter over a wide mass range. Using axion-like particles as an example, we show that line signals emerging from a superradiated axion cloud combined with black hole Hawking radiation in extragalactic and galactic halos, along with microlensing observations lead to complementary constraints on parameter space combinations including the axion-photon coupling, axion mass, black hole mass, and its dark matter fraction, <span><math><msub><mrow><mi>f</mi></mrow><mrow><mtext>PBH</mtext></mrow></msub></math></span>. For the asteroid mass range <span><math><mo>∼</mo><msup><mrow><mn>10</mn></mrow><mrow><mn>16</mn></mrow></msup><mo>−</mo><msup><mrow><mn>10</mn></mrow><mrow><mn>22</mn></mrow></msup><mspace></mspace><mtext>g</mtext></math></span>, where primordial black holes can provide the totality of dark matter, we demonstrate that ongoing and upcoming observations such as SXI, JWST, and AMEGO-X will be sensitive to possible line and continuum signals, respectively, providing probes of previously inaccessible regions of <span><math><msub><mrow><mi>f</mi></mrow><mrow><mtext>PBH</mtext></mrow></msub></math></span> parameter space. Further complementarity from a stochastic gravitational-wave background emerging from the black hole formation mechanism is also considered.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"861 ","pages":"Article 139254"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143035241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dark matter annihilation via Breit-Wigner enhancement with heavier mediator

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139290

Yu Cheng , Shao-Feng Ge , Jie Sheng , Tsutomu T. Yanagida

引用次数: 0

Constraints on the Higgs boson self-coupling from the combination of single and double Higgs boson production in proton-proton collisions at s=13TeV 质子-质子碰撞中单、双希格斯玻色子产生组合对希格斯玻色子自耦合的约束[公式省略]

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2024.139210

{"title":"Constraints on the Higgs boson self-coupling from the combination of single and double Higgs boson production in proton-proton collisions at s=13TeV","authors":"","doi":"10.1016/j.physletb.2024.139210","DOIUrl":"10.1016/j.physletb.2024.139210","url":null,"abstract":"<div><div>The Higgs boson (H) trilinear self-coupling, <span><math><msub><mrow><mi>λ</mi></mrow><mrow><mn>3</mn></mrow></msub></math></span>, is constrained via its measured properties and limits on the HH pair production using the proton-proton collision data collected by the CMS experiment at <span><math><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo><mn>13</mn><mspace></mspace><mtext>TeV</mtext></math></span>. The combination of event categories enriched in single-H and HH events is used to measure <span><math><msub><mrow><mi>κ</mi></mrow><mrow><mi>λ</mi></mrow></msub></math></span>, defined as the value of <span><math><msub><mrow><mi>λ</mi></mrow><mrow><mn>3</mn></mrow></msub></math></span> normalized to its standard model prediction, while simultaneously constraining the Higgs boson couplings to fermions and vector bosons. Values of <span><math><msub><mrow><mi>κ</mi></mrow><mrow><mi>λ</mi></mrow></msub></math></span> outside the interval <span><math><mo>−</mo><mn>1.2</mn><mo><</mo><msub><mrow><mi>κ</mi></mrow><mrow><mi>λ</mi></mrow></msub><mo><</mo><mn>7.5</mn></math></span> are excluded at 2<em>σ</em> confidence level, which is compatible with the expected range of <span><math><mo>−</mo><mn>2.0</mn><mo><</mo><msub><mrow><mi>κ</mi></mrow><mrow><mi>λ</mi></mrow></msub><mo><</mo><mn>7.7</mn></math></span> under the assumption that all other Higgs boson couplings are equal to their standard model predicted values. Relaxing the assumption on the Higgs couplings to fermions and vector bosons the observed (expected) <span><math><msub><mrow><mi>κ</mi></mrow><mrow><mi>λ</mi></mrow></msub></math></span> interval is constrained to be within <span><math><mo>−</mo><mn>1.4</mn><mo><</mo><msub><mrow><mi>κ</mi></mrow><mrow><mi>λ</mi></mrow></msub><mo><</mo><mn>7.8</mn></math></span> (<span><math><mo>−</mo><mn>2.3</mn><mo><</mo><msub><mrow><mi>κ</mi></mrow><mrow><mi>λ</mi></mrow></msub><mo><</mo><mn>7.8</mn></math></span>) at 2<em>σ</em> confidence level.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"861 ","pages":"Article 139210"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142989024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multimessenger study of baryon-charged QCD matter in heavy-ion collisions 重离子碰撞中重子带电QCD物质的多信使研究

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139270

Lipei Du

引用次数: 0

Disentangling single-particle and collective signatures in 12C(p,2p)11B reaction

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139253

E. Cravo , R. Crespo , A. Deltuva , D. Jurčiukonis

引用次数: 0

Dynamical constraints on pseudo-gauge transformations 伪规范变换的动力学约束

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139244

Zbigniew Drogosz , Wojciech Florkowski , Mykhailo Hontarenko , Radoslaw Ryblewski

{"title":"Dynamical constraints on pseudo-gauge transformations","authors":"Zbigniew Drogosz , Wojciech Florkowski , Mykhailo Hontarenko , Radoslaw Ryblewski","doi":"10.1016/j.physletb.2025.139244","DOIUrl":"10.1016/j.physletb.2025.139244","url":null,"abstract":"<div><div>Classical pseudo-gauge transformations are discussed in the context of hydrodynamic models of heavy-ion collisions. A decomposition of the pseudo-gauge transformation into Lorentz-invariant tensors is made, which allows for better interpretation of its physical consequences. For pseudo-gauge transformations connecting two symmetric energy-momentum tensors, we find that the super-potential <span><math><msup><mrow><mi>Φ</mi></mrow><mrow><mi>λ</mi><mi>μ</mi><mi>ν</mi></mrow></msup></math></span> must obey a conservation law of the form <span><math><msub><mrow><mo>∂</mo></mrow><mrow><mi>λ</mi></mrow></msub><msup><mrow><mi>Φ</mi></mrow><mrow><mi>λ</mi><mi>μ</mi><mi>ν</mi></mrow></msup><mo>=</mo><mn>0</mn></math></span>. This equation, referred to below as the STS condition, represents a constraint that is hardly possible to be satisfied for tensors constructed out of the basic hydrodynamic variables such as temperature, baryon chemical potential, and the hydrodynamic flow. However, in a special case of the boost-invariant flow, the STS condition is automatically fulfilled and a non-trivial residual pseudo-gauge transformation defined by a single scalar field is allowed. In this case the bulk and shear viscosity coefficients become pseudo-gauge dependent; however, their specific linear combination appearing in the equations of motion remains pseudo-gauge invariant. This finding provides new insights into the role of pseudo-gauge transformations and pseudo-gauge invariance.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"861 ","pages":"Article 139244"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electroweak hierarchy from conformal and custodial symmetry 从共形对称和监护对称看电弱层次

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139241

Thede de Boer, Manfred Lindner, Andreas Trautner

{"title":"Electroweak hierarchy from conformal and custodial symmetry","authors":"Thede de Boer, Manfred Lindner, Andreas Trautner","doi":"10.1016/j.physletb.2025.139241","DOIUrl":"10.1016/j.physletb.2025.139241","url":null,"abstract":"<div><div>We present “Custodial Naturalness” as a new mechanism to explain the separation between the electroweak (EW) scale and the scale of potential ultraviolet completions of the Standard Model (SM). We assume classical scale invariance as well as an extension of the SM scalar sector custodial symmetry to <span><math><mrow><mi>SO</mi></mrow><mo>(</mo><mn>6</mn><mo>)</mo></math></span>. This requires a single new complex scalar field charged under a new <span><math><mi>U</mi><msub><mrow><mo>(</mo><mn>1</mn><mo>)</mo></mrow><mrow><mi>X</mi></mrow></msub></math></span> gauge symmetry which partially overlaps with <span><math><mi>B</mi><mo>−</mo><mi>L</mi></math></span>. Classical scale invariance and the high-scale scalar sector <span><math><mrow><mi>SO</mi></mrow><mo>(</mo><mn>6</mn><mo>)</mo></math></span> custodial symmetry are radiatively broken by quantum effects that generate a new intermediate scale by dimensional transmutation. The little hierarchy problem is solved because the Higgs boson arises as an elementary (i.e. non-composite) pseudo-Nambu-Goldstone boson (pNGB) of the spontaneously broken <span><math><mrow><mi>SO</mi></mrow><mo>(</mo><mn>6</mn><mo>)</mo></math></span> custodial symmetry. The minimal setting has the same number of parameters as the SM and predicts new physics in the form of a heavy <span><math><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></math></span> with fixed couplings to the SM and a mass of <span><math><msub><mrow><mi>m</mi></mrow><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mo>′</mo></mrow></msup></mrow></msub><mo>≈</mo><mn>4</mn><mo>−</mo><mn>100</mn><mspace></mspace><mrow><mi>TeV</mi></mrow></math></span>, as well as a light but close-to invisible dilaton with a mass <span><math><msub><mrow><mi>m</mi></mrow><mrow><msub><mrow><mi>h</mi></mrow><mrow><mi>Φ</mi></mrow></msub></mrow></msub><mo>≈</mo><mn>75</mn><mspace></mspace><mrow><mi>GeV</mi></mrow></math></span>.</div></div>","PeriodicalId":20162,"journal":{"name":"Physics Letters B","volume":"861 ","pages":"Article 139241"},"PeriodicalIF":4.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142967779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “A potential approach to the X(3872) thermal behavior” [Phys. Lett. B 854 (2024) 138760] “X（3872）热行为的潜在方法”的勘误表[物理学]。列托人。B 854 (2024) 138760]

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139258

Néstor Armesto , Miguel Ángel Escobedo , Elena G. Ferreiro , Víctor López-Pardo

引用次数: 0

Holographic ferromagnetic phase transitions with three typical nonlinear electrodynamics in Gauss-Bonnet gravity 高斯-邦纳重力中三种典型非线性电动力学的全息铁磁相变

IF 4.3 2区物理与天体物理

Physics Letters B Pub Date : 2025-02-01 DOI: 10.1016/j.physletb.2025.139250

Ruo-Tong Wei , Ya-Bo Wu , Te Huang , Jun-Ping Wang , Cheng-Yuan Zhang

引用次数: 0