Physical Review D最新文献

{"title":"Calculation and comparison of sensitivities in 0νββ experiments based on key parameters","authors":"X. Yu, L. T. Yang, Q. Yue, H. Ma, H. T. Wong","doi":"10.1103/d6gx-944x","DOIUrl":"https://doi.org/10.1103/d6gx-944x","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"101 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153671","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":"Detectability of dark matter density distribution via gravitational waves from binary black holes in the Galactic Center","authors":"Zhijin Li, Xiao Guo, Zhoujian Cao, Yun-Long Zhang","doi":"10.1103/zr7l-7y5c","DOIUrl":"https://doi.org/10.1103/zr7l-7y5c","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"16 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153712","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":"Revisiting the realistic intersecting D6-brane model with positive and negative μ terms","authors":"Imtiaz Khan, Ali Muhammad, Tianjun Li, Shabbar Raza","doi":"10.1103/5c9m-ksfq","DOIUrl":"https://doi.org/10.1103/5c9m-ksfq","url":null,"abstract":"In light of current constraints from supersymmetry (SUSY) searches within the LHC as well as findings from direct dark matter detection experiments such as LUX-ZEPLIN (LZ), we revisit the three-family Pati-Salam model derived from intersecting D6-branes in type IIA string theory compactified on the T</a:mi>6</a:mn></a:msup>/</a:mo>(</a:mo>Z</a:mi>2</a:mn></a:msub>×</a:mo>Z</a:mi>2</a:mn></a:msub>)</a:mo></a:math> orientifold, known for its realistic low-energy phenomenology. Because the muon anomalous magnetic moment might be in accordance with the Standard Model prediction, we conduct a comprehensive scan over the model’s parameter space for each sign of the Higgsino mass parameter, <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:mi>μ</g:mi><g:mo>&lt;</g:mo><g:mn>0</g:mn></g:math> and <i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><i:mi>μ</i:mi><i:mo>&gt;</i:mo><i:mn>0</i:mn></i:math>. We found that a gravitino mass is typically greater than 1.5 TeV in both scenarios while simultaneously satisfying the LHC SUSY bounds, B-physics observables, along with the Higgs mass constraint. Within the experimentally viable region of the parameter space, the mass spectra of sparticles are found to fall within the following ranges: Gluinos lie in the range of 2–18 TeV, the first- and second-generation squarks and sleptons span 3–16 TeV and 1–6 TeV, respectively. For third-generation sfermions, the lightest stop, which can satisfy the dark matter relic density through neutralino-stop coannihilation consistent with the Planck <k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:mrow><k:mn>5</k:mn><k:mi>σ</k:mi></k:mrow></k:math> bounds, has a mass in the range of 0.5–1.2 TeV. Note that the lightest neutralino will be as heavy as 2.9 TeV. Additionally, the lightest stau could be as light as 200 GeV, as well as heavy up to 5.2 TeV. We further identify several viable mechanisms, including multiple coannihilation channels and resonance mechanisms, and the observed dark matter relic abundance is successfully realized.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"9 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153672","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":"Z4 symmetric inverse seesaw model for neutrino masses and FIMP dark matter","authors":"Ziye Wang, Yakefu Reyimuaji, Nijiati Yalikun","doi":"10.1103/3tvj-qmld","DOIUrl":"https://doi.org/10.1103/3tvj-qmld","url":null,"abstract":"A theoretical framework based on a spontaneously broken Z</a:mi>4</a:mn></a:msub></a:math> symmetry is proposed to simultaneously explain neutrino mass generation via the inverse seesaw mechanism and dark matter (DM) production through a freeze-in scenario. This work extends the standard model with right-handed neutrinos <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:msub><c:mi>N</c:mi><c:mi>i</c:mi></c:msub></c:math>, additional fermions <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:msub><e:mi>χ</e:mi><e:mi>i</e:mi></e:msub></e:math>, and a complex scalar <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:mi>S</g:mi></g:math>. An unbroken <i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><i:msub><i:mi>Z</i:mi><i:mn>2</i:mn></i:msub></i:math> subgroup ensures the stability of the DM candidate, whose relic abundance is dominantly produced via decay and scattering processes involving heavy singlet fermions. Phenomenological analyses show that this relatively minimal construction accommodates the observed neutrino oscillation parameters, consistent with the latest global fit data. Furthermore, the model successfully reproduces the observed DM relic density within the parameter space relevant to neutrino phenomenology, establishing a connection between neutrino properties and DM production.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"31 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145153662","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":"Global analysis of fragmentation functions to light neutral hadrons","authors":"Jun Gao, ChongYang Liu, Mengyang Li, XiaoMin Shen, Hongxi Xing, Yuxiang Zhao, Yiyu Zhou","doi":"10.1103/t5ds-vvc4","DOIUrl":"https://doi.org/10.1103/t5ds-vvc4","url":null,"abstract":"Fragmentation functions (FFs) are crucial nonperturbative components in quantum chromodynamics (QCD), playing a vital role in predictions and understanding of the hadronization process. In this paper, we present the FFs for K&lt;/a:mi&gt;S&lt;/a:mi&gt;0&lt;/a:mn&gt;&lt;/a:msubsup&gt;&lt;/a:math&gt;, &lt;c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;c:mi&gt;η&lt;/c:mi&gt;&lt;/c:math&gt;, &lt;e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;e:msup&gt;&lt;e:mi&gt;π&lt;/e:mi&gt;&lt;e:mn&gt;0&lt;/e:mn&gt;&lt;/e:msup&gt;&lt;/e:math&gt; mesons, and &lt;g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;g:mi mathvariant=\"normal\"&gt;Λ&lt;/g:mi&gt;&lt;/g:math&gt; baryons in the context of global QCD analysis. The data included in the fit are from single inclusive &lt;j:math xmlns:j=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;j:msup&gt;&lt;j:mi&gt;e&lt;/j:mi&gt;&lt;j:mo&gt;+&lt;/j:mo&gt;&lt;/j:msup&gt;&lt;j:msup&gt;&lt;j:mi&gt;e&lt;/j:mi&gt;&lt;j:mo&gt;−&lt;/j:mo&gt;&lt;/j:msup&gt;&lt;/j:math&gt; annihilation (SIA), semi-inclusive deep-inelastic scattering (SIDIS) and proton-proton collisions, with kinematic cuts carefully applied to ensure validity of collinear factorization and perturbative QCD expansion. For the first time, data from SIDIS and hadron-in-jet production in SIA have been incorporated into the extraction of FFs for light-flavor neutral hadrons. Our analysis reveals that these data play a critical role in constraining the gluon distribution, and in distinguishing between different quark flavors. Pulls from different datasets are also studied by performing alternative fits with systematically subtracting groups of data from the nominal fit. For the quality of the fit, good &lt;l:math xmlns:l=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;l:msup&gt;&lt;l:mi&gt;χ&lt;/l:mi&gt;&lt;l:mn&gt;2&lt;/l:mn&gt;&lt;/l:msup&gt;&lt;/l:math&gt; values are achieved for most of the datasets, and FFs are generally well constrained within the momentum fraction region (0.1,0.5). The extracted &lt;n:math xmlns:n=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;n:msubsup&gt;&lt;n:mi&gt;K&lt;/n:mi&gt;&lt;n:mi&gt;S&lt;/n:mi&gt;&lt;n:mn&gt;0&lt;/n:mn&gt;&lt;/n:msubsup&gt;&lt;/n:math&gt; fragmentation functions, together with the &lt;p:math xmlns:p=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;p:msubsup&gt;&lt;p:mi&gt;K&lt;/p:mi&gt;&lt;p:mi&gt;S&lt;/p:mi&gt;&lt;p:mn&gt;0&lt;/p:mn&gt;&lt;/p:msubsup&gt;&lt;/p:math&gt; FFs constructed from &lt;r:math xmlns:r=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;r:msup&gt;&lt;r:mi&gt;K&lt;/r:mi&gt;&lt;r:mo&gt;±&lt;/r:mo&gt;&lt;/r:msup&gt;&lt;/r:math&gt; FFs via isospin symmetry, are used to test isospin symmetry in kaon fragmentation. Although a definitive conclusion cannot be reached yet, these studies have identified several potential measurements that can be performed at existing facilities, which may ultimately help us to arrive at a conclusive answer. With the comprehensive species of FFs extracted within the NPC framework, we are able to perform a test on the momentum sum rule with the light-flavor charged and neutral hadrons. These neutral hadrons are found to carry a relatively smaller fraction of the fragmenting parton’s momentum compared to the charged ones. The central and Hessian error","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"63 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140800","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":"Adjustment of Faddeev-Popov quantization to reducible gauge theories: Antisymmetric tensor fermion in AdSd space","authors":"Andrei Barvinsky, Ioseph Buchbinder, Vladimir Krykhtin, Dmitry Nesterov","doi":"10.1103/mztf-9xzm","DOIUrl":"https://doi.org/10.1103/mztf-9xzm","url":null,"abstract":"We develop the method adjusting the Faddeev-Popov factorization procedure for the quantization of generic reducible gauge theories with linearly dependent generators and apply it to the first stage reducible model of second rank antisymmetric fermion in d</a:mi></a:math>-dimensional anti–de Sitter (AdS) spacetime. The method consists of nested factorizations of the gauge group volume for the determination of the consistently defined delta function of reduced gauge conditions, group integration measure, and gauge-fixed contribution of ghosts. It is compared to the Batalin-Vilkovisky (BV) formalism of quantizing theories with linearly dependent generators and shown to be equivalent to it for first stage reducible theories. Nevertheless, the method under consideration, unlike the BV formalism, from the very beginning leads to the functional integral with fewer number of ghosts. Using this method, we quantized the variant of fermionic totally antisymmetric tensor-spinor theory in AdS space and derived its effective action in terms of the functional determinants of special Dirac-type operators. Limitations of the method are also discussed along with the prospects of its extension to higher reducibility stages and higher rank models of antisymmetric fermions.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"2 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140802","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":"Machine learning the tip of the red giant branch","authors":"Mitchell T. Dennis, Jeremy Sakstein","doi":"10.1103/n2sv-9mpd","DOIUrl":"https://doi.org/10.1103/n2sv-9mpd","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"62 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140797","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":"Transport coefficients and quasinormal modes in Einstein-dilaton holographic QCD","authors":"Nairy A. Villarreal, Luis A. H. Mamani, Alfonso Ballon-Bayona, Alex S. Miranda, Vilson T. Zanchin","doi":"10.1103/p2zw-5xm7","DOIUrl":"https://doi.org/10.1103/p2zw-5xm7","url":null,"abstract":"In this paper, we investigate the transport coefficients of a strongly coupled plasma in the context of holographic QCD models based on Einstein-dilaton gravity that are compatible with linear confinement at zero temperature. At finite temperature, the holographic model is characterized by an asymptotically anti–de Sitter black hole coupled to a scalar field, the dilaton, which is quadratic in the radial direction. The inclusion of the scalar field results in an explicit breaking of the conformal symmetry in the dual field theory. In such systems, the Hawking temperature of the black hole corresponds to the plasma temperature in the dual field theory. We confirm the existence of a minimum temperature T</a:mi>min</a:mi></a:msub></a:math>, above which two distinct classes of black hole solutions emerge: one corresponding to large black holes and the other to small black holes. We calculate some thermodynamic quantities—such as entropy, specific heat, and speed of sound—and find results that are consistent with similar holographic models. We calculate the quasinormal modes of the tensor and vector sectors using the pseudospectral method. In the hydrodynamic regime, we derive the dispersion relation for the vector sector, from which we extract the shear viscosity and the ratio <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:mi>η</c:mi><c:mo>/</c:mo><c:mi>s</c:mi><c:mo>=</c:mo><c:mn>1</c:mn><c:mo>/</c:mo><c:mn>4</c:mn><c:mi>π</c:mi></c:math>. The bulk viscosity is calculated using the Kubo formula in the scalar sector. Finally, our results for the speed of sound are compared with the lattice QCD predictions, and our results for the bulk viscosity are compared with those reported by the JETSCAPE collaboration.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"18 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140798","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":"GW200208_222617 as an eccentric black-hole binary merger: Properties and astrophysical implications","authors":"Isobel Romero-Shaw, Jakob Stegmann, Hiromichi Tagawa, Davide Gerosa, Johan Samsing, Nihar Gupte, Stephen R. Green","doi":"10.1103/jj7m-x66y","DOIUrl":"https://doi.org/10.1103/jj7m-x66y","url":null,"abstract":"Detecting orbital eccentricity in a stellar-mass black-hole merger would point to a nonisolated formation channel. Eccentric binaries can form in dense stellar environments such as globular clusters or active galactic nuclei or from triple stellar systems in the Galactic field. However, confidently measuring eccentricity is challenging—short signals from high-mass eccentric mergers can mimic spin-induced precession, making the two effects hard to disentangle. This degeneracy weakens considerably for longer-duration signals. Here, GW200208_222617 provides a rare opportunity. Originating from a relatively low-mass binary with source-frame chirp mass ∼</a:mo>20</a:mn>M</a:mi>⊙</a:mo></a:msub></a:math>, its gravitational-wave signal spanned <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><d:mo>∼</d:mo><d:mn>14</d:mn></d:math> orbital cycles in band, with no indication of data quality issues. Previous analyses for quasicircular binaries found no evidence for spin precession, and multiple subsequent studies found the data to favor an eccentric merger despite notable technical differences. All in all, we believe GW200208_222617 is the black-hole merger event from Gravitational-Wave Transient Catalog-3 with the least ambiguous detection of eccentricity. We present a critical discussion of properties and astrophysical interpretation of GW200208_222617 as an eccentric black-hole merger using models of field triples, globular clusters, and active galactic nuclei. We find that if GW200208_222617 was indeed eccentric, its origin is consistent with a field triple or globular cluster. Formation in the inner regions of an active galactic nucleus is disfavored. The outer regions of such a disk remain a viable origin for GW200208_222617; we demonstrate how future detections of eccentric mergers formed in such environments could be powerful tools for constraining the disk geometry.","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"88 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140801","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":"Early time solution as an alternative to the late time evolving dark energy with DESI DR2 BAO","authors":"E. Chaussidon, M. White, A. de Mattia, R. Gsponer, S. Ahlen, D. Bianchi, D. Brooks, T. Claybaugh, S. Cole, A. Cuceu, A. de la Macorra, P. Doel, S. Ferraro, A. Font-Ribera, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A. Gontcho, G. Gutierrez, J. Guy, C. Hahn, H. K. Herrera-Alcantar, K. Honscheid, M. Ishak, D. Kirkby, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, M. E. Levi, R. Miquel, J. Moustakas, G. Niz, W. J. Percival, F. Prada, I. Pérez-Ràfols, A. J. Ross, G. Rossi, E. Sanchez, D. Schlegel, H. Seo, D. Sprayberry, M. Walther, B. A. Weaver","doi":"10.1103/xtql-wh3h","DOIUrl":"https://doi.org/10.1103/xtql-wh3h","url":null,"abstract":"","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"53 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140796","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}