Accès ouvert déclaré
2026
article
Differential decay rate of B+ → J/ψK+ with the LHCb Upgrade I experiment
Lucio Anderlini, C. Arata, Maik Becker, Sergi Bernet Andres, Yuman Cai, P. Carniti, A. J. Chadwick, S. Chen, Alex Chen Hu, M. Cruz Torres, P. Di Nezza, S. Didenko, Lucas Dittmann, Weidong Duan, Ellinor Eckstein, U. Egede, S. Esen, Saba Faghih, Yang Gao, Rui Gao, Tian-Qi Gao, S. Hansmann-Menzemer, S. Hansmann-Menzemer, R. Henderson, David J. Houston, W. D. Hulsbergen, X. Hu, E. Jiang, Yuyang Jiang, S. Legotin, H. Li, Kechen Li, Lanxing Li, Manshu Li, Tiange Li, Tianqi Li, Qinze Li, Yiming Li, Yujie Li, Zhengchen Lian, Qiming Liang, Xixin Liang, Zhihua Liang, Tai-Hua Lin, Henry James Linton, K. Liu, Shuaiyi Liu, Guoming Liu, Y. Liu, Yiwei Liu, F. Maciuc, S. Maccolini, C. Marín Benito, S. Qu, Medaer Sacha Emile R., Jianchun Wang, Jianqiao Wang, Jike Wang, M. Wang, Ganrong Wang, Rui Wang, Xiao Wang, Xiaolin Wang, Xiaohan Wang, Yilong Wang, Yuhao Wang, Yinghao Wang, Ziyi Wang, H. y. Wu, Ao Xu, L. Xu, Zhenhong Wu, K. Wyllie, Zhiyu Xiang, Tianyu Xing, A. Xu, Yuge Zhang, Zhicai Zhang
0Citations signalées — pas une note de qualité
107Institutions déclarées
23Pays d’affiliation déclarés
Résumé fourni par la source
A bstract The normalised decay rate of B + → J/ψ (→ μ + μ − ) K + is measured as a function of the lepton helicity angle using a data sample corresponding to an integrated luminosity of 1 . 1 fb − 1 collected during October 2024 with the upgraded (Upgrade I) LHCb detector. This angular distribution can be parameterised by two coefficients, the forward-backward asymmetry, A FB , and the flatness parameter, F H , whose values are constrained by conservation of angular momentum. These coefficients are measured both integrated and differentially across various kinematic and detector-response variables, and the results are found to be in good agreement with expectations. These measurements show that the detector response of the LHCb Upgrade I experiment is understood to the precision required to reliably extract the angular coefficients associated with rare b → sμ + μ − and b → dμ + μ − transitions, which are particularly sensitive to physics beyond the Standard Model.
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Contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Differential decay rate of B+ → J/ψK+ with the LHCb Upgrade I experiment
- Date Crossref
- 22/04/2026
- Éditeur
- Springer Science and Business Media LLC
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude et ne compte pas comme une seconde source scientifique indépendante.
Institutions déclarées
National Institute for Subatomic PhysicsUniversity of WarwickUniversity of ZurichUniversity of LiverpoolSyracuse UniversityUniversidade de Santiago de CompostelaUniversity of BristolUppsala UniversityCentre National de la Recherche ScientifiqueUniversité Paris-SaclayInstitut National de Physique Nucléaire et de Physique des ParticulesLaboratoire de Physique des 2 Infinis Irène Joliot-CurieUniversity of MichiganUniversité Clermont AuvergneLaboratoire de Physique de Clermont AuvergneAGH University of KrakowIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiTU Dortmund UniversityVilnius UniversityEuropean Organization for Nuclear ResearchUniversity of CambridgeSorbonne UniversitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesUniversidade Federal do Rio de JaneiroPeking UniversityIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeIstituto Nazionale di Fisica Nucleare, Sezione di FerraraUniversidade da CoruñaIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaUniversity of Chinese Academy of SciencesCommissariat à l'Énergie Atomique et aux Énergies AlternativesCEA Paris-Saclay - Etablissement de SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversIstituto Nazionale di Fisica Nucleare, Roma Tor VergataConsejo Nacional de RectoresKurchatov InstituteAix-Marseille UniversitéCentre de physique des particules de MarseilleFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicÉcole Polytechnique Fédérale de LausanneMassachusetts Institute of TechnologyÉcole PolytechniqueLaboratoire Leprince-RinguetUniversity of OxfordHeidelberg UniversityRuhr University BochumCentro Brasileiro de Pesquisas FísicasPontifícia Universidade Católica do Rio de JaneiroUniversity of ManchesterIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of EdinburghIstituto Nazionale di Fisica Nucleare, Sezione di PisaIstituto Nazionale di Fisica Nucleare, Sezione di GenovaIstituto Nazionale di Fisica Nucleare, Sezione di Roma ILomonosov Moscow State UniversityUniversitat Ramon LlullIstituto Nazionale di Fisica Nucleare, Sezione di PadovaTaras Shevchenko National University of KyivEötvös Loránd UniversityInstitute of Nuclear Physics, Polish Academy of SciencesUniversity of BonnImperial College LondonLaboratoire d’Annecy de Physique des ParticulesUniversité Savoie Mont BlancNational Research University Higher School of EconomicsLos Alamos National LaboratoryMaastricht UniversityAustralian Regenerative Medicine InstituteMonash UniversityPetersburg Nuclear Physics InstituteCracow University of TechnologyThe Ohio State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di CagliariWuhan UniversityUniversitat de BarcelonaIstituto Nazionale di Fisica Nucleare, Sezione di MilanoTsinghua UniversityHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of GlasgowUniversity of CincinnatiNational University of Science and TechnologyHunan UniversityUniversity of GroningenCentral China Normal UniversityUniversity College DublinSouth China Normal UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaRutherford Appleton LaboratoryUniversitat de ValènciaInstituto de Física CorpuscularUniversity of Maryland, College ParkInstitute for Nuclear ResearchKharkiv Institute of Physics and TechnologyUniversity of FreiburgRWTH Aachen UniversityUniversidad Nacional de ColombiaUniversity of BirminghamNational Research Tomsk State UniversityTomsk Polytechnic UniversityBudker Institute of Nuclear PhysicsYandex School of Data AnalysisHenan Normal UniversityLanzhou UniversityMax Planck Institute for Nuclear PhysicsUniversidad Andrés Bello Une affiliation ne permet pas de déduire la nationalité d’un auteur.
Sujets associés
Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsNeutrino Physics Research