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Accès ouvert déclaré 2026 article

A model-independent measurement of the CKM angle γ in the decays B± → [K+K−π+π−]Dh± and B± → [π+π−π+π−]Dh± (h = K, π)

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127Institutions déclarées
24Pays d’affiliation déclarés

Résumé fourni par la source

A bstract A model-independent determination of the CKM angle γ is presented, using the B ± → [ K + K − π + π − ] D h ± and B ± → [ π + π − π + π − ] D h ± decays, with h = K, π . This measurement is the first phase-space binned study of these decay modes, and uses a sample of proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb − 1 . The phase-space bins are optimised for sensitivity to γ , and in each bin external inputs from the BESIII experiment are used to constrain the charm strong-phase parameters. The result of this binned analysis is $$ \gamma ={\left(53.{9}_{-8.9}^{+9.5}\right)}^{{}^{\circ}} $$ γ = 53 . 9 − 8.9 + 9.5 ° , where the uncertainty includes both statistical and systematic contributions. Furthermore, when combining with existing phase-space integrated measurements of the same decay modes, a value of $$ \gamma ={\left(52.{6}_{-6.4}^{+8.5}\right)}^{{}^{\circ}} $$ γ = 52 . 6 − 6.4 + 8.5 ° is obtained, which is one of the most precise determinations of γ to date.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
A model-independent measurement of the CKM angle γ in the decays B± → [K+K−π+π−]Dh± and B± → [π+π−π+π−]Dh± (h = K, π)
Date Crossref
09/01/2026
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 AuvergneIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiTU Dortmund UniversityMachine Intelligence Research InstituteLamarr Institute for Machine Learning and Artificial IntelligenceVilnius UniversityEuropean Organization for Nuclear ResearchUniversity of ManchesterUniversity of CambridgeDélégation Paris 7Université Paris CitéSorbonne UniversitéSorbonne Paris CitéLaboratoire 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 Milano-BicoccaUniversity of Chinese Academy of SciencesUniversity of Rome Tor VergataIstituto Nazionale di Fisica Nucleare, Roma Tor VergataConsejo Nacional de RectoresAix-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 TechnologyCommissariat à l'Énergie Atomique et aux Énergies AlternativesCEA Paris-Saclay - Etablissement de SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversÉcole PolytechniqueLaboratoire Leprince-RinguetUniversity of OxfordHeidelberg UniversityPontifícia Universidade Católica do Rio de JaneiroIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of EdinburghJagiellonian UniversityAGH University of KrakowIstituto Nazionale di Fisica Nucleare, Sezione di PisaCentro Brasileiro de Pesquisas FísicasIstituto Nazionale di Fisica Nucleare, Sezione di GenovaIstituto Nazionale di Fisica Nucleare, Sezione di Roma IUniversitat Ramon LlullIstituto Nazionale di Fisica Nucleare, Sezione di PadovaTaras Shevchenko National University of KyivInstitute of Nuclear Physics, Polish Academy of SciencesUniversity of BonnImperial College LondonLaboratoire d’Annecy de Physique des ParticulesUniversité Savoie Mont BlancUniversity of Modena and Reggio EmiliaUniversity of VictoriaLos Alamos National LaboratoryMaastricht UniversityUniversity of FerraraAustralian Regenerative Medicine InstituteMonash UniversityCracow University of TechnologyThe Ohio State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di CagliariUniversity of PaduaWuhan UniversityUniversitat de BarcelonaUniversidade Estadual de Campinas (UNICAMP)University of BolognaUniversity of GenoaUniversity of MilanIstituto Nazionale di Fisica Nucleare, Sezione di MilanoTsinghua UniversityEötvös Loránd UniversityHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of GlasgowUniversity of CincinnatiNational Autonomous University of HondurasHunan UniversityUniversity of CagliariUniversity of GroningenFederal Center for Technological Education Celso Suckow da FonsecaUniversity of Bari Aldo MoroCentral China Normal UniversityUniversity College DublinSouth China Normal UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaRutherford Appleton LaboratoryUniversity of PerugiaUniversitat de ValènciaInstituto de Física CorpuscularUniversity of Maryland, College ParkKharkiv Institute of Physics and TechnologyUniversity of FreiburgLIP6University of PisaUniversity College of Applied ScienceRWTH Aachen UniversityUniversidad Nacional de ColombiaUniversity of BirminghamScuola Normale SuperioreHenan Normal UniversityLanzhou UniversityUniversity of BergamoRuhr University BochumUniversidad de Ingeniería y TecnologíaUniversity of SienaUniversity of BasilicataMax Planck Institute for Nuclear PhysicsUniversidad de AlcaláUniversity of Urbino

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