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Measurement of CP asymmetry in $$ {\textrm{B}}_{\textrm{s}}^0\to {\textrm{D}}_{\textrm{s}}^{\mp }{\textrm{K}}^{\pm } $$ decays

2Citations signalées — pas une note de qualité
122Institutions déclarées
21Pays d’affiliation déclarés

Résumé fourni par la source

A bstract A measurement of the CP -violating parameters in $$ {B}_s^0\boldsymbol{\to}{D}_s^{\mp }{K}^{\pm} $$ B s 0 → D s ∓ K ± decays is reported, based on the analysis of proton-proton collision data collected by the LHCb experiment corresponding to an integrated luminosity of 6 fb − 1 at a centre-of-mass energy of 13 TeV. The measured parameters are obtained with a decay-time dependent analysis yielding C f = 0.791 ± 0.061 ± 0.022, $$ {A}_f^{\Delta \Gamma} $$ A f ∆ Γ = −0.051 ± 0.134 ± 0.058, $$ {A}_{\overline{f}}^{\Delta \Gamma} $$ A f ¯ ∆ Γ = −0.303 ± 0.125 ± 0.055, S f = −0.571 ± 0.084 ± 0.023 and $$ {S}_{\overline{f}} $$ S f ¯ = −0.503 ± 0.084 ± 0.025, where the first uncertainty is statistical and the second systematic. This corresponds to CP violation in the interference between mixing and decay of about 8.6 σ . Together with the value of the $$ {B}_s^0 $$ B s 0 mixing phase −2 β s , these parameters are used to obtain a measurement of the CKM angle γ equal to (74 ± 12)° modulo 180°, where the uncertainty contains both statistical and systematic contributions. This result is combined with the previous LHCb measurement in this channel using 3 fb − 1 resulting in a determination of $$ \gamma ={\left({81}_{-11}^{+12}\right)}^{\circ } $$ γ = 81 − 11 + 12 ∘ .

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Measurement of CP asymmetry in $$ {\textrm{B}}_{\textrm{s}}^0\to {\textrm{D}}_{\textrm{s}}^{\mp }{\textrm{K}}^{\pm } $$ decays
Date Crossref
19/03/2025
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 AuvergneUniversity of CincinnatiIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiTU Dortmund UniversityMachine Intelligence Research InstituteLamarr Institute for Machine Learning and Artificial IntelligenceEuropean Organization for Nuclear ResearchUniversity of GlasgowUniversity 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 FerraraIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaUniversity of Milano-BicoccaInstitute of High Energy PhysicsUniversity 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 TechnologyÉcole PolytechniqueLaboratoire Leprince-RinguetUniversity of OxfordUniversité Savoie Mont BlancHeidelberg UniversityCommissariat à l'Énergie Atomique et aux Énergies AlternativesCEA Paris-Saclay - Etablissement de SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversPontifícia Universidade Católica do Rio de JaneiroIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of EdinburghRWTH Aachen UniversityJagiellonian UniversityAGH University of KrakowScuola Normale SuperioreIstituto 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 PadovaInstitute of Nuclear Physics, Polish Academy of SciencesImperial College LondonMaastricht UniversityUniversity of FerraraUniversity of PaduaUniversitat de BarcelonaIstituto Nazionale di Fisica Nucleare, Sezione di CagliariWuhan UniversityUniversity of BolognaUniversity of GenoaUniversity of MilanIstituto Nazionale di Fisica Nucleare, Sezione di MilanoInstitute for Nuclear ResearchUniversidade da CoruñaHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringIstituto Nazionale di Fisica Nucleare, Sezione di BariNational Autonomous University of HondurasLos Alamos National LaboratoryHunan UniversityState Key Laboratory of Nuclear Physics and TechnologyUniversity of CagliariUniversity of GroningenFederal Center for Technological Education Celso Suckow da FonsecaUniversity of Bari Aldo MoroAustralian Regenerative Medicine InstituteMonash UniversityCentral China Normal UniversityEötvös Loránd UniversityTsinghua UniversityUniversity College DublinSouth China Normal UniversityCracow University of TechnologyIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaRutherford Appleton LaboratoryUniversity of BonnMax Planck Institute for Nuclear PhysicsUniversity of PerugiaUniversitat de ValènciaInstituto de Física CorpuscularUniversity of Maryland, College ParkLIP6National Centre for Nuclear ResearchUniversidade de BrasíliaUniversity of PisaUniversidad Nacional de ColombiaUniversity of BirminghamKharkiv Institute of Physics and TechnologyLanzhou UniversityHenan UniversityUniversity of BergamoRuhr University BochumUniversity of SienaUniversity of BasilicataUniversidad de AlcaláUniversity of Urbino

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Sujets associés

Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsNeutrino Physics Research

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