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Measurement of CP violation in the $$ {B}_s^0\to \phi \phi $$ decay and search for the B0→ ϕϕ decay

17Citations signalées, ce qui n’est pas une note de qualité
116Institutions déclarées
19Pays d’affiliation déclarés

Rattachement africain : nl, ch, es, gb, us, fr, it, de, ru, br, pl, cn, ro, ua, Algérie, ph, ie, co, vn. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

Abstract A measurement of the time-dependent CP-violating asymmetry in $$ {B}_s^0\to \phi \phi $$ B s 0 → ϕϕ decays is presented. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.0 fb −1 collected by the LHCb experiment at centre-of-mass energies $$ \sqrt{s} $$ s = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 $$ {B}_s^0\to \phi \phi $$ B s 0 → ϕϕ decays is obtained. The CP-violating phase $$ {\phi}_s^{s\overline{s}s} $$ ϕ s s s ¯ s is measured to be −0.073 ± 0.115(stat) ± 0.027(syst) rad, under the assumption it is independent of the helicity of the ϕϕ decay. In addition, the CP-violating phases of the transverse polarisations under the assumption of CP conservation of the longitudinal phase are measured. The helicity-independent direct CP-violation parameter is also measured, and is found to be |λ| = 0.99 ± 0.05(stat) ± 0.01(syst). In addition, T-odd triple-product asymmetries are measured. The results obtained are consistent with the hypothesis of CP conservation in $$ \overline{b}\to \overline{s}s\overline{s}s $$ b ¯ → s ¯ s s ¯ s transitions. Finally, a limit on the branching fraction of the B 0 → ϕϕ decay is determined to be $$ \mathcal{B}\left({B}^0\to \phi \phi \right)<2.7\times {10}^{-8} $$ B B 0 → ϕϕ < 2.7 × 10 − 8 at 90 % confidence level.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Measurement of CP violation in the $$ {B}_s^0\to \phi \phi $$ decay and search for the B0→ ϕϕ decay
Date Crossref
01/12/2019
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 il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

National Institute for Subatomic PhysicsUniversity of ZurichUniversidade de Santiago de CompostelaUniversity of BristolUniversity of MichiganCentre National de la Recherche ScientifiqueUniversité Clermont AuvergneInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of CincinnatiIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiTU Dortmund UniversityEuropean Organization for Nuclear ResearchUniversity of GlasgowUniversitat de BarcelonaPetersburg Nuclear Physics InstituteImperial College LondonUniversidade Federal do Rio de JaneiroUniversité Paris-SudUniversité Paris-SaclayIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeÉcole Polytechnique Fédérale de LausanneIstituto Nazionale di Fisica Nucleare, Sezione di FerraraUniversity of Maryland, College ParkAix-Marseille UniversitéCentre de physique des particules de MarseilleKurchatov InstituteInstitute for High Energy PhysicsSyracuse UniversityYandex School of Data AnalysisIstituto Nazionale di Fisica Nucleare, Sezione di CagliariHeidelberg UniversityUniversity of WarwickLaboratoire Leprince-RinguetUniversity of ManchesterIstituto Nazionale di Fisica Nucleare, Sezione di GenovaNational University of Science and TechnologyNational Centre for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di PisaCentro Brasileiro de Pesquisas FísicasUniversity of Chinese Academy of SciencesDélégation Paris 7Université Paris CitéSorbonne UniversitéSorbonne Paris CitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesRWTH Aachen UniversityLomonosov Moscow State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PadovaIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of BolognaUniversity of CambridgeInstitute of Nuclear Physics, Polish Academy of SciencesUniversity of BirminghamUniversity of Modena and Reggio EmiliaUniversity of OxfordIstituto Nazionale di Fisica Nucleare, Sezione di Roma IMassachusetts Institute of TechnologyNational Research University Higher School of EconomicsNovosibirsk State UniversitySiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsUniversity of LiverpoolWuhan UniversityUniversity of FerraraIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaUniversity of Milano-BicoccaUniversitat Ramon LlullIstituto Nazionale di Fisica Nucleare, Roma Tor VergataUniversity of PisaUniversité Savoie Mont BlancUniversité Grenoble AlpesTsinghua UniversityUK Astronomy Technology CentreUniversity of EdinburghHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringLos Alamos National LaboratoryLos Alamos National Security (United States)Istituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of Bari Aldo MoroMax Planck Institute for Nuclear PhysicsAGH University of KrakowCentral China Normal UniversityIstituto Nazionale di Fisica Nucleare, Sezione di TriesteKharkiv Institute of Physics and TechnologyRutherford Appleton LaboratoryInstitute for Nuclear ResearchUniversity of GenoaUniversity of MilanIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversitat de ValènciaInstituto de Física CorpuscularPontifícia Universidade Católica do Rio de JaneiroUniversidade Federal do Triângulo MineiroUniversity of RostockUniversity Frères Mentouri Constantine 1National Research Tomsk State UniversityTomsk Polytechnic UniversityInstitute for Nuclear ResearchSouth China Normal UniversityLanzhou UniversityInstitute of High Energy PhysicsUniversity of PaduaUniversity of CagliariMindanao State University – Iligan Institute of TechnologyUniversity College DublinUniversidad Nacional de ColombiaScuola Normale SuperioreVNU University of ScienceUniversity of GroningenP.N. Lebedev Physical Institute of the Russian Academy of SciencesUniversity of Rome Tor VergataSapienza University of RomeUniversity of BasilicataUniversity of UrbinoHunan UniversityShaanxi Normal University

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research

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