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Time-dependent angular analysis of the decay $ B_s^0\to {J \left/ {{\psi \phi }} \right.} $ and extraction of ΔΓ s and the CP-violating weak phase ϕ s by ATLAS

45Citations signalées, ce qui n’est pas une note de qualité
243Institutions déclarées
39Pays d’affiliation déclarés

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Le résumé fourni par la source

Abstract A measurement of $ B_s^0\to {J \left/ {{\psi \phi }} \right.} $ decay parameters, including the CP -violating weak phase ϕ s and the decay width difference ΔΓ s is reported, using 4.9 fb−1 of integrated luminosity collected in 2011 by the ATLAS detector from LHC pp collisions at a centre-of-mass energy $ \sqrt{s}=7 $ TeV. The mean decay width Γ s and the transversity amplitudes |A 0(0)|2 and |A ∥(0)|2 are also measured. The values reported for these parameters are: $ \begin{array}{*{20}{c}} {{\phi_s}=0.22 \pm 0.41\ \left( {\mathrm{s}\mathrm{tat}.} \right) \pm 0.10\ \left( {\mathrm{s}\mathrm{yst}.} \right)\ \mathrm{rad}} \\ {\varDelta {\varGamma_s}=0.053 \pm 0.021\ \left( {\mathrm{s}\mathrm{tat}.} \right) \pm 0.010\ \left( {\mathrm{s}\mathrm{yst}.} \right)\ \mathrm{p}{{\mathrm{s}}^{-1 }}} \\ {{\varGamma_s}=0.677 \pm 0.007\ \left( {\mathrm{s}\mathrm{tat}.} \right) \pm 0.004\ \left( {\mathrm{s}\mathrm{yst}.} \right)\ \mathrm{p}{{\mathrm{s}}^{-1 }}} \\ {|{A_0}(0){|^2} = 0.528 \pm 0.006\ \left( {\mathrm{s}\mathrm{tat}.} \right) \pm 0.009\ \left( {\mathrm{s}\mathrm{yst}.} \right)} \\ {|{A_{\parallel }}(0){|^2} = 0.220 \pm 0.008\ \left( {\mathrm{s}\mathrm{tat}.} \right) \pm 0.007\ \left( {\mathrm{s}\mathrm{yst}.} \right)} \\ \end{array} $ where the values quoted for ϕ s and ΔΓ s correspond to the solution compatible with the external measurements to which the strong phase δ ⊥ is constrained and where ΔΓs is constrained to be positive. The fraction of S-wave KK or f 0 contamination through the decays $ B_s^0\to {J \left/ {{\psi {K^{+}}{K^{-}}\left( {{f_0}} \right)}} \right.} $ is measured as well and is found to be consistent with zero. Results for ϕ s and ΔΓ s are also presented as 68%, 90% and 95% likelihood contours, which show agreement with Standard Model expectations.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Time-dependent angular analysis of the decay $ B_s^0\to {J \left/ {{\psi \phi }} \right.} $ and extraction of ΔΓ s and the CP-violating weak phase ϕ s by ATLAS
Date Crossref
01/12/2012
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

University of FreiburgUniversity of BonnUniversity of OklahomaInstitució Catalana de Recerca i Estudis AvançatsUniversitat Autònoma de BarcelonaInstitute for High Energy PhysicsUniversité Paris-SudCentre National de la Recherche ScientifiqueInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of GenevaAzerbaijan National Academy of SciencesNational Institute for Subatomic PhysicsUniversity of AmsterdamInstitute of Nuclear Physics, Polish Academy of SciencesMichigan State UniversityUniversity of TorontoTel Aviv UniversityCommissariat à l'Énergie Atomique et aux Énergies AlternativesCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversity of UdineIstituto Nazionale di Fisica Nucleare, Gruppo Collegato di UdineAGH University of KrakowBrookhaven National LaboratoryHampton UniversityYale UniversityLudwig-Maximilians-Universität MünchenQueen Mary University of LondonRutherford Appleton LaboratoryBrandeis UniversityLIP - Laboratory of Instrumentation and Experimental Particle PhysicsUniversity of BernJohannes Gutenberg University MainzBoston UniversityStony Brook UniversityThe University of Texas at DallasIstituto Nazionale di Fisica Nucleare, Roma Tor VergataBoğaziçi UniversityLund UniversityThe University of TokyoP.N. Lebedev Physical Institute of the Russian Academy of SciencesUniversity at Albany, State University of New YorkUniversity of VictoriaUniversité Joseph FourierLaboratoire de Physique Subatomique et de CosmologieEuropean Organization for Nuclear ResearchJoint Institute for Nuclear ResearchNational Technical University of AthensHumboldt-Universität zu BerlinUniversity of PennsylvaniaUniversity of BirminghamUniversity of LiverpoolUniversity of GlasgowUniversity of ManchesterIstituto Nazionale di Fisica Nucleare, Sezione di NapoliWeizmann Institute of ScienceConsejo Nacional de Investigaciones Científicas y TécnicasInstituto de Física La PlataUniversidad Nacional de La PlataHigh Energy Accelerator Research OrganizationInstitute for High Energy PhysicsColumbia UniversityHeidelberg UniversityFermi National Accelerator LaboratoryUniversity of ChicagoTechnische Universität DresdenSiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiNational and Kapodistrian University of AthensNational Research Nuclear University MEPhISlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesIstituto Nazionale di Fisica Nucleare, Sezione di Roma IObayashi (Japan)Nagoya UniversityAix-Marseille UniversitéCentre de physique des particules de MarseilleLaboratoire d’Annecy de Physique des ParticulesUniversity of OxfordSLAC National Accelerator LaboratoryDuke UniversityLawrence Berkeley National LaboratoryUniversity of California, BerkeleyUniversity of MichiganUniversidad Autónoma de MadridInstitute for Theoretical and Experimental PhysicsUniversity of Wisconsin–MadisonUniversity of CambridgeStockholm UniversityArgonne National LaboratoryUniversity of Illinois Urbana-ChampaignCzech Technical University in PragueUniversity of JohannesburgUniversity of California, IrvineUniversity of British ColumbiaInstitute of Particle PhysicsUniversité de MontréalIstituto Nazionale di Fisica Nucleare, Sezione di Roma TreUniversity of AlbertaChinese Academy of SciencesInstitute of High Energy PhysicsUniversity College LondonThe University of SydneyThe University of MelbourneIstituto Nazionale di Fisica Nucleare, Sezione di GenovaMax Planck Institute for PhysicsUniversity of WuppertalHarvard UniversityLancaster UniversityUniversity of SussexComenius University BratislavaUniversité Paris CitéSorbonne UniversitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesTufts UniversityUniversity of WashingtonGaziantep UniversityTechnion – Israel Institute of TechnologyMcGill UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of Hassan II CasablancaYork UniversityUniversity of ReginaRoyal Holloway University of LondonIstituto Nazionale di Fisica Nucleare, Sezione di PisaRadboud University NijmegenUniversity of EdinburghIstituto Nazionale di Fisica Nucleare, Sezione di LecceUniversity of GöttingenCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesUniversity of CopenhagenNational Academy of Sciences of BelarusB.I. Stepanov Institute of PhysicsCzech Academy of SciencesFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicUniversity of SheffieldUniversity of BelgradeUniversity of PittsburghUniversité Clermont AuvergneLaboratoire de Physique de Clermont AuvergneClermont UniversitéThe University of Texas at ArlingtonTokyo Metropolitan UniversityUniversity of Massachusetts AmherstUniversity of OregonUppsala UniversityFederico Santa María Technical UniversityIndiana University BloomingtonUniversity of BergenUniversity of SiegenNew York UniversityUniversity of OsloTU Dortmund UniversityUniversitat de ValènciaInstituto de Física CorpuscularInstitut de Microelectrònica de BarcelonaUniversity of BolognaAnkara UniversityNorthern Illinois UniversityUniversidade Federal do Rio de JaneiroTRIUMFAzienda Ospedaliera di CosenzaIstituto Nazionale di Fisica Nucleare, Gruppo Collegato di CosenzaUniversidade Federal de Juiz de ForaDoğuş UniversityCharles UniversityMohammed V UniversityUniversity of ArizonaTbilisi State UniversityUniversity of California, Santa CruzInstitute of Physics, Academia SinicaUniversity of LjubljanaJožef Stefan InstituteIowa State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PaviaUniversitatea Națională de Știință și Tehnologie Politehnica BucureștiSimon Fraser UniversityMohamed I UniversityPontificia Universidad Católica de ChileSouthern Methodist UniversityFederal University of São João del-ReiUniversidade de São PauloJustus-Liebig-Universität GießenCadi Ayyad UniversityUniversität InnsbruckUniversity of WarwickPetersburg Nuclear Physics InstituteShandong UniversityThe Ohio State UniversityUniversity of WürzburgNational Centre for Nuclear Energy, Science and TechnologyCarleton UniversityLomonosov Moscow State UniversityUniversidad de Buenos AiresUniversity of New MexicoA. Alikhanyan National LaboratoryPalacký University OlomoucUniversity of the WitwatersrandUniversity of Science and Technology of ChinaThe University of OsakaUniversity of TsukubaShinshu UniversityKobe UniversityAristotle University of ThessalonikiKyoto UniversityTokyo Institute of TechnologyThe University of AdelaideKTH Royal Institute of TechnologyKyushu UniversityOklahoma State UniversityWaseda UniversityUniversity of CalabriaUniversity of IowaUniversidad Antonio NariñoUniversity of Rome Tor VergataHiroshima Institute of TechnologyOkayama University of ScienceUniversity of SalentoUniversity of GenoaUniversity of South CarolinaCalifornia Institute of TechnologyUniversity of MilanJagiellonian UniversityInstitute of PhysicsUniversity of PisaLouisiana Tech UniversityNagasaki Institute of Applied ScienceTOBB University of Economics and TechnologyRoma Tre UniversityKyoto University of EducationRitsumeikan UniversityMassachusetts Institute of TechnologyNovosibirsk State UniversityInstitute for Particle and Nuclear PhysicsHUN-REN Wigner Research Centre for PhysicsTurkish Atomic Energy AuthorityUniversity of PaviaUniversität HamburgUniversity of CoimbraGazi UniversitySapienza University of Rome

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Les sujets associés

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

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