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dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorCamboni, Alessandro
dc.contributor.authorVilasís Cardona, Xavier
dc.contributor.authorLHCb Collaboration - CERN
dc.date.accessioned2020-07-03T10:24:04Z
dc.date.accessioned2023-10-02T06:30:40Z
dc.date.available2020-07-03T10:24:04Z
dc.date.available2023-10-02T06:30:40Z
dc.date.created2012
dc.date.issued2012-09-17
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3261
dc.description.abstractThe decay ¯¯¯B0s→J/ψπ+π− can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state is performed using a 1.0  fb−1 sample of data produced in 7 TeV pp collisions at the LHC and collected by the LHCb experiment. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. The π+π− system is shown to be dominantly in an S-wave state, and the CP-odd fraction in this ¯¯¯B0s decay is shown to be greater than 0.977 at 95% confidence level. In addition, we report the first measurement of the J/ψπ+π− branching fraction relative to J/ψϕ of (19.79±0.47±0.52)%.eng
dc.format.extent20 p.cat
dc.language.isoengcat
dc.publisherAmerican Physical Societycat
dc.relation.ispartofPhysical Review D, 2012, Vol. 86 , No.5 (Setembre)cat
dc.rightsAttribution 4.0 International
dc.rights© CERN
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceRECERCAT (Dipòsit de la Recerca de Catalunya)
dc.subject.otherGran col·lisionador d'hadrons (França i Suïssa)cat
dc.subject.otherPartícules (Física nuclear)cat
dc.subject.otherCol·lisions (Física nuclear)cat
dc.titleAnalysis of the resonant components in ¯B0s → J/ψ π+ π−cat
dc.typeinfo:eu-repo/semantics/articlecat
dc.typeinfo:eu-repo/semantics/publishedVersioncat
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapcat
dc.subject.udc53
dc.identifier.doihttps://doi.org/10.1103/PhysRevD.86.052006cat


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Attribution 4.0 International
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