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dc.contributorUniversitat Ramon Llull. La Salle
dc.contributorCERN
dc.contributor.authorBadalov, Alexey
dc.contributor.authorCalvo Gómez, Míriam
dc.contributor.authorVilasís Cardona, Xavier
dc.contributor.authorLHCb Collaboration - CERN
dc.date.accessioned2021-05-07T04:24:49Z
dc.date.accessioned2023-10-02T06:48:50Z
dc.date.available2021-05-07T04:24:49Z
dc.date.available2023-10-02T06:48:50Z
dc.date.created2015-05
dc.date.issued2015-08
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3490
dc.description.abstractThe resonant substructures of B0 → D¯ 0πþπ− decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collisions collected by the LHCb detector is used. The branching fraction of the B0 → D¯ 0πþπ− decay in the region mðD¯ 0πÞ > 2.1 GeV=c2 is measured to be ð8.46 0.14 0.29 0.40Þ × 10−4, where the first uncertainty is statistical, the second is systematic and the last arises from the normalization channel B0 → Dð2010Þ−πþ. The πþπ− S-wave components are modeled with the isobar and K-matrix formalisms. Results of the Dalitz plot analyses using both models are presented. A resonant structure at mðD¯ 0π−Þ ≈ 2.8 GeV=c2 is confirmed and its spin-parity is determined for the first time as JP ¼ 3−. The branching fraction, mass and width of this structure are determined together with those of the D 0ð2400Þ− and D 2ð2460Þ− resonances. The branching fractions of other B0 → D¯ 0h0 decay components with h0 → πþπ− are also reported. Many of these branching fraction measurements are the most precise to date. The first observation of the decays B0 → D¯ 0f0ð500Þ, B0 → D¯ 0f0ð980Þ, B0 → D¯ 0ρð1450Þ, B0 → D 3ð2760Þ−πþ and the first evidence of B0 → D¯ 0f0ð2020Þ are presented.eng
dc.format.extent40 p.cat
dc.language.isoengcat
dc.publisherAmerican Physical Societycat
dc.relation.ispartofPhysical Review D, 2015, Vol. 92, No. 3cat
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.titleDalitz plot analysis of B0 → D¯ 0πþπ− decayscat
dc.typeinfo:eu-repo/semantics/articlecat
dc.typeinfo:eu-repo/semantics/publishedVersioncat
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapcat
dc.subject.udc539
dc.identifier.doihttps://doi.org/10.1103/PhysRevD.92.032002cat


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Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/
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