Mostra el registre parcial de l'element

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.accessioned2020-05-08T13:26:51Z
dc.date.accessioned2023-10-02T06:38:51Z
dc.date.available2020-05-08T13:26:51Z
dc.date.available2023-10-02T06:38:51Z
dc.date.created2011
dc.date.issued2011
dc.identifier.urihttp://hdl.handle.net/20.500.14342/3382
dc.description.abstractUsing data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the semileptonic decays Bs -> Ds+ X mu nu and Bs -> D0 K+ X mu nu are detected. Two structures are observed in the D0 K+ mass spectrum at masses consistent with the known D^+_{s1}(2536) and $D^{*+}_{s2}(2573) mesons. The measured branching fractions relative to the total Bs semileptonic rate are B(Bs -> D_{s2}^{*+} X mu nu)/B(Bs -> X mu nu)= (3.3\pm 1.0\pm 0.4)%, and B(Bs -> D_{s1}^+ X munu)/B(Bs -> X mu nu)= (5.4\pm 1.2\pm 0.5)%, where the first uncertainty is statistical and the second is systematic. This is the first observation of the D_{s2}^{*+} state in Bs decays; we also measure its mass and width.
dc.format.extent7 p.
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofPhysics Letters B, Vol. 698, No. 1 (Març 2011)
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights© CERN
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceRECERCAT (Dipòsit de la Recerca de Catalunya)
dc.subject.otherGran col·lisionador d'hadrons (França i Suïssa)
dc.subject.otherPartícules (Física nuclear)
dc.subject.otherCol·lisions (Física nuclear)
dc.subject.otherProtons
dc.titleFirst observation of B0 → D∗+ Xμ−ν decays
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscap
dc.subject.udc53
dc.identifier.doihttps://doi.org/10.1016/j.physletb.2011.02.039


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Mostra el registre parcial de l'element

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