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dc.contributor.authorLHCb Collaboration
dc.contributor.authorAdeva Andany, Bernardo
dc.contributor.authorDosil Suárez, Álvaro
dc.contributor.authorFernández Albor, Víctor Manuel
dc.contributor.authorGallas Torreira, Abraham Antonio
dc.contributor.authorGarcía Pardiñas, Julián
dc.contributor.authorHernando Morata, José Ángel
dc.contributor.authorPlo Casasus, Máximo
dc.contributor.authorRomero Vidal, Antonio
dc.contributor.authorSaborido Silva, Juan José
dc.contributor.authorSanmartín Sedes, Brais
dc.contributor.authorSantamarina Ríos, Cibrán
dc.contributor.authorVázquez Regueiro, Pablo
dc.contributor.authorVieites Díaz, María
dc.date.accessioned2020-04-28T09:07:29Z
dc.date.available2020-04-28T09:07:29Z
dc.date.issued2015
dc.identifier.citationLHCb Collaboration et al. (2015). Observation of the decay B0s→ψ(2S)K+π−. Physics Letters B, 747, 484-494
dc.identifier.issn0370-2693
dc.identifier.urihttp://hdl.handle.net/10347/21834
dc.description.abstractThe decay B0s→ψ(2S)K+π−is observed using a data set corresponding to an integrated luminosity of 3.0fb−1collected by the LHCb experiment in ppcollisions at centre-of-mass energies of 7 and 8 TeV. The branching fraction relative to the B0→ψ(2S)K+π−decay mode is measured to be B(B0s→ψ(2S)K+π−)B(B0→ψ(2S)K+π−)=5.38±0.36(stat)±0.22(syst)±0.31(fs/fd)%, where fs/fdindicates the uncertainty due to the ratio of probabilities for a bquark to hadronise into a B0sor B0meson. Using an amplitude analysis, the fraction of decays proceeding via an intermediate K∗(892)0meson is measured to be 0.645 ±0.049 (stat) ±0.049 (syst)and its longitudinal polarisation fraction is 0.524 ±0.056 (stat) ±0.029 (syst). The relative branching fraction for this component is determined to be B(B0s→ψ(2S)K∗(892)0)B(B0→ψ(2S)K∗(892)0)=5.58±0.57(stat)±0.40(syst)±0.32(fs/fd)%. In addition, the mass splitting between the B0sand B0mesons is measured as M(B0s)−M(B0)=87.45±0.44(stat)±0.09(syst)MeV/c2
dc.language.isoeng
dc.publisherElsevier
dc.rights©2015 CERN for the benefit of the LHCb Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleObservation of the decay B0s→ψ(2S)K+π−
dc.typejournal article
dc.identifier.doi10.1016/j.physletb.2015.06.038
dc.relation.publisherversionhttps://doi.org/10.1016/j.physletb.2015.06.038
dc.type.hasVersionVoR
dc.identifier.essn1873-2445
dc.rights.accessRightsopen access
dc.contributor.affiliationUniversidade de Santiago de Compostela. Departamento de Física de Partículas
dc.contributor.affiliationUniversidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE)
dc.description.peerreviewedSI


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©2015 CERN for the benefit of the LHCb Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3
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 ©2015 CERN for the benefit of the LHCb Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3





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