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Observation of the decay B0s → ψ(2S) K+ π−
| dc.contributor | Universitat Ramon Llull. La Salle | |
| dc.contributor | CERN | |
| dc.contributor.author | Calvo Gómez, Míriam | |
| dc.contributor.author | Vilasís Cardona, Xavier | |
| dc.contributor.author | LHCb Collaboration - CERN | |
| dc.date.accessioned | 2020-11-20T06:10:25Z | |
| dc.date.accessioned | 2023-10-02T06:26:59Z | |
| dc.date.available | 2020-11-20T06:10:25Z | |
| dc.date.available | 2023-10-02T06:26:59Z | |
| dc.date.created | 2015 | |
| dc.date.issued | 2015-07-30 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14342/3157 | |
| dc.description.abstract | The decay B-0s → ψ(2S)K+π- is observed using a data set corresponding to an integrated luminosity of 3.0fb-1 collected by the LHCb experiment in pp collisions 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, where fs/fd indicates the uncertainty due to the ratio of probabilities for a b quark to hadronise into a B0s or B0 meson. Using an amplitude analysis, the fraction of decays proceeding via an intermediate K*(892)0 meson 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. In addition, the mass splitting between the B0s and B0 mesons is measured as M(B0s)-M(B0)=87.45±0.44(stat)±0.09(syst)MeV/c2. | eng |
| dc.format.extent | 11 p. | cat |
| dc.language.iso | eng | cat |
| dc.publisher | Elsevier | cat |
| dc.relation.ispartof | Physics Letters B , 2015, Vol. 747, (Juliol) | cat |
| dc.rights | Attribution 4.0 International | |
| dc.rights | © CERN | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.source | RECERCAT (Dipòsit de la Recerca de Catalunya) | |
| dc.subject.other | Gran col·lisionador d'hadrons (França i Suïssa) | cat |
| dc.subject.other | Partícules (Física nuclear) | cat |
| dc.subject.other | Col·lisions (Física nuclear) | cat |
| dc.title | Observation of the decay B0s → ψ(2S) K+ π− | cat |
| dc.type | info:eu-repo/semantics/article | cat |
| dc.type | info:eu-repo/semantics/publishedVersion | cat |
| dc.rights.accessLevel | info:eu-repo/semantics/openAccess | |
| dc.embargo.terms | cap | cat |
| dc.subject.udc | 53 | |
| dc.identifier.doi | https://doi.org/10.1016/j.physletb.2015.06.038 | cat |
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