dc.contributor |
Universitat Ramon Llull. La Salle |
dc.contributor |
CERN |
dc.contributor.author |
Badalov, Alexey |
dc.contributor.author |
Calvo Gómez, Míriam |
dc.contributor.author |
Vilasís Cardona, Xavier |
dc.contributor.author |
LHCb Collaboration - CERN |
dc.date.accessioned |
2020-07-23T08:51:38Z |
dc.date.available |
2020-07-23T08:51:38Z |
dc.date.created |
2015 |
dc.date.issued |
2015-12-07 |
dc.identifier.uri |
http://hdl.handle.net/2072/376555 |
dc.format.extent |
9 p. |
dc.language.iso |
eng |
dc.publisher |
American Physical Society |
dc.relation.ispartof |
Physical Review D, 2015, Vol. 92, No. 11 (Desembre) |
dc.rights |
L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by/4.0/ |
dc.rights |
© CERN |
dc.source |
RECERCAT (Dipòsit de la Recerca de Catalunya) |
dc.subject.other |
Gran col·lisionador d'hadrons (França i Suïssa) |
dc.subject.other |
Partícules (Física nuclear) |
dc.subject.other |
Col·lisions (Física nuclear) |
dc.title |
Search for the rare decays B0 → J/ψγ and B0s → J/ψγ |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/semantics/publishedVersion |
dc.subject.udc |
539 - Constitució física de la matèria |
dc.embargo.terms |
cap |
dc.identifier.doi |
https://doi.org/10.1103/PhysRevD.92.112002 |
dc.rights.accessLevel |
info:eu-repo/semantics/openAccess |
dc.description.abstract |
A search for the rare decay of a B0 or B0s meson into the final state J/ψγ is performed, using data collected by the LHCb experiment in pp collisions at √s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. The observed number of signal candidates is consistent with a background-only hypothesis. Branching fraction values larger than 1.5×10−6 for the B0→J/ψγ decay mode are excluded at 90% confidence level. For the B0s→J/ψγ decay mode, branching fraction values larger than 7.3×10−6 are excluded at 90% confidence level; this is the first branching fraction limit for this decay. |