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 |
2020-07-01T13:58:50Z |
dc.date.available |
2020-07-01T13:58:50Z |
dc.date.created |
2015 |
dc.date.issued |
2015-10-16 |
dc.identifier.uri |
http://hdl.handle.net/2072/376217 |
dc.format.extent |
10 p. |
dc.language.iso |
eng |
dc.publisher |
American Physical Society |
dc.relation.ispartof |
Physical Review Letters, 2015, Vol. 115, No. 16 (Octubre) |
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.title |
Search for Hidden-Sector Bosons in B0→K*0μ+μ− Decays |
dc.type |
info:eu-repo/semantics/article |
dc.type |
info:eu-repo/semantics/publishedVersion |
dc.subject.udc |
53 - Física |
dc.embargo.terms |
cap |
dc.identifier.doi |
https://doi.org/10.1103/PhysRevLett.115.161802 |
dc.rights.accessLevel |
info:eu-repo/semantics/openAccess |
dc.description.abstract |
A search is presented for hidden-sector bosons, χ, produced in the decay B0→K∗(892)0χ, with K∗(892)0→K+π− and χ→μ+μ−. The search is performed using pp-collision data corresponding to 3.0 fb−1 collected with the LHCb detector. No significant signal is observed in the accessible mass range 214≤m(χ)≤4350 MeV, and upper limits are placed on the branching fraction product B(B0→K∗(892)0χ)×B(χ→μ+μ−) as a function of the mass and lifetime of the χ boson. These limits are of the order of 10−9 for χ lifetimes less than 100 ps over most of the m(χ) range, and place the most stringent constraints to date on many theories that predict the existence of additional low-mass bosons. |