dc.contributor |
Universitat Ramon Llull. La Salle |
dc.contributor |
CERN |
dc.contributor.author |
Calvo Gómez, Míriam |
dc.contributor.author |
Camboni, Alessandro |
dc.contributor.author |
Vilasís Cardona, Xavier |
dc.contributor.author |
LHCb Collaboration - CERN |
dc.date.accessioned |
2020-07-03T10:27:58Z |
dc.date.available |
2020-07-03T10:27:58Z |
dc.date.created |
2012 |
dc.date.issued |
2012-03-19 |
dc.identifier.uri |
http://hdl.handle.net/2072/376275 |
dc.format.extent |
8 p. |
dc.language.iso |
eng |
dc.publisher |
Elsevier |
dc.relation.ispartof |
Physics Letters B , 2012, Vol. 709, No. 3 (Març) |
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-nc-nd/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 |
Col·lisions (Física nuclear) |
dc.subject.other |
Partícules (Física nuclear) |
dc.title |
Measurement of the B^0_s - \bar{B}^0_s oscillation frequency Delta m_s in B^0_s → D_s^-(3) π 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/10.1016/j.physletb.2012.02.031 |
dc.rights.accessLevel |
info:eu-repo/semantics/openAccess |
dc.description.abstract |
The B^0_s-\bar{B}^0_s oscillation frequency Delta m_s is measured with 36 pb^{-1} of data collected in pp collisions at \sqrt{s} = 7 TeV by the LHCb experiment at the Large Hadron Collider. A total of 1381 B^0_s -> D_s^- \pi^+ and \B^0_s -> D_s^- pi^+ pi^- pi^+ signal decays are reconstructed, with average decay time resolutions of 44 fs and 36 fs, respectively. An oscillation signal with a statistical significance of 4.6 sigma is observed. The measured oscillation frequency is Delta m_s = 17.63 \pm 0.11 (stat) \pm 0.02 (syst) ps^{-1}. |