Measurements of the branching fractions and CP asymmetries of B± → J/ψ π± and B± → ψ(2S) π± decays

All of RECERCAT

Use this identifier to quote or link this document: http://hdl.handle.net/2072/376277

Title:	Measurements of the branching fractions and CP asymmetries of B± → J/ψ π± and B± → ψ(2S) π± decays
Author:	Calvo Gómez, Míriam; Camboni, Alessandro; Vilasís Cardona, Xavier; LHCb Collaboration - CERN
Other authors:	Universitat Ramon Llull. La Salle; CERN
Abstract:	A study of B±→J/ψπ± and B±→ψ(2S)π± decays is performed with data corresponding to 0.37 fb−1 of proton-proton collisions at √s=7 TeV. Their branching fractions are found to be B(B±→J/ψπ±)=(3.88±0.11±0.15)×10−5andB(B±→ψ(2S)π±)=(2.52±0.26±0.15)×10−5,where the first uncertainty is related to the statistical size of the sample and the second quantifies systematic effects. The measured CP asymmetries in these modes are AJ/ψπCP=0.005±0.027±0.011andAψ(2S)πCP=0.048±0.090±0.011 with no evidence of direct CP violation seen.
Publication date:	2012-05-07
Subject (UDC):	53 - Física
Subject(s):	Gran col·lisionador d'hadrons (França i Suïssa) Protons Partícules (Física nuclear) Col·lisions (Física nuclear)
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/ © CERN
Pages:	8 p.
Document type:	Article Article - Published version
DOI:	https://doi.org/10.1103/PhysRevD.85.091105
Published by:	American Physical Society
Publish at:	Physical Review D, 2012, Vol. 85 , No.9 (Maig)
Share:

Files	Size	Format
Measurements of ... ons and CP asymmetries.pdf	876.0 KB	PDF