Measurement of the ratio B(B<inf>s</inf>0 → J/ψf<inf>0</inf>(980))/B(B<inf>s</inf>0 → J/ψφ(1020)) in pp collisions at √s=7 TeV
Type :
Article
Publication Status :
published
Access :
restrictedAccess
Abstract
A measurement of the ratio of the branching fractions of the Bs0 meson to J/ψf0(980) and to J/ψφ(1020) is presented. The J/ψ, f0(980), and φ(1020) are observed through their decays to μ+μ-, π+π-, and K+K-, respectively. The f0 and the φ are identified by requiring |Mπ+π--974 MeV|<50 MeV and |MK+K--1020 MeV|<10 MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7 TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3 fb-1. The measured ratio is B(Bs 0→J/ψf0)B(f0→π+π-)/B(Bs 0→J/ψφ)B(φ→K+K-) = 0.140±0.008(stat) ± 0.023(syst), where the first uncertainty is statistical and the second is systematic.
Source :
Physics Letters B
Date :
2016-05-10
Volume :
756
Publisher :
Elsevier
URI
http://hdl.handle.net/10679/4073http://www.sciencedirect.com/science/article/pii/S037026931600143X
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