TY - JOUR
T1 - First observation of Bs→J/ψf0(980) decays.
AU - The LHCb Collaboration
AU - Playfer, Stephen
AU - Aaij, R
AU - Clark, Philip
AU - Needham, Matthew
AU - Muheim, Franz
AU - Clarke, Peter
AU - Xie, Yuehong
AU - Eisenhardt, Stephan
N1 - Phys.Lett. B698 (2011) 115-122
PY - 2011/2/2
Y1 - 2011/2/2
N2 - Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay Bs→J/ψf0(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the Bs system. Using a fit to the \pi+^ \pi^- mass spectrum with interfering resonances gives Rf0/ϕ=[Γ(Bs→J/ψf0,f0→π+π−)]/[Γ(Bs→J/ψϕ,ϕ→K+K−)]=0.252+0.046+0.027−0.032−0.033, where the uncertainties are statistical and systematic, respectively.
AB - Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay Bs→J/ψf0(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the Bs system. Using a fit to the \pi+^ \pi^- mass spectrum with interfering resonances gives Rf0/ϕ=[Γ(Bs→J/ψf0,f0→π+π−)]/[Γ(Bs→J/ψϕ,ϕ→K+K−)]=0.252+0.046+0.027−0.032−0.033, where the uncertainties are statistical and systematic, respectively.
UR - http://www.scopus.com/inward/record.url?scp=79952898367&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2011.03.006
DO - 10.1016/j.physletb.2011.03.006
M3 - Article
SN - 1873-2445
JO - Physics Letters B
JF - Physics Letters B
ER -