First observation of Bs -> J/psi f0(980) decays

First observation of Bs -> J/psi f0(980) decays

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/psi f0(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the B_s system. Using a fit to the pi+ pi- mass spec...

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Main Authors: Collaboration, TL, Aaij, R, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Cartelle, P, Jr, A, Amato, S, Amhis, Y, Amoraal, J, Anderson, J, Appleby, R, Gutierrez, O, Arrabito, L, Artuso, M, Aslanides, E, Auriemma, G, Bachmann, S, Bailey, D, Balagura, V
פורמט: Journal article
יצא לאור: 2011
תיאור
סיכום: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/psi f0(980) is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the B_s system. Using a fit to the pi+ pi- mass spectrum with interfering resonances gives R_{f0/phi} = [Gamma(Bs -> J/psi f0, f0 -> pi+ pi-)]/[Gamma(Bs -> J/psi phi, phi -> K+K-)] = 0.252^{+0.046+0.027}_{-0.032-0.033}, where the uncertainties are statistical and systematic, respectively.

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