First observation of Bs -&gt; J/psi f0(980) decays
Creators: name: The LHCb Collaboration
name: Aaij, R.
name: Adeva, B.
name: Adinolfi, M.
name: Adrover, C.
name: Affolder, A.
name: Ajaltouni, Z.
name: Albrecht, J.
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name: Amato, S.
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name: Amoraal, J.
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name: Gutierrez, O. Aquines
name: Arrabito, L.
name: Artuso, M.
name: Aslanides, E.
name: Auriemma, G.
name: Bachmann, S.
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name: Balagura, V.
name: Baldini, W.
name: Barlow, R. J.
name: Barschel, C.
name: Barsuk, S.
name: Bates, A.
name: Bauer, C.
name: Bauer, Th.
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name: Bediaga, I.
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name: Belyaev, I.
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name: Benayoun, M.
name: Bencivenni, G.
name: Bernet, R.
name: Bettler, M. -O.
name: van Beuzekom, M.
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Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Using data collected with the LHCb detector in proton-proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay Bs -&gt; 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 -&gt; J/psi f0, f0 -&gt; pi+ pi-)]/[Gamma(Bs -&gt; J/psi phi, phi -&gt; K+K-)] = 0.252^{+0.046+0.027}_{-0.032-0.033}, where the uncertainties are statistical and systematic, respectively.
description: 11 pages, 6 figures. To be published in Physics Letters B