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First observation of Bs → J/ψf0(980) decays
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LHCb Collaboration (Including: Dossett, D., Gershon, T. J., Harrison, P. F., Latham, Thomas, Poluektov, Anton, Whitehead, M. (Mark) and Williams, M. P.). (2011) First observation of Bs → J/ψf0(980) decays. Physics Letters B, Volume 698 (Number 2). pp. 115-122. doi:10.1016/j.physletb.2011.03.006 ISSN 0370-2693.
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Official URL: http://dx.doi.org/10.1016/j.physletb.2011.03.006
Abstract
Using data collected with the LHCb detector in proton–proton collisions at a centre-of-mass energy of 7 TeV, the hadronic decay is observed. This CP eigenstate mode could be used to measure mixing-induced CP violation in the system. Using a fit to the π+π− mass spectrum with interfering resonances gives . In the interval ±90 MeV around 980 MeV, corresponding to approximately two full f0 widths we also find , where in both cases the uncertainties are statistical and systematic, respectively.
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