A search for resonancelike structures in the Bs0π± invariant mass spectrum is performed using proton-proton collision data collected by the CMS experiment at the LHC at s=8 TeV, corresponding to an integrated luminosity of 19.7 fb-1. The Bs0 mesons are reconstructed in the decay chain Bs0→J/ψφ, with J/ψ→μ+μ- and φ→K+K-. The Bs0π± invariant mass distribution shows no statistically significant peaks for different selection requirements on the reconstructed Bs0 and π± candidates. Upper limits are set on the relative production rates of the X(5568) and Bs0 states times the branching fraction of the decay X(5568)±→Bs0π±. In addition, upper limits are obtained as a function of the mass and the natural width of possible exotic states decaying into Bs0π±.

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Search for the X (5568) State Decaying into Bs0 π± in Proton-Proton Collisions at s =8 TeV. PHYSICAL REVIEW LETTERS, 120(20) [10.1103/PhysRevLett.120.202005].

Search for the X (5568) State Decaying into Bs0 π± in Proton-Proton Collisions at s =8 TeV

Dinardo M. E.;Ghezzi A.;Govoni P.;Paganoni M.;Ragazzi S.;Tabarelli De Fatis T.;Lucchini M. T.;Gerosa R.;Massironi A.;De Guio F.;
2018

Abstract

A search for resonancelike structures in the Bs0π± invariant mass spectrum is performed using proton-proton collision data collected by the CMS experiment at the LHC at s=8 TeV, corresponding to an integrated luminosity of 19.7 fb-1. The Bs0 mesons are reconstructed in the decay chain Bs0→J/ψφ, with J/ψ→μ+μ- and φ→K+K-. The Bs0π± invariant mass distribution shows no statistically significant peaks for different selection requirements on the reconstructed Bs0 and π± candidates. Upper limits are set on the relative production rates of the X(5568) and Bs0 states times the branching fraction of the decay X(5568)±→Bs0π±. In addition, upper limits are obtained as a function of the mass and the natural width of possible exotic states decaying into Bs0π±.
Articolo in rivista - Articolo scientifico
standard, model
English
2018
120
20
202005
none
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Search for the X (5568) State Decaying into Bs0 π± in Proton-Proton Collisions at s =8 TeV. PHYSICAL REVIEW LETTERS, 120(20) [10.1103/PhysRevLett.120.202005].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/306663
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