A search for resonance like structures in the B0s π± 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 B0s mesons are reconstructed in the decay chain B0s → J/ψ ϕ, with J/ψ → μ+μ− and ϕ → K+K−. The B0s π± invariant mass distribution shows no statistically significant peaks for different selection requirements on the reconstructed B0s and π± candidates. Upper limits are set on the relative production rates of the X(5568) and B0s states times the branching fraction of the decay X(5568)± → B0s π±. In addition, upper limits are obtained as a function of the mass and the natural width of possible exotic states decaying into B0s π±.

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

Ravera, F.;Meridiani, P.;Amapane, N.;Argiro, S.;Bellan, R.;Costa, M.;Covarelli, R.;Kiani, B.;Migliore, E.;Monaco, V.;Monteil, E.;Obertino, M. M.;Pacher, L.;Pinna Angioni, G. L.;Romero, A.;Sacchi, R.;Sola, V.;Solano, A.;
2018-01-01

Abstract

A search for resonance like structures in the B0s π± 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 B0s mesons are reconstructed in the decay chain B0s → J/ψ ϕ, with J/ψ → μ+μ− and ϕ → K+K−. The B0s π± invariant mass distribution shows no statistically significant peaks for different selection requirements on the reconstructed B0s and π± candidates. Upper limits are set on the relative production rates of the X(5568) and B0s states times the branching fraction of the decay X(5568)± → B0s π±. In addition, upper limits are obtained as a function of the mass and the natural width of possible exotic states decaying into B0s π±.
2018
120
20
202005
202021
http://harvest.aps.org/v2/bagit/articles/10.1103/PhysRevLett.120.202005/apsxml
Physics and Astronomy (all)
Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Escalante Del...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1693519
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