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±.

Search for the X (5568) State Decaying into Bs0 π± in Proton-Proton Collisions at s =8 TeV / Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Ero, J., Escalante Del Valle, A., Flechl, M., Friedl, M., Fruhwirth, R., Ghete, V.M., Grossmann, J., Hrubec, J., Jeitler, M., Konig, A., Krammer, N., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 120:20(2018), p. 202005. [10.1103/PhysRevLett.120.202005]

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

Cipriani M.;Del Re D.;Longo E.;Organtini G.;Paramatti R.;Rahatlou S.;Santanastasio 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±.
2018
hadron-hadron scattering (experiments); b mesons; hadron spectroscopy; cms; lhc
01 Pubblicazione su rivista::01a Articolo in rivista
Search for the X (5568) State Decaying into Bs0 π± in Proton-Proton Collisions at s =8 TeV / Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Ero, J., Escalante Del Valle, A., Flechl, M., Friedl, M., Fruhwirth, R., Ghete, V.M., Grossmann, J., Hrubec, J., Jeitler, M., Konig, A., Krammer, N., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 120:20(2018), p. 202005. [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/11573/1354236
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