2026-10-19T01:56:53Zhttps://ebyu-rdlopen.rawdatalibrary.net/oai/requestoai:ebyu-rdlopen.rawdatalibrary.net:ebyu/144162026-10-18T20:29:12Zopenairedrivercom_ebyu_10000col_ebyu_10001Search for the X (5568) State Decaying into Bs0 π± in Proton-Proton Collisions at s =8 TeVSirunyan, A.M.Tumasyan, A.Adam, W.Ambrogi, F.Asilar, E.Bergauer, T.Brandstetter, J.Brondolin, E.Dragicevic, M.Erö, J.Escalante Del Valle, A.Flechl, M.Friedl, M.Frühwirth, R.Ghete, V.M.Grossmann, J.Hrubec, J.Jeitler, M.König, A.Krammer, N.Krätschmer, I.Liko, D.Madlener, T.Mikulec, I.Pree, E.Rad, N.Rohringer, H.Schieck, J.Schöfbeck, R.Spanring, M.Spitzbart, D.Waltenberger, W.Wittmann, J.Wulz, C.-E.Zarucki, M.Chekhovsky, V.Mossolov, V.Suarez Gonzalez, J.De Wolf, E.A.Di Croce, D.Janssen, X.Lauwers, J.Van Haevermaet, H.Van Mechelen, P.Van Remortel, N.Abu Zeid, S.Blekman, F.D'Hondt, J.De Bruyn, I.De Clercq, J.Mass spectrometryBranching fractionsDecay chainsExotic stateIntegrated luminosityInvariant mass distributionInvariant-mass spectraProduction ratesProton proton collisionsarticleluminancemesonHigh energy physicsA 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 CERN.American Physical Society2018Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/14416https://doi.org/10.1103/physrevlett.120.2020050031-9007enPhysical Review Lettersinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/14416