Measurements of B∗s2(5840)0 and Bs1(5830)0 mesons are performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of Open image in new window, collected with the CMS detector at the LHC at a centre-of-mass energy of 8TeV . The analysis studies P-wave B0s meson decays into B(∗)+K− and B(∗)0K0S , where the B+ and B0 mesons are identified using the decays B+→J/K+ and B0→J/K∗(892)0 . The masses of the P-wave B0s meson states are measured and the natural width of the B∗s2(5840)0 state is determined. The first measurement of the mass difference between the charged and neutral B∗ mesons is also presented. The B∗s2(5840)0 decay to B0K0S is observed, together with a measurement of its branching fraction relative to the B∗s2(5840)0→B+K− decay.

Studies of Bs2∗(5840)0 and Bs1(5830)0 mesons including the observation of the Bs2∗(5840)0 to B0KS0 decay in proton-proton collisions at sqrt(s)=8TeV

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.;Romero, A.;Sacchi, R.;Sola, V.;Solano, A.;Soldi, D.;
2018-01-01

Abstract

Measurements of B∗s2(5840)0 and Bs1(5830)0 mesons are performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of Open image in new window, collected with the CMS detector at the LHC at a centre-of-mass energy of 8TeV . The analysis studies P-wave B0s meson decays into B(∗)+K− and B(∗)0K0S , where the B+ and B0 mesons are identified using the decays B+→J/K+ and B0→J/K∗(892)0 . The masses of the P-wave B0s meson states are measured and the natural width of the B∗s2(5840)0 state is determined. The first measurement of the mass difference between the charged and neutral B∗ mesons is also presented. The B∗s2(5840)0 decay to B0K0S is observed, together with a measurement of its branching fraction relative to the B∗s2(5840)0→B+K− decay.
2018
78
11
1
26
http://link.springer-ny.com/link/service/journals/10052/index.htm
b hadrons; CMS; Experimental results; Hadron spectroscopy; Heavy flavour spectroscopy; Physics; Engineering (miscellaneous); Physics and Astronomy (miscellaneous)
Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Del Valle, A. Escalante; Fle...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1693488
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