Studies of B∗s2(5840)⁰ and Bs1(5830)⁰ mesons including the observation of the B∗s2(5840)⁰ → B⁰K⁰ S decay in proton-proton collisions at √s = 8 TeV
Author(s)
CMS Collaboration; Abercrombie, Daniel Robert; Allen, Brandon Leigh; Azzolini, Virginia; Baty, Austin Alan; Bauer, Gerry P; Bi, Ren; Brandt, S.; Busza, Wit; Cali, Ivan Amos; D'Alfonso, Mariarosaria; Demiragli, Zeynep; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Harris, P.; Hsu, D.; Hu, M.; Iiyama, Yutaro; Innocenti, G. M.; Klute, Markus; Kovalskyi, Dmytro; Lee, Y. -J.; Luckey Jr, P David; Maier, Benedikt; Marini, Andrea Carlo; McGinn, Christopher Francis; Mironov, Camelia Maria; Narayanan, S.; Niu, X.; Paus, Christoph M. E.; Roland, Christof E; Roland, Gunther M; Stephans, George S. F.; Sumorok, Konstanty C; Tatar, K.; Velicanu, Dragos Alexandru; Wang, Jun; Wang, T.W.; Wyslouch, Boleslaw; Shi, Zhaozhong; ... Show more Show less
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Alternative title
Studies of B[superscript * over subscript s2](5840)⁰ and B[subscript s1](5830)⁰ mesons including the observation of the B[superscript * over subscript s2](5840)⁰ → B⁰K⁰ S decay in proton-proton collisions at √s = 8 TeV
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Measurements of B[superscript * over subscript s2](5840)⁰ and B[subscript s1](5830)⁰ mesons are performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of 19.6 fb-¹, 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/ψK+ and B0→J/ψK∗(892)⁰. The masses of the P-wave B0s meson states are measured and the natural width of the B[superscript * over subscript 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[superscript * over subscript s2](5840)⁰ decay to B⁰K⁰S is observed, together with a measurement of its branching fraction relative to the B[superscript * over subscript s2](5840)⁰→B+K− decay.
Date issued
2018-11Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
European Physical Journal C
Publisher
Springer
Citation
CMS Collaboration (Sirunyan, A. M., et al.), "Studies of B∗s2(5840)⁰ and Bs1(5830)⁰ mesons including the observation of the B∗s2(5840)⁰ → B⁰K⁰ S decay in proton-proton collisions at √s = 8 TeV." European Physical Journal C 78, 78 (2018): no. 939 doi 10.1140/epjc/s10052-018-6390-z ©2018 Author(s)
Version: Final published version
ISSN
1434-6044
1434-6052
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