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
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Sirunyan2018_Article_StudiesOfMathrmBMathrmS258400B.pdf
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Author(s)
CMS Collaboration
Abercrombie, Daniel Robert
Allen, Brandon Leigh
Azzolini, Virginia
Baty, Austin Alan
Bauer, Gerry P
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
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
Date Issued
November 2018
Journal
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
Abstract
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.
MIT Department
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 Science
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
10.1140/epjc/s10052-018-6390-z
