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Studies of B-s2*(5840)(0) and B-s1(5830)(0) mesons including the observation of the B-s2*(5840)(0) -> (BKS0)-K-0 decay in proton- proton collisions at root s=8 TeV

Choudhury, S and Komaragiri, JR and Tiwari, PC and Collaboration, CMS and Woods, N. and Smith, W. H. (2018) Studies of B-s2*(5840)(0) and B-s1(5830)(0) mesons including the observation of the B-s2*(5840)(0) -> (BKS0)-K-0 decay in proton- proton collisions at root s=8 TeV. In: EUROPEAN PHYSICAL JOURNAL C, 78 (11).

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Official URL: http://dx.doi.org/10.1140/epjc/s10052-018-6390-z

Abstract

Measurements of B-s2*(5840)(0) and B-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 8 TeV. The analysis studies P-wave B-s(0) meson decays into B(*)(+)K(-)and B(*)K-0(S)0, where the B+ and B-0 mesons are identified using the decays B+ -> J/psi K+ and B-0 -> J/psi K* (892)(0). The masses of the P-wave B-s(0) 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 (BKS0)-K-0 is observed, together with a measurement of its branching fraction relative to the B-s2*(5840)(0) -> B+K- decay.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to SPRINGER
Keywords: CMS; Physics; b hadrons; Heavy flavour spectroscopy; Hadron spectroscopy; Experimental results
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Depositing User: Francis Jayakanth
Date Deposited: 23 Jan 2019 09:13
Last Modified: 23 Jan 2019 09:13
URI: http://eprints.iisc.ac.in/id/eprint/61571

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