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Studies of Bs2?(5840)0 and B s 1(5830) 0 mesons including the observation of the Bs2?(5840)0?B0KS0 decay in proton-proton collisions at ?s=8TeV

Abstract: Measurements of Bs2?(5840)0 and B s 1(5830) 0 mesons are performed using a data sample of proton-proton collisions corresponding to an integrated luminosity of [InlineEquation not available: see fulltext.], collected with the CMS detector at the LHC at a centre-of-mass energy of 8TeV. The analysis studies P-wave Bs0 meson decays into B (?) +K - and B(?)0KS0, where the B + and B 0 mesons are identified using the decays B +? J / ?K + and B 0? J / ?K ?(892) 0. The masses of the P-wave Bs0 meson states are measured and the natural width of the Bs2?(5840)0 state is determined. The first measurement of the mass difference between the charged and neutral B ? mesons is also presented. The Bs2?(5840)0 decay to B0KS0 is observed, together with a measurement of its branching fraction relative to the Bs2?(5840)0?B+K- decay.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: European Physical Journal C, Vol. 78, Iss. 11, Art. Num. 939 (2018)

Editorial: Springer New York LLC

 Fecha de publicación: 15/11/2018

Nº de páginas: 26

Tipo de publicación: Artículo de Revista

 DOI: 10.1140/epjc/s10052-018-6390-z

ISSN: 1434-6044,1434-6052

Url de la publicación: https://doi.org/10.1140/epjc/s10052-018-6390-z