Studies of B*s2(5840)0 and Bs1(5830)0 Mesons Including the Observation of the B*s2(5840)0→B0K0S Decay in Proton-Proton Collisions at √s = 8 TeV

The European Physical Journal C (EPJ C) 2018
Viesturs Veckalns, CERN international group of authors

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 / ψK + and B 0→ J / ψK ∗(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.

Atslēgas vārdi
b hadrons, CMS, Experimental results, Hadron spectroscopy, Heavy flavour spectroscopy, Physics
DOI
10.1140/epjc/s10052-018-6390-z
Hipersaite
https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-018-6390-z

Veckalns, V., international group of authors, C. Studies of B*s2(5840)0 and Bs1(5830)0 Mesons Including the Observation of the B*s2(5840)0→B0K0S Decay in Proton-Proton Collisions at √s = 8 TeV. The European Physical Journal C (EPJ C), 2018, Vol. 78, No. 11, 1.-10.lpp. ISSN 1434-6044. e-ISSN 1434-6052. Pieejams: doi:10.1140/epjc/s10052-018-6390-z

Publikācijas valoda
English (en)