Observation of B0→ψ(2S)K0S π+π− and B0s→ψ(2S)K0S Decays

European Physical Journal C 2022
Kārlis Dreimanis, Viesturs Veckalns

Using a data sample of s=13TeV proton-proton collisions collected by the CMS experiment at the LHC in 2017 and 2018 with an integrated luminosity of 103fb-1, the Bs0→ψ(2S)KS0 and B0→ψ(2S)KS0π+π- decays are observed with significances exceeding 5 standard deviations. The resulting branching fraction ratios, measured for the first time, correspond to B(Bs0→ψ(2S)KS0)/B(B0→ψ(2S)KS0)=(3.33±0.69(stat)±0.11(syst)±0.34(fs/fd))×10-2 and B(B0→ψ(2S)KS0π+π-)/B(B0→ψ(2S)KS0)=0.480±0.013(stat)±0.032(syst), where the last uncertainty in the first ratio is related to the uncertainty in the ratio of production cross sections of Bs0 and B mesons, fs/ fd.

DOI
10.1140/epjc/s10052-022-10315-y
Hyperlink
https://link.springer.com/article/10.1140/epjc/s10052-022-10315-y

The CMS Collaboration, A.Tumasyan, K.Dreimanis, V.Veckalns ... [et al.]. Observation of B0→ψ(2S)K0S π+π− and B0s→ψ(2S)K0S Decays. European Physical Journal C, 2022, Vol. 82, No. 5, Article number 499. ISSN 1434-6044. e-ISSN 1434-6052. Available from: doi:10.1140/epjc/s10052-022-10315-y

Publication language
English (en)