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Observation of B0 → ψ(2S)K0Sπ+π− and B0S → ψ(2S)K0S decays

Tumasyan, A ; Sharif University of Technology | 2022

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  1. Type of Document: Article
  2. DOI: 10.1140/epjc/s10052-022-10315-y
  3. Publisher: Springer Science and Business Media Deutschland GmbH , 2022
  4. Abstract:
  5. 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. © 2022, The Author(s)
  6. Keywords:
  7. Source: European Physical Journal C ; Volume 82, Issue 5 , 2022 ; 14346044 (ISSN)
  8. URL: https://arxiv.org/abs/2201.09131