Observation of B → ψ (2S)K S0π+π- and B s0 → ψ (2S)K S0 decays
| Autor: | KAYA, MİTHAT |
|---|---|
| Přispěvatelé: | Tumasyan A., Adam W., Andrejkovic J., Bergauer T., Chatterjee S., Damanakis K., Dragicevic M., Valle A. E. D. , Frühwirth R., Jeitler M., et al. |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Physics and Astronomy (miscellaneous)
Uzay bilimi Temel Bilimler Physics Temel Bilimler (SCI) Mühendislik Mühendislik (çeşitli) ENGINEERING Astronomi ve Astrofizik Astronomy and Astrophysics Mühendislik Bilişim ve Teknoloji (ENG) Fizik Fizik ve Astronomi (çeşitli) Fizik Bilimleri ASTRONOMİ VE ASTROFİZİK Natural Sciences (SCI) Physical Sciences Engineering and Technology Mühendislik ve Teknoloji ASTRONOMY & ASTROPHYSICS Natural Sciences Engineering Computing & Technology (ENG) SPACE SCIENCE Engineering (miscellaneous) |
| Popis: | © 2022, The Author(s).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. |
| Databáze: | OpenAIRE |
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