Observation of B0→ψ(2S)KS0π+π- and Bs0→ψ(2S)KS0 decays.
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| Title: | Observation of B0→ψ(2S)KS0π+π- and Bs0→ψ(2S)KS0 decays. |
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| Authors: | Tumasyan, A.1 (AUTHOR), Adam, W.2 (AUTHOR), Andrejkovic, J. W.2 (AUTHOR), Bergauer, T.2 (AUTHOR), Chatterjee, S.2 (AUTHOR), Damanakis, K.2 (AUTHOR), Dragicevic, M.2 (AUTHOR), Valle, A. Escalante Del2 (AUTHOR), Frühwirth, R.2,3 (AUTHOR), Jeitler, M.2,3 (AUTHOR), Krammer, N.2 (AUTHOR), Lechner, L.2 (AUTHOR), Liko, D.2 (AUTHOR), Mikulec, I.2 (AUTHOR), Paulitsch, P.2 (AUTHOR), Pitters, F. M.2 (AUTHOR), Schieck, J.2,3 (AUTHOR), Schöfbeck, R.2 (AUTHOR), Schwarz, D.2 (AUTHOR), Templ, S.2 (AUTHOR) |
| Source: | European Physical Journal C -- Particles & Fields. May2022, Vol. 82 Issue 5, p1-25. 25p. |
| Subjects: | Branching ratios, Proton-proton interactions, Standard deviations, Mesons, Luminosity |
| Abstract: | Using a data sample of s = 13 TeV proton-proton collisions collected by the CMS experiment at the LHC in 2017 and 2018 with an integrated luminosity of 103 fb - 1 , the B s 0 → ψ (2S) K S 0 and B 0 → ψ (2S) K S 0 π + π - decays are observed with significances exceeding 5 standard deviations. The resulting branching fraction ratios, measured for the first time, correspond to B (B s 0 → ψ (2S) K S 0) / B (B 0 → ψ (2S) K S 0) = (3.33 ± 0.69 (stat) ± 0.11 (syst) ± 0.34 (f s / f d)) × 10 - 2 and B (B 0 → ψ (2S) K S 0 π + π -) / B (B 0 → ψ (2S) K S 0) = 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 B s 0 and B 0 mesons, f s / f d . [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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