$Observation of Bs0→ψ(2S) and measurement of the ratio of branching fractions B(Bs0→ψ(2S) /B(Bs0→J/ψ)$

Observation of Bs0→ψ(2S) and measurement of the ratio of branching fractions B(Bs0→ψ(2S) /B(Bs0→J/ψ)

We report the first observation of Bs0→ψ(2S) decay in pp̄ collisions at s= 1.96 TeV using 360 pb-1 of data collected by the CDF II detector at the Fermilab Tevatron. We observe 20.2±5.0 and 12.3±4.1 Bs0→ψ(2S) candidates, in ψ(2S)→μ+μ- and ψ(2S)→J/ψπ+π- decay modes, respectively. We present a measure...

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Bibliographic Details
Main Authors:	Abulencia, A, Acosta, D, Adelman, J, Affolder, T, Akimoto, T, Albrow, MG, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, Annovi, A, Antos, J, Aoki, M, Apollinari, G, Arguin, J, Arisawa, T, Artikov, A, Ashmanskas, W, Attal, A, Azfar, F, Azzi-Bacchetta, P, Azzurri, P, Bacchetta, N, Bachacou, H
Format:	Journal article
Language:	English
Published:	2006

Observation of Bs0→ψ(2S) and measurement of the ratio of branching fractions B(Bs0→ψ(2S) /B(Bs0→J/ψ)

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