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Observation of B0s→ψ(2S)ϕ and Measurement of the Ratio of Branching Fractions B(B0s→ψ(2S)ϕ)/B(B0s→J/ψϕ)
Journal article   Peer reviewed

Observation of B0s→ψ(2S)ϕ and Measurement of the Ratio of Branching Fractions B(B0s→ψ(2S)ϕ)/B(B0s→J/ψϕ)

A Abulencia, D Acosta, J Adelman, T Affolder, T Akimoto, M G Albrow, D Ambrose, S Amerio, D Amidei, A Anastassov, …
Physical review letters, Vol.96(23), pp.231801-231801
06/16/2006
PMID: 16803368

Abstract

High Energy Physics Particle Physics
We report the first observation of B0s→ψ(2S)ϕ decay in p¯p 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 B0s→ψ(2S)ϕ candidates, in ψ(2S)→μ+μ− and ψ(2S)→J/ψπ+π− decay modes, respectively. We present a measurement of the relative branching fraction B(B0s→ψ(2S)ϕ)/B(B0s→J/ψϕ)=0.52±0.13(stat)±0.04(syst)±0.06(BR) using the ψ(2S)→μ+μ− decay mode.

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