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Observation of the decay B+c→ψ(2S)π+

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Original languageEnglish
Pages (from-to)071103
Number of pages1
JournalPhysical Review D
VolumeD87
Early online date7 Mar 2013
DOIs
StatePublished - 26 Apr 2013

Abstract

The decay B+c→ψ(2S)π+ with ψ(2S)→μ+μ− is observed with a significance of 5.2σ using pp collision data corresponding to an integrated luminosity of 1.0\invfb collected by the LHCb experiment. The branching fraction of B+c→ψ(2S)π+ decays relative to that of the B+c→J/ψπ+ mode is measured to be
B(B+c→ψ(2S)π+)B(B+c→J/ψπ+)=0.250±0.068stat±0.014\syst±0.006(B).
The last term is the uncertainty on the ratio B(ψ(2S)→μ+μ−)/B(J/ψ→μ+μ−).

ID: 8093585