The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at s=7 TeV has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity of 36 pb−1. The ψ(2S) mesons are reconstructed in the decay channels ψ(2S)→μ + μ − and ψ(2S)→J/ψπ + π −, with the J/ψ meson decaying into two muons. Results are presented both for promptly produced ψ(2S) mesons and for those originating from b-hadron decays. In the kinematic range p T(ψ(2S))≤16 GeV/c and 2<y(ψ(2S))≤4.5 we measure (bJX) , (J+−) and ((2S)e+e−) branching fraction uncertainties.

Measurement of ψ(2S) meson production in pp collisions at sqrt(s)=7 TeV

VELTRI, MICHELE;
2012-01-01

Abstract

The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at s=7 TeV has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity of 36 pb−1. The ψ(2S) mesons are reconstructed in the decay channels ψ(2S)→μ + μ − and ψ(2S)→J/ψπ + π −, with the J/ψ meson decaying into two muons. Results are presented both for promptly produced ψ(2S) mesons and for those originating from b-hadron decays. In the kinematic range p T(ψ(2S))≤16 GeV/c and 2
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/2527983
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