Measurement of the relative prompt production rate of chi(c2) and chi(c1) in pp collisions at sqrt(s) = 7 TeV

Abstract

A measurement is presented of the relative prompt production rate of chi(c2) and chi(c1) with 4.6 inverse femtobarns of data collected by the CMS experiment at the LHC in pp collisions at sqrt(s) = 7 TeV. The two states are measured via their radiative decays chi(c) to J/psi + gamma, with the photon converting into a dielectron pair for J/psi rapidity abs(y(J/psi)) < 1.0 and photon transverse momentum pt(gamma) > 0.5 GeV. The measurement is given for six intervals of pt(J/psi) between 7 and 25 GeV. The results are compared to theoretical predictions.

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• PYTHIA 6.4 Physics and Manual
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Cited by in corpus (7)

• Production of ${\chi }_c$- and ${\chi }_b$-mesons in high energy hadronic collisions
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• ${\chi }_{c1}$ and ${\chi }_{c2}$ resonance parameters with the decays ${\chi }_{c1,c2}\to J/\psi {\mu }^{+}{\mu }^{-}$
• h_c Production at Hadron Colliders
• Review of bottomonium measurements from CMS
• Study of charmonium production using decays to hadronic final states with the LHCb experiment
• Systematic study of Charmonium production in pp collisions at the LHC energies