Measurement of the relative prompt production rate of chi(c2) and chi(c1) in $pp$ collisions at $\\sqrt{s}=7$ TeV
Journal
European Physical Journal
Journal Volume
C72
Pages
2251
Date Issued
2012-10
Abstract
A measurement is presented of the relative prompt production rate of χc2 and χc1 with 4.6 fb-1 of data collected by the CMS experiment at the LHC in pp collisions at [Formula: see text]. The two states are measured via their radiative decays χc→J/ψ+γ, with the photon converting into an e+e- pair for J/ψ rapidity |y(J/ψ)|0.5 GeV/c. The measurement is given for six intervals of pT(J/ψ) between 7 and 25 GeV/c. The results are compared to theoretical predictions.
Type
journal article