Measurement of the relative prompt production rate of χ c2 and χ c1 in pp collisions at [Formula: see text].

Journal article

A measurement is presented of the relative prompt production rate of χ c2 and χ c1 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 χ c→J/ψ+γ, with the photon converting into an e(+)e(-) pair for J/ψ rapidity |y(J/ψ)|<1.0 and photon transverse momentum p T(γ)>0.5 GeV/c. The measurement is given for six intervals of p T(J/ψ) between 7 and 25 GeV/c. The results are compared to theoretical predictions.

Authors: Chatrchyan, S; Khachatryan, V; Sirunyan, A; Tumasyan, A; Adam, W

• Publication status: Published
• Journal: European Physical Journal. C, Particles and Fields
• Volume: 72
• Issue: 12
• Pages: 2251
• Publication date: 2012-01-01
• DOI: 10.1140/epjc/s10052-012-2251-3
• EISSN: 1434-6052
• ISSN: 1434-6044
• Language: English