Measurement of the relative prompt production rate of χc2 and χc1 in pp collisions at √s = 7 TeV
European Physical Journal C, cilt.72, sa.12, ss.1-22, 2012 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Kısa Makale
- Cilt numarası: 72 Sayı: 12
- Basım Tarihi: 2012
- Doi Numarası: 10.1140/epjc/s10052-012-2251-3
- Dergi Adı: European Physical Journal C
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1-22
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
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 √s = 7 TeV. 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 {pipe}y(J/ψ){pipe}<1.0 and photon transverse momentum pT(γ)>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. © 2012 CERN for the benefit of the CMS collaboration.