Compact Muon Solenoid
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| CMS-BPH-11-010 ; CERN-PH-EP-2012-271 | ||
| Measurement of the relative prompt production rate of $\chi_{c2}$ and $\chi_{c1}$ in pp collisions at $\sqrt{s}$ = 7 TeV | ||
| CMS Collaboration | ||
| 3 October 2012 | ||
| Eur. Phys. J. C 72 (2012) 2251 | ||
| 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. | ||
| Links: e-print arXiv:1210.0875 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; HepData record ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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