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Measurement of sigma(chic2)/ sigma(chic1) at sqrt(s) = 7 TeV
A measurement of the relative prompt production rate of $\chi_{c2}$ and $\chi_{c1}$ with 4.62 fb$^{-1}$ of data collected at LHC at $\sqrt{s}= 7 {TeV}$ is presented. The two states are measured via their radiative decays $ \chi_c \rightarrow J/\psi + \gamma$, with the photon converting into an $e^+e...
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2012
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| Acceso en línea: | http://cds.cern.ch/record/1455100 |