Measurement of sigma(chi c2)B(chi(c2)-> J/psi gamma)/sigma(chi c1)B(chi(c1)-> J/psi gamma) in p(p)over-bar collisions at root s=1.96 TeV RID G-1087-2011 RID E-4473-2011
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- MORELLO, MICHAEL JOSEPH
Publication date
January 2007
DOIAbstract
We measure the ratio of cross section times branching fraction, R(p)=sigma(chi c2)B(chi(c2)-> J/psi gamma)/sigma(chi c1)B(chi(c1)-> J/psi gamma), in 1.1 fb(-1) of p (p) over bar collisions at root s=1.96 TeV. This measurement covers the kinematic range p(T)(J/psi)> 4.0 GeV/c, |eta(J/psi) 1.0 GeV/c. For events due to prompt processes, we find R(p)=0.395 +/- 0.016(stat)+/- 0.015(syst). This result represents a significant improvement in precision over previous measurements of prompt chi(c1,2) hadro production
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