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Leading order analysis of neutrino induced dimuon events in the CHORUS experiment
CHORUS Collaboration,Kayis-Topaksu, A.,Onengut, G.,van Dantzig, R.,de Jong, M.,Oldeman, R.G.C.,Guler, M.,Kama, S.,Kose, U.,Serin-Zeyrek, M.,Tolun, P.,Catanesi, M.G.,Muciaccia, M.T.,Bulte, A.,Winter, K North Holland 2008 Nuclear Physics, Section B Vol. No.
We present a leading order QCD analysis of a sample of neutrino induced charged-current events with two muons in the final state originating in the lead-scintillating fibre calorimeter of the CHORUS detector. The results are based on a sample of 8910 neutrino and 430 antineutrino induced opposite-sign dimuon events collected during the exposure of the detector to the CERN Wide Band Neutrino Beam between 1995 and 1998. The analysis yields a value of the charm quark mass of m<SUB>c</SUB>=(1.26+/-0.16+/-0.09)GeV/c<SUP>2</SUP> and a value of the ratio of the strange to non-strange sea in the nucleon of κ=0.33+/-0.05+/-0.05, improving the results obtained in similar analyses by previous experiments.