Abstract
We present the first next-to-leading-order QCD analysis of neutrino charm production, using a sample of 6090ν μ − and\(\bar \nu _\mu \)-induced opposite-sign dimuon events observed in the CCFR detector at the Fermilab Tevatron. We find that the nucleon strange quark content is suppressed with respect to the non-strange sea quarks by a factor κ=0.477 +0.063−0.053 , where the error includes statistical, systematic and QCD scale uncertainties. In contrast to previous leading order analyses, we find that the strange seax-dependence is similar to that of the non-strange sea, and that the measured charm quark mass,m c =1.70±0.19 GeV/c2, is larger and consistent with that determined in other processes. Further analysis finds that the difference inx-distributions betweenxs(x) and\(x\bar s{\text{(}}x{\text{)}}\) is small. A measurement of the Cabibbo-Kobayashi-Maskawa matrix element |V cd |=0.232 +0.018−0.020 is also presented.
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CCFR Collaboration., Bazarko, A.O., Arroyo, C.G. et al. Determination of the strange quark content of the nucleon from a next-to-leading-order QCD analysis of neutrino charm production. Z. Phys. C - Particles and Fields 65, 189–198 (1995). https://doi.org/10.1007/BF01571875
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DOI: https://doi.org/10.1007/BF01571875