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Publications (2)0 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: ersity, Evanston, IL, USA 6 University of Oregon, Eugene, OR, USA 7 University of Rochester, Rochester, NY, USA Neutrino-nucleon deep inelastic scattering is a very eective way to probe the structure of the nucleon and to study the dynamics of heavy quark production. The presented analysis focuses on charm quark production in deep inelastic scattering of neutrinos and anti-neutrinos o a nucleon target. The data sample is based on opposite sign dimuon events obtained by the NuTeV experiment at FermiLab during the 1996-1997 xed-target run. 1 Introduction The NuTeV experiment collected a large sample of sign-selected neutrino and anti-neutrino deep inelastic scattering charged-current events. Charm production, approximately 10% of the total charged-current neutrino cross section, manifests itself in the NuTeV detector as a unique opposite sign nal state. We present here our preliminary measurement of charm production,
    07/2000;
  • [Show abstract] [Hide abstract]
    ABSTRACT: . Measurements of neutrino-nucleon and antineutrino-nucleon differential cross sections using the CCFR neutrino detector at Fermilab have been used to extract preliminary values of R = oe L =oe T in the kinematic region 0:01 ! x ! 0:6, and 4 ! Q 2 ! 300 GeV 2 . The new data provide the first measurements of R in the x ! 0:1 region. The x and Q 2 dependence of R is compared with a QCD based fit to previous data. The QCD fit, which provides an estimate of R in small x region where R has not been previously measured, is in good agreement with the new CCFR data. (To be published in Jou. Phys. G) 1. Introduction The ratio R = oe L =oe T of the longitudinal and transverse absorption cross sections in deep inelastic lepton-nucleon scattering provides information about the transverse momentum 2 and spin of the nucleon constituents. Within the theory of quantum chromodynamics (QCD), the nucleon constituents are spin 1/2 quarks and spin 1 gluons. In leading order QCD, R = 0, since the q...
    07/1999;