Measurements of the longitudinal structure function and |Vcs| in the CCFR experiment
NuTeV Collaboration, U. K. Yang, C. McNulty, C. G. Arroyo, L. deBarbaro, P. deBarbaro, A. O. Bazarko, R. H. Bernstein, A. Bodek, T. Bolton, H. Budd, J. Conrad, D. A. Harris, R. A. Johnson, J. H. Kim, B. J. King, T. Kinnel, M. J. Lamm, W. C. Lefmann, W. Marsh, K. S. McFarland, S. R. Mishra, D. Naples, P. Z. Quintas, A. Romosan, W. K. Sakumoto, H. Schellman, F. J. Sciulli, W. G. Seligman, M. H. Shaevitz, W. H. Smith, P. Spentzouris, E. G. Stern, M. Vakili, J. Yu
Abstract
Measurements of charged current neutrino and anti-neutrino nucleon interactions in the CCFR detector are used to extract the structure functions, F2, xF3(nu), xF3(nubar) and R(longitudinal) in the kinematic region 0.01<x<0.6 and 1<Q2<300 GeV2. The new measurements of R in the x<0.1 region provide a constraint on the level of the gluon distribution. The x and Q2 dependence of R is compared with a QCD based fit to previous data. The CKM matrix element |Vcs| is extracted from a combined analysis of xF3 and dimuon data.
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