FERMILAB Conf-96/227 UPDATED ELECTROWEAK MEASUREMENTS FROM NEUTRINO-NUCLEON DEEPLY INELASTIC SCATTERING AT CCFR

We report the results of a study of electroweak parameters from observations of neutralcurrent νN deeply inelastic scattering in the CCFR detector at the FNAL Tevatron Quadrupole Triplet neutrino beam. An improved extraction of the weak mixing angle in the on-shell renormalization scheme, incorporating additional data and with an improved technique for constraining systematic errors, is presented. Within the Standard Model, this result constrains the W mass with a precision comparable to that from direct measurements. The result is also presented in a model-independent form, as constraints on neutral-current quark-neutrino couplings, to facilitate comparisons with theories outside the Standard Model. Using this result, limits on new four-fermion interactions, leptoquarks and neutrino oscillations are presented. Prospects for a successor experiment, NuTeV (FNAL-E815), are also presented.