A PRECISION-MEASUREMENT OF ELECTROWEAK PARAMETERS IN NEUTRINO-NUCLEONSCATTERING

Authors
MCFARLAND KS ARROYO CG KING BJ DEBARBARO L DEBARBARO P BAZARKO AO BERNSTEIN RH BODEK A BOLTON T BUDD H BUGEL L CONRAD J DRUCKER RB HARRIS DA JOHNSON RA KIM JH KINNEL T LAMM MJ LEFMANN WC MARSH W MCNULTY C MISHRA SR NAPLES D QUINTAS PZ ROMOSAN A SAKUMOTO WK SCHELLMAN H SCIULLI FJ SELIGMAN WG SHAEVITZ MH SMITH WH SPENTZOURIS P STERN EG VAKILI M YANG UK YU J ZELLER GP
Citation
Ks. Mcfarland et al., A PRECISION-MEASUREMENT OF ELECTROWEAK PARAMETERS IN NEUTRINO-NUCLEONSCATTERING, EUROPEAN PHYSICAL JOURNAL C-PARTICLES AND FIELDS, 1(3-4), 1998, pp. 509-513
Citations number
30
Categorie Soggetti
Physics, Particles & Fields
Journal title
EUROPEAN PHYSICAL JOURNAL C-PARTICLES AND FIELDS → ACNP
ISSN journal
14346044
Volume
1
Issue
3-4
Year of publication
1998
Pages
509 - 513
Database
ISI
SICI code
1434-6044(1998)1:3-4<509:APOEPI>2.0.ZU;2-P
Abstract
The CCFR collaboration reports a precise measurement of electroweak pa rameters derived from the ratio of neutral-current to charged-current cross-sections in neutrino-nucleon scattering at the Fermilab Tevatron . We determine sin(2) theta(W)((on-shell)) = 0.2236 +/- 0.0028(expt.) +/- 0.0030(model) for M-top = 175 GeV, M-Higgs = 150 GeV. This is equi valent to M-W = 80.35+/-0.21 GeV. The good agreement of this measureme nt with Standard Model expectations implies the exclusion of additiona l vvqq contact interactions at 95% confidence at a mass scale of 1-8 T eV, depending on the form of the contact interaction.