Charge asymmetry in [ital W]-boson decays produced in [ital p[bar p]] collisions at [radical][ital s]= 1. 8 TeV

Journal Article · Mon Feb 06 00:00:00 EST 1995 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.74.850· OSTI ID:6577925

Abe, F; Albrow, M G; Amidei, D; Antos, J; Anway-Wiese, C; Apollinari, G; Areti, H; Atac, M; Auchincloss, P; Azfar, F; Azzi, P; Bacchetta, N; Badgett, W; Bailey, M W; Bao, J; de Barbaro, P; Barbaro-Galtieri, A; Barnes, V E; Barnett, B A; Bartalini, P ; Bauer, G; Baumann, T; Bedeschi, F; Behrends, S; Belforte, S; Bellettini, G; Bellinger, J; Benjamin, D; Benlloch, J; Bensinger, J; Benton, D; Beretvas, A; Berge, J P; Bertolucci, S; Bhatti, A; Biery, K; Binkley, M; Bird, F; Bisello, D; Blair, R E; Blocker, C; Bodek, A; Bokhari, W; Bolognesi, V; Bortoletto, D; Boswell, C; Boulos, T; Brandenburg, G; Buckley-Geer, E; Budd, H S; Burkett, K; Busetto, G; Byon-Wagner, A; Byrum, K L; Cammerata, J; Campagnari, C; Campbell, M; Caner, A; Carithers, W; Carlsmith, D; Castro, A; Cen, Y; Cervelli, F; Chapman, J; Cheng, M; Chiarelli, G; Chikamatsu, T; Cihangir, S; Clark, A G; Cobal, M; Contreras, M; Conway, J; Cooper, J; Cordelli, M

Charge asymmetry has been measured using 19 039 [ital W] decays recorded by the Collider Detector at Fermilab during the 1992--93 run of the Tevatron Collider. The asymmetry is sensitive to the ratio of [ital d] and [ital u] quark distributions to [ital x][lt]0.01 at [ital Q][sup 2][approx][ital M][sup 2][sub [ital W]], where nonperturbative effects are minimal. It is found that of the two current sets of parton distributions, those of Martin, Roberts, and Stirling are favored over the sets most recently produced by the CTEQ Collaboration. The [ital W] asymmetry data provide stronger constraints on [ital d]/[ital u] ratio than the recent measurements of [ital F][sub 2][sup [mu][ital n]]/[ital F][sub 2][sup [mu][ital p]], which are limited by uncertainties originating from deuteron corrections.

• OSTI ID: 6577925
• Journal Information: Physical Review Letters; (United States), Vol. 74:6; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGES
ASYMMETRY
PROTON-ANTIPROTON INTERACTIONS
PARTICLE PRODUCTION
W MINUS BOSONS
W PLUS BOSONS
PARTICLE DECAY
DISTRIBUTION
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
PARTONS
ACCELERATORS
BARYON-BARYON INTERACTIONS
BOSONS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
HADRON-HADRON INTERACTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
POSTULATED PARTICLES
SYNCHROTRONS
662380* - Decays of Intermediate Bosons- (1992-)
662340 - Hadron Interactions- (1992-)