Precise measurement of the left-right cross section asymmetry in [ital Z] boson production by [ital e][sup +][ital e][sup [minus]] collisions

Journal Article · Mon Jul 04 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.25· OSTI ID:7080435

Abe, K; Abt, I; Ash, W W; Aston, D; Bacchetta, N; Baird, K G; Baltay, C; Band, H R; Barakat, M B; Baranko, G; Bardon, O; Barklow, T; Bazarko, A O; Ben-David, R; Benvenuti, A C; Bienz, T; Bilei, G M; Bisello, D; Blaylock, G; Bogart, J R ; Bolton, T; Bower, G R; Brau, J E; Breidenbach, M; Bugg, W M; Burke, D; Burnett, T H; Burrows, P N; Busza, W; Calcaterra, A; Caldwell, D O; Calloway, D; Camanzi, B; Carpinelli, M; Cassell, R; Castaldi, R; Castro, A; Cavalli-Sforza, M; Church, E; Cohn, H O; Coller, J A; Cook, V; Cotton, R; Cowan, R F; Coyne, D G; D'Oliveira, A; Damerell, C J.S.; Dasu, S; Decker, F J; De Sangro, R; De Simone, P; De Simone, S; Dell'Orso, R; Du, Y C; Dubois, R; Duboscq, J E; Eisenstein, B I; Elia, R; Emma, P; Fan, C; Fero, M J; Frey, R; Furuno, K; Garwin, E L; Gillman, T; Gladding, G; Gonzalez, S; Hallewell, G D; Hart, E L; Hasegawa, Y; Hedges, S; Hertzbach, S S; Hildreth, M D; Hitlin, D G; Huber, J; H,

We present a precise measurement of the left-right cross section asymmetry ([ital A][sub [ital L][ital R]]) for [ital Z] boson production by [ital e][sup +][ital e][sup [minus]] collisions. The measurement was performed at a center-of-mass energy of 91.26 GeV with the SLD detector at the SLAC Linear Collider (SLC). The luminosity-weighted average polarization of the SLC electron beam was (63.0[plus minus]1.1)%. Using a sample of 49 392 [ital Z] decays, we measure [ital A][sub [ital L][ital R]] to be 0.1628[plus minus]0.0071(stat)[plus minus]0.0028(syst) which determines the effective weak mixing angle to be sin[sup 2][theta][sub [ital W]][sup eff]=0.2292[plus minus]0.0009(stat) [plus minus]0.0004(syst).

• OSTI ID: 7080435
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:1; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

662310* -- Weak & Electromagnetic Interactions of Leptons-- (1992-)
662440 -- Properties of Other Particles Including Hypothetical Particles-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATOR FACILITIES
ACCELERATORS
ASYMMETRY
BEAMS
BOSONS
CENTER-OF-MASS SYSTEM
CROSS SECTIONS
ELECTRON BEAMS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEPTON BEAMS
LEPTON-LEPTON INTERACTIONS
LINEAR ACCELERATORS
PARTICLE BEAMS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POLARIZED BEAMS
STANFORD LINEAR COLLIDER
Z NEUTRAL BOSONS