Study of the structure of e[sup +]e[sup [minus]][r arrow]b[bar b]g events and first limits on the anomalous chromomagnetic coupling of the [ital b] quark

Journal Article · Mon Nov 01 04:00:00 EST 1999 · Physical Review, D

OSTI ID:5908271

Steiner, R ^[1]; Yuta, H ^[2]; Benvenuti, A C ^[3]; de Groot, N ^[4]; Allen, N J; Cotton, R; Dervan, P J; Hasan, A; McKemey, A K; Watts, S J ^[5]; Coller, J A; Hedges, S J; Shank, J T; Whitaker, J S ^[6]; DOliveira, A; Johnson, R A; Meadows, B T; Nussbaum, M ^[7]; Danielson, M N; Fahey, S ; Fan, C; Goodman, E R; Krishna, N M; Nauenberg, U; Wagner, D L; Williams, B ^[8]; Rowson, P C; Shaevitz, M H ^[9]; Dima, M; Harton, J L; Smy, M B; Staengle, H; Wilson, R J ^[10]

---

1. Adelphi University, Garden City, New York 11530 (United States)
2. Aomori University, Aomori, 030 (Japan)
3. INFN Sezione di Bologna, I-40126 Bologna (Italy)
4. University of Bristol, Bristol (United Kingdom)
5. Brunel University, Uxbridge, Middlesex UB8 3PH (United Kingdom)
6. Boston University, Boston, Massachusetts 02215 (United States)
7. University of Cincinnati, Cincinnati, Ohio 45221 (United States)
8. University of Colorado, Boulder, Colorado 80309 (United States)
9. Columbia University, New York, New York 10533 (United States)
10. Colo

The structure of e[sup +]e[sup [minus]][r arrow]b[bar b]g events was studied using Z[sup 0] decays recorded in the SLC Large Detector experiment at SLAC. Three-jet final states were selected and the charge-coupled device-based vertex detector was used to identify two of the jets as [ital b] or [bar b]. Distributions of the gluon energy and polar angle were measured over the full kinematic range for the first time, and compared with perturbative QCD predictions. The energy distribution is potentially sensitive to an anomalous [ital b] chromomagnetic moment [kappa]. We measured [kappa] to be consistent with zero and set the first limits on its value: [minus]0.17[lt][kappa][lt]0.11 at 95[percent] C.L. [copyright] [ital 1999] [ital The American Physical Society]

• OSTI ID: 5908271
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Vol. 60:9; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662310* -- Weak & Electromagnetic Interactions of Leptons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATOR FACILITIES
ACCELERATORS
B QUARKS
BEAUTY PARTICLES
BOSONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GLUONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
JET MODEL
LEPTON-LEPTON INTERACTIONS
LINEAR ACCELERATORS
MATHEMATICAL MODELS
PARTICLE INTERACTIONS
PARTICLE MODELS
PERTURBATION THEORY
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
STANFORD LINEAR COLLIDER
Z NEUTRAL BOSONS