A preliminary study of the structure of b{anti b}g events using Z{sup 0} decays

Conference · Sun Jun 01 00:00:00 EDT 1997

OSTI ID:537338

Abe, K ^[1]; Abe, K ^[2]; Akagi, T ^[3]

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1. Nagoya Univ. (Japan)
2. Tohoku Univ., Sendai (Japan)
3. Stanford Univ., CA (United States). Stanford Linear Accelerator Center; and others

The structure of three-jet b{anti b}g events has been studied using hadronic Z{sup 0} decays recorded in the SLD experiment at SLAC. Three-jet final states were selected and the CCD-based vertex detector was used to identify two of the jets as a b or {anti b}. The distributions of the gluon energy and polar angle with respect to the electron beam were examined and were compared with perturbative QCD predictions. These distributions are potentially sensitive to an anomalous b chromomagnetic moment {kappa}. The authors measure {kappa} consistent with zero and set limits on its value.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States); Boston Univ., MA (United States); California Univ., Santa Barbara, CA (United States); California Univ., Santa Cruz, CA (United States); Colorado State Univ., Fort Collins, CO (United States); Colorado Univ., Boulder, CO (United States); Univ. of Illinois at Urbana-Champaign, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Massachusetts Univ., Amherst, MA (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Oregon Univ., Eugene, OR (United States); Tennessee Univ., Knoxville, TN (United States); Univ. of Wisconsin, Madison, WI (United States); Yale Univ., New Haven, CT (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States); National Science Foundation, Washington, DC (United States); United Kingdom Particle Physics and Astronomy Research Council (United Kingdom); Istituto Nazionale di Fisica Nucleare, Rome (Italy); Japan-US Cooperative Research Project on High Energy Physics, Nagoya (Japan)
• DOE Contract Number: AC03-76SF00515; FG02-91ER40676; FG03-91ER40618; FG03-92ER40689; FG03-93ER40788; FG02-91ER40672; FG02-91ER40677; AC03-76SF00098; FG02-92ER40715; FC02-94ER40818; FG03-96ER40969; FG02-91ER40627; FG02-95ER40896; FG02-92ER40704
• OSTI ID: 537338
• Report Number(s): SLAC-PUB-7572; CONF-970787-4; ON: DE97007966; CNN: Contract PHY-91-13428; PHY-89-21320; PHY-92-03212; PHY-92-04239; PHY-95-10439; PHY-88-19316; TRN: AHC29722%%103
• Resource Relation: Conference: 18. international symposium on lepton photon interactions, Hamburg (Germany), 28 Jul - 1 Aug 1997; Other Information: PBD: Jun 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
Z NEUTRAL BOSONS
HADRONIC PARTICLE DECAY
GLUONS
B QUARKS
ANTIPARTICLES
PARTICLE DISCRIMINATION
QUANTUM CHROMODYNAMICS
FINAL-STATE INTERACTIONS
PERTURBATION THEORY
COMPARATIVE EVALUATIONS