Study of the Structure of e{sup +}e{sup {minus}} {r_arrow} b{bar b}g Events and Improved Limits on the Anomalous Chromomagnetic Coupling of the b-Quark
- SLAC
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 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 b or {bar b}. Distributions of the gluon energy and polar angle were measured over the full kinematic range, and compared with perturbative QCD predictions. The energy distribution is potentially sensitive to an anomalous b chromomagnetic moment {kappa}. We measured {kappa} to be consistent with zero and set limits on its value, {minus}0.11 < {kappa} < 0.08 at 95% c.l. (preliminary).
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 10085
- Report Number(s):
- SLAC-PUB-8155
- Country of Publication:
- United States
- Language:
- English
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