The structure of (Formula presented) events was studied using (Formula presented) 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 b or (Formula presented) 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 b chromomagnetic moment κ. We measured κ to be consistent with zero and set the first limits on its value: (Formula presented) at 95% C.L.
|Physical Review D - Particles, Fields, Gravitation and Cosmology
|Published - 1999