The structure of e(+) e(-) --> <b(b)over bar>g events was studied using Z(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 b or (b) over bar. 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 kappa. We measured kappa to be consistent with zero and set the first limits on its value: -0.17<kappa<0.11 at 95% C.L. [S0556-2821(99)01121-2].
Study of the structure of e(+)e(-)-> b(b)over-bar-g events and first limits on the anomalous chromomagnetic coupling of the b quark
BISELLO, DARIO;
1999
Abstract
The structure of e(+) e(-) --> g events was studied using Z(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 b or (b) over bar. 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 kappa. We measured kappa to be consistent with zero and set the first limits on its value: -0.17Pubblicazioni consigliate
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