The branching fraction of Z → bb relative to all hadronic decays of the Z has been measured using event shape variables to preferentially select Z → bb events. The method chosen applies a combination of shape discriminators and the selection of high transverse momentum leptons to event hemispheres. From a sample of 440 000 hadronic Z decays collected with the ALEPH detector at LEP, the ration Γbb Γhad = 0.228±0.005(stat.)±0.005(syst.) is measured.

Buskulic, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1993). Measurement of the ratio Γbb Γhad using event shape variables. PHYSICS LETTERS. SECTION B, 313(3-4), 549-563 [10.1016/0370-2693(93)90029-H].

Measurement of the ratio Γbb Γhad using event shape variables

CARPINELLI, Massimo;
1993

Abstract

The branching fraction of Z → bb relative to all hadronic decays of the Z has been measured using event shape variables to preferentially select Z → bb events. The method chosen applies a combination of shape discriminators and the selection of high transverse momentum leptons to event hemispheres. From a sample of 440 000 hadronic Z decays collected with the ALEPH detector at LEP, the ration Γbb Γhad = 0.228±0.005(stat.)±0.005(syst.) is measured.
Articolo in rivista - Articolo scientifico
Physics
English
549
563
15
Buskulic, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1993). Measurement of the ratio Γbb Γhad using event shape variables. PHYSICS LETTERS. SECTION B, 313(3-4), 549-563 [10.1016/0370-2693(93)90029-H].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390419
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