A measurement of the fraction of hadronic Z decays in which a, gluon splits into a b (b) over bar pair, g(b (b)over bar), is presented using data collected by ALEPH from 1992 to 1995 at the Z resonance. The selection is based on four-jet events. Events are selected by means of topological cuts and a lifetime tag. The result is g(b(b)over bar) = (2.77 +/- 0.42(stat) +/- 0.57(syst)) x 10(-3).

R., B., D., B., D., D., P., G., C., G., J. P., L., et al. (1998). A measurement of the gluon splitting rate into b(b)over bar pairs in hadronic Z decays. PHYSICS LETTERS. SECTION B, 434(3-4), 437-450 [10.1016/S0370-2693(98)00850-8].

A measurement of the gluon splitting rate into b(b)over bar pairs in hadronic Z decays

CIOCCI, MARIA AGNESE;MARROCCHESI, PIER SIMONE;
1998-01-01

Abstract

A measurement of the fraction of hadronic Z decays in which a, gluon splits into a b (b) over bar pair, g(b (b)over bar), is presented using data collected by ALEPH from 1992 to 1995 at the Z resonance. The selection is based on four-jet events. Events are selected by means of topological cuts and a lifetime tag. The result is g(b(b)over bar) = (2.77 +/- 0.42(stat) +/- 0.57(syst)) x 10(-3).
1998
R., B., D., B., D., D., P., G., C., G., J. P., L., et al. (1998). A measurement of the gluon splitting rate into b(b)over bar pairs in hadronic Z decays. PHYSICS LETTERS. SECTION B, 434(3-4), 437-450 [10.1016/S0370-2693(98)00850-8].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/37600
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