A measurement of the fraction of hadronic Z decays in which a gluon splits into a bb̄ pair, gbb̄, 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 gbb̄ = (2.77 + 0.42(stat) + 0.57(syst)) × 10-3.

Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1998). A measurement of the gluon splitting rate into bb̄ 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 bb̄ pairs in hadronic Z decays

CARPINELLI, Massimo;
1998

Abstract

A measurement of the fraction of hadronic Z decays in which a gluon splits into a bb̄ pair, gbb̄, 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 gbb̄ = (2.77 + 0.42(stat) + 0.57(syst)) × 10-3.
Articolo in rivista - Articolo scientifico
Physics
English
1998
434
3-4
437
450
none
Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1998). A measurement of the gluon splitting rate into bb̄ pairs in hadronic Z decays. PHYSICS LETTERS. SECTION B, 434(3-4), 437-450 [10.1016/S0370-2693(98)00850-8].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390127
Citazioni
  • Scopus 41
  • ???jsp.display-item.citation.isi??? 41
Social impact