6533b833fe1ef96bd129be31
RESEARCH PRODUCT
Measurement of the multiplicity of gluons splitting to bottom quark in hadronic Z° decays
Delphi CollaborationReyes Alemany FernándezSusana Cabrera UrbánMaría Victoria Castillo GiménezEduardo Cortina GilAntonio Ferrer SoriaJuan A. Fuster VerdúCarmen García GarcíaJuan José Hernández ReyEmilio Higón RodríguezCarlos Lacasta LlácerFernando Martínez VidalSergio Navas ConchaJosé Salt Cairolssubject
High Energy Physics::PhenomenologyHigh Energy Physics::ExperimentFísica nuclearPartícules (Física nuclear)description
An inclusive measurement of the average multiplicity of bb pairs from gluons, gbb, in hadronic Z0 events collected by the DELPHI experiment at LEP, is presented. A counting technique, based on jet b-tagging in 4-jet events, has been used. Looking for secondary bottom production in events with production of any primary flavour, by requiring two b-tagged jets in well defined topological configurations, gave gbb = (0.21 +/- 0.11 (stat) +/- 0.09(syst)) %. This result was checked with a different method designed to select events with four b quarks in the final state. Agreement within the errors was found.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-01-01 |