6533b82efe1ef96bd1292fc2
RESEARCH PRODUCT
Hadronization properties of b quarks compared to light quarks in e(+)e(-)-> q(q)over-bar from 183 to 200 GeV
Delphi CollaborationReyes Alemany FernándezSusana Cabrera UrbánMaría Victoria Castillo GiménezEduardo Cortina GilMaría José Costa MezquitaAntonio Ferrer SoriaJuan A. Fuster VerdúCarmen García GarcíaInés Gil BotellaJuan José Hernández ReyEmilio Higón RodríguezArantza Oyanguren CamposJosé Salt CairolsPablo Tortosa Martínezsubject
High Energy Physics::ExperimentFísica nuclearNuclear ExperimentPartícules (Física nuclear)description
The DELPHI detector at LEP has collected 54 pb^{-1} of data at a centre-of-mass energy around 183 GeV during 1997, 158 pb^{-1} around 189 GeV during 1998, and 187 pb^{-1} between 192 and 200 GeV during 1999. These data were used to measure the average charged particle multiplicity in e+e- -> b bbar events, _{bb}, and the difference delta_{bl} between _{bb} and the multiplicity, _{ll}, in generic light quark (u,d,s) events: delta_{bl}(183 GeV) = 4.55 +/- 1.31 (stat) +/- 0.73 (syst) delta_{bl}(189 GeV) = 4.43 +/- 0.85 (stat) +/- 0.61 (syst) delta_{bl}(200 GeV) = 3.39 +/- 0.89 (stat) +/- 1.01 (syst). This result is consistent with QCD predictions, while it is inconsistent with calculations assuming that the multiplicity accompanying the decay of a heavy quark is independent of the mass of the quark itself.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-01-01 |