Hadronization properties of b quarks compared to light quarks in e+e- -> q qbar from 183 to 200 GeV
(2000) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 479, n° 1-3, p. 118-128 (2000)
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- 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, <n>_{bb}, and the difference delta_{bl} between <n>_{bb} and the multiplicity, <n>_{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.
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Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (2000). Hadronization properties of b quarks compared to light quarks in e+e- -> q qbar from 183 to 200 GeV. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 479(1-3), 118-128. https://doi.org/10.1016/S0370-2693(00)00312-9 (Original work published 2000)