Measurement of the effective b quark fragmentation function at the Z resonance

Buskulic, D. and Finch, Alexander (1995) Measurement of the effective b quark fragmentation function at the Z resonance. Physics Letters B, 357 (4). pp. 699-714. ISSN 0370-2693

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Abstract

Using a sample of about 1.46 million hadronic Z decays collected between 1991 and 1993 with the ALEPH detector at LEP, the energy distribution of the B0 and B± mesons produced at the Z resonance is measured by reconstructing semileptonic decays B → ℓνℓD(X) or . The charmed mesons are reconstructed through the decay modes D0 → K−π+, D0 → K−π+π−π+, D+ → K−π+π+ and . The neutrino energy is estimated from the missing energy in the lepton hemisphere. Accounting for B∗ and B∗∗ production, the shape of the scaled energy distribution xE(b) for mesons containing a b quark is compared to the predictions of different fragmentation models. The mean value of xE(b) is found to be 〈xE(b)〉 = 0.715 ± 0.007(stat) ± 0.013(syst).

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
64066
Deposited By:
Deposited On:
09 May 2013 13:50
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:26