Measurement of the B Hadron Energy Distribution in Z0 Decays
K. Abe et al: The SLD Collaboration
TL;DR
This paper measures the energy distribution of B hadrons produced in Z0 decays, using semi-leptonic decay data from the SLD experiment, and compares the results with various fragmentation models.
Contribution
It provides a precise measurement of the B hadron energy distribution and tests heavy quark fragmentation models against experimental data.
Findings
Average scaled energy of B hadrons is 0.716.
Results favor certain fragmentation models over others.
Measurement uncertainties are quantified.
Abstract
We have measured the B hadron energy distribution in Z0 decays using a sample of semi-leptonic B decays recorded in the SLD experiment at SLAC. The energy of each tagged B hadron was reconstructed using information from the lepton and a partially reconstructed charm-decay vertex. We compared the scaled energy distribution with several models of heavy quark fragmentation. The average scaled energy of primary B hadrons was found to be <x_E_B> = 0.716 +- 0.011 (stat.) +0.022 -0.021 (syst.).
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