Charm Hadrons from Fragmentation and B decays in e+e- Annihilation at $\sqrt{s}=$10.6 GeV

Details Charm Hadrons from Fragmentation and B decays in e+e- Annihilation at $\sqrt{s}=$10.6 GeV Charm Hadrons from Fragmentation and B decays in e+e- Annihilation at $\sqrt{s}=$10.6 GeV

2005-06-27

arxiv.org/abs/hep-ex/0506068v2

Phys.Rev.D73:032002,2006

Physics

High Energy Physics

High Energy Physics - Experiment

51 pages, 11 figures, replaced with version as in journal

Scientific paper

10.1103/PhysRevD.73.032002

We present an analysis of charm quark fragmentation at 10.6 GeV, based on a data sample of 103 fb collected by the Belle detector at the KEKB accelerator. We consider fragmentation into the main charmed hadron ground states, namely \DZ, \DP, \Ds and \LC, as well as the excited states \DSZ and \DSP. The fragmentation functions are important to measure as they describe processes at a low energy scale, where calculations in perturbation theory lead to large uncertainties. Fragmentation functions can also be used as input distributions for Monte Carlo generators. Additionally, we determine the average number of these charmed hadrons produced per B decay at the \Ys resonance and measure the distribution of their production angle in \epem annihilation events and in B decays.

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