Spin Dependent Fragmentation Functions for Heavy Flavor Baryons and Single Heavy Hyperon Polarization∗
نویسنده
چکیده
Spin dependent fragmentation functions for heavy flavor quarks to fragment into heavy baryons are calculated in a quark-diquark model. The production of intermediate spin 1/2 and 3/2 excited states is explicity included. Λb , Λc and Ξc production rate and polarization at LEP energies are calculated and, where possible, compared with experiment. A different approach, also relying on a heavy quark-diquark model, is proposed for the small momentum transfer inclusive production of polarized heavy flavor hyperons. The predicted Λc polarization is roughly in agreement with experiment. This work is supported in part by funds provided by the U.S. Department of Energy (D.O.E.) #DE-FG02-92ER40702 and #DF-FC02-94ER40818. email: [email protected] Permanent address
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