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Institut de Recherche sur les Lois Fondamentales de l'Univers

Résumé du preprint DAPNIA/SPP/97-01

SPP/97-01
Production of orbitally excited D mesons in Aleph
P. Colas
Abstract:
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From nearly 4 millions Z decays recorded in the ALEPH detector, measurements of
the production of excited charmed states are performed.  The known narrow L=1
states are searched for in charm hadronization and in b semileptonic decays
separately.  In addition, in the case of b semileptonic decays, a topological
analysis shows evidence for production of both narrow and wide states.