Talk presented by Chris Stewart

Parallel Session: Heavy Quarks II

Tuesday June 29th, 18.00 - 18.20, Pacinotti Room

Pushing NRQCD to the limit

Abstract: The NRQCD action has given accurate results for the upsilon spectrum, though shows indications of poor convergence for charmonium. We report on an inverstigation into the behaviour of quarkonium and baryon spectra as the quark mass is reduced and relativistic effects become important. Results obtained using improved NRQCD and Wilson/SW actions will be compared.

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