Abstract
Exclusive semileptonic decays to excited charmed baryons are investigated at order in the heavy quark effective theory. The differential decay rates are analyzed for the and the They receive corrections at zero recoil that are determined by mass splittings and the leading order Isgur-Wise function. With some assumptions, we find that the branching fraction for decays to these states is 2.5–3.3%. The decay rate to the helicity states, which vanishes for remains small at order since corrections do not contribute. Matrix elements of weak currents between a and other excited states are analyzed at zero-recoil to order Applications to baryonic heavy quark sum rules are explored.
- Received 10 November 1997
DOI:https://doi.org/10.1103/PhysRevD.57.5620
©1998 American Physical Society