Semileptonic decays of heavy Lambda's into excited baryons
We use the heavy quark effective theory to investigate the form factors that describe the semileptonic decays {Lambda}{sub b}{yields}{Lambda}{sub c}{sup *} and {Lambda}{sub c}{sup +}{yields}{Lambda}{sup *}, both to leading order and to order 1/m{sub c} in the effective lagrangian. In leading order, we find that a single form factor is needed in the former case, and that two are needed for each heavy {yields} light transition. We also investigate these transitions to order 1/m{sub c} in the heavy quark lagrangian, and find that the results to this order are also quite simple, although the number of form factors needed increases. We briefly discuss the relationship between our form factors and the recently developed Bjorken-Dunietz-Taron sum rules for inclusive semileptonic decays of heavy baryons.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 954344
- Report Number(s):
- CEBAF-TH-92-04; NBSSDR; TRN: US201014%%1130
- Journal Information:
- Nuclear Physics B, Vol. 389; ISSN 0169-6823
- Country of Publication:
- United States
- Language:
- English
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