Phys. Rev. D 77, 014020 (2008) [14 pages]Diquarks and Λb→Λc weak decaysReceived 15 October 2007; published 23 January 2008 In this work we investigate the weak Λb→Λc semileptonic and nonleptonic decays. The light-front quark model and diquark picture for heavy baryons are adopted to evaluate the Λb→Λc transition form factors. In the heavy quark limit we study the Isgur-Wise function. The transition form factors are obtained in the whole physical momentum regions. The numerical predictions on the branching ratios of nonleptonic decay modes Λb→ΛcM and various polarization asymmetries are made. A comparison with other approaches is discussed. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.77.014020
DOI:
10.1103/PhysRevD.77.014020
PACS:
13.30.−a, 12.39.Ki, 14.20.Lq, 14.20.Mr
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