QCD SUM-RULE ANALYSIS FOR THE LAMBDA(B)-]LAMBDA(C) SEMILEPTONIC DECAY

Authors
DAI YB HUANG CS HUANG MQ LIU C
Citation
Yb. Dai et al., QCD SUM-RULE ANALYSIS FOR THE LAMBDA(B)-]LAMBDA(C) SEMILEPTONIC DECAY, Physics letters. Section B, 387(2), 1996, pp. 379-385
Citations number
42
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
387
Issue
2
Year of publication
1996
Pages
379 - 385
Database
ISI
SICI code
0370-2693(1996)387:2<379:QSAFTL>2.0.ZU;2-4
Abstract
The 1/m(c) and 1/m(b) corrections to the Lambda(b) --> Lambda(c) semil eptonic decay are analyzed by QCD sum rules, Within the framework of h eavy quark effective theory, the subleading baryonic Isgur-Wise functi on of Lambda(b) --> Lambda(c) has been calculated. It is shown that th e corrections due to the 1/m Lagrangian insertion are negligibly small . The sizable 1/m(Q) effect to the decay lies only in the weak current . The decay spectrum and the branching ratio are given.