Bounds on heavy-to-heavy baryonic form factors - art. no. 016005

Upper and lower bounds are established on the Lambda(b) --> Lambda(c) semil eptonic decay form factors by utilizing inclusive heavy-quark-effective-the ory sum rules. These bounds are calculated to leading order in Lambda(QCD)/ m(Q) and alpha(s). The O(alpha(s)(2)beta(0)) corrections to the bounds at z ero recoil are also presented. Several form factor models used in the liter ature are compared with our bounds.