Analysis of the Isgur-Wise function of the ${\Lambda }_b\to {\Lambda }_c$ transition with light-cone QCD sum rules

Abstract

In this article, we use the light-cone QCD sum rules to relate the ${\Lambda }_b$ baryon light-cone distribution amplitudes to the Isgur-Wise function $\xi (\omega )$ of the ${\Lambda }_b\to {\Lambda }_c$ transition, and obtain a simple relation. The numerical value of the Isgur-Wise function $\xi (\omega )$ is consistent with the prediction of the QCD sum rules.

Comments: 7 pages, 2 figures, slight revision