paper

The semi-leptonic form factors of $I^_{b} \to I^_{c}$ and $I^_{b} \to I^_{c}$ in QCD sum rules

arXiv:2010.07150 · doi:10.1140/epjc/s10052-020-08767-1

Abstract

In this work, the full leading order results of the form factors for $I^_{b} \to I^_{c}$ and $I^_{b} \to I^_{c}$ are obtained in QCD sum rules. Contributions from up to dim-5 have been considered. For completeness, we also study the two-point correlation function to obtain the pole residues of $I^_{Q}$ and $I^_{Q}$ , and higher accuracy is achieved. For the three-point correlation function, since stable Borel regions can not be found, about $20%$ uncertainties are introduced for the form factors of $I^_{b} \to I^_{c}$ and $I^_{b} \to I^_{c}$ . Our results for the form factors are consistent with those of the Lattice QCD within errors.

17 pages, 5 figures

The semi-leptonic form factors of I^b​→I^c​ and I^b​→I^c​ in QCD sum rules

Abstract

The semi-leptonic form factors of $I^_{b} \to I^_{c}$ and $I^_{b} \to I^_{c}$ in QCD sum rules