Semileptonic $B_{c}^{-}\to D^{*0}\ell\nu$ transition in three--point QCD sum rules and HQET with gluon condensate corrections

TL;DR

This paper calculates the form factors and decay properties of the semileptonic Bc to D*0 transition using three-point QCD sum rules, including gluon condensate effects, and compares results with other approaches.

Contribution

It introduces gluon condensate corrections into the three-point QCD sum rules for Bc to D*0 transitions and computes the HQET limit of the form factors.

Findings

Form factors are calculated with gluon condensate contributions.

Total decay width and branching ratio are evaluated.

Results are compared with other non-perturbative methods.

Abstract

Taking into account the gluon condensate contributions, the form factors of the semileptonic $B_c^- \to D^{*0}\ell\nu$ transition with $l=\tau, e$ are calculated in the framework of the three point QCD sum rules. The heavy quark effective theory limit of the form factors are also computed. The relevant total decay width as well as the branching ratio are evaluated and compared with the predictions of the other non-perturbative approaches.