Abstract
Two-gluon radiative corrections to the $b\ensuremath{\rightarrow}c\ensuremath{\ell}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$ decay width have been computed analytically as an expansion in terms of $\frac{{m}_{c}}{{m}_{b}}\ensuremath{\ll}1$ in the kinematical limit of zero lepton invariant mass. The obtained results match smoothly with a previously known expansion around $(1\ensuremath{-}\frac{{m}_{c}}{{m}_{b}})\ensuremath{\ll}1$. Together they describe the process $b\ensuremath{\rightarrow}c\ensuremath{\ell}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$ for all mass ratios $\frac{{m}_{c}}{{m}_{b}}$.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
