Abstract
The nonperturbative method in quantum chromodynamics based on a new small expansion parameter is applied to the description of the semi-lepton inclusive decay of the τ lepton. The contribution of renormalon chains are taken into account with a special representation for the effective current coupling constant. With calculations to O(a5), we show that the renormalon contribution is significant when the value of the strong coupling constant from the experimental data on τ decay is included. Evolution of the value obtained for the coupling constant to the scale of the Z boson leads to good agreement with the available experimental data for the RZ ratio.
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.
