Abstract
We study the relationship between the MS¯ Yukawa coupling and the pole mass for the bottom and top quarks at the two-loop electroweak order O(α2) in the gaugeless limit of the standard model. We also consider the MS¯ to pole mass relationships at this order, which include tadpole contributions to ensure the gauge independence of the MS¯ masses. In order to suppress numerically large tadpole contributions, we propose a redefinition of the running heavy-quark mass in terms of the MS¯ Yukawa coupling. We also present Δr in the MS¯ scheme at O(α2) in the gaugeless limit. As an aside, we also list the exact two-loop expression for the mass counterterms of the bottom and top quarks.
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.
