OMS-bar scheme of UV renormalization in the presence of unstable fundamental particles release_7cspwthu7vfv7hzsjfrtvjl3lu

by M. L. Nekrasov

Released as a article .

2001  

Abstract

A generalization of the on-mass-shell scheme of UV renormalization (the OMS-bar scheme) to the case of presence of unstable fundamental particles (like W and Z bosons) is proposed. Its basic ingredients are as follows: (i) the renormalized mass coincides with a real part of the position of the complex pole of the corresponding propagator, (ii) the imaginary part of the on-shell self-energy coincides with the imaginary part of the complex pole position. The latter property implies the gauge-invariance of the imaginary part of the on-shell self-energy in the OMS-bar scheme and its connection with the lifetime of an unstable particle. Starting with the three-loops this connection becomes nontrivial.
In text/plain format

Archived Content

There are no accessible files associated with this release. You could check other releases for this work for an accessible version.

"Dark" Preservation Only
Save Paper Now!

Know of a fulltext copy of on the public web? Submit a URL and we will archive it

Type  article
Stage   submitted
Date   2001-02-23
Version   v1
Language   en ?
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
Catalog Record
Revision: 996d056c-8be5-40d4-9942-1cbd46759d1b
API URL: JSON