O(N_f alpha^2) Electromagnetic Charge Renormalization in the Standard Model
Abstract
The O(N_f alpha^2) electroweak radiative corrections to the Thomson scattering matrix element are calculated for a general renormalization scheme with massless fermions. All integrals can be evaluated exactly in dimensional regularization which in several cases yields new results that are remarkably simple in form. A number of stringent internal consistency checks are performed. The Zgamma mixing complicates the calculation of 1particle reducible diagrams considerably at this order and a general treatment of this problem is given. Conditions satisfied by O(N_f alpha^2) counterterms are derived and may be applied to other calculations at this order.
 Publication:

arXiv eprints
 Pub Date:
 May 1998
 DOI:
 10.48550/arXiv.hepph/9805364
 arXiv:
 arXiv:hepph/9805364
 Bibcode:
 1998hep.ph....5364M
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 29 pages LaTeX. 6 figures. Uses amsmath.sty, cite.sty and epsfig.sty