Renormalization of Wilson operators in the light-cone gauge |
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Authors: | A Andraši |
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Institution: | (1) “Rudjer Bošković” Institute, Zagreb, Croatia , HR |
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Abstract: | We test the renormalization of Wilson operators and the Mandelstam–Leibbrandt gauge in the case when the sides of the loop
are parallel to the vectors used in the M–L gauge. Graphs which in the Feynman gauge are free of ultra-violet divergences, in the M–L gauge show
double divergences and single divergences with non-local Si and Ci functions. These non-local functions cancel out when we
add all graphs together and the constraints of gauge invariance are satisfied. In Appendix C we briefly discuss the problems
of the M–L gauge for loops containing spacelike lines.
Received: 31 May 2000 / Published online: 23 January 2001 |
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