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- The correlator of two vector and one axial current in QCD

It is known that the correlator

of one axial and two vector currents, that receives leading contributions

through one-loop fermion triangle diagrams, is not modified by QCD radiative

corrections at two loops. It was suggested that this non-renormalization of the

VVA correlator persists in higher orders in perturbative QCD as well. To check

this assertion, I compute the three-loop QCD corrections to the

VAA-correlator using the technique of asymptotic expansions. I find that

these corrections do not vanish and that they are proportional to the QCD

beta-function. I will also review some properties of the VVA correlator that were discovered in recent years.

Collection/Series:

Event Type:

Seminar

Scientific Area(s):

Speaker(s):

Event Date:

Tuesday, March 5, 2013 - 13:00 to 14:30

Location:

Space Room

©2012 Perimeter Institute for Theoretical Physics