PIRSA:13030099

Video URL

https://pirsa.org/13030099

The correlator of two vector and one axial current in QCD

Melnikov, K. (2013). The correlator of two vector and one axial current in QCD. Perimeter Institute for Theoretical Physics. https://pirsa.org/13030099

Melnikov, Kirill. The correlator of two vector and one axial current in QCD. Perimeter Institute for Theoretical Physics, Mar. 05, 2013, https://pirsa.org/13030099 

          @misc{ scivideos_PIRSA:13030099,
            doi = {10.48660/13030099},
            url = {https://pirsa.org/13030099},
            author = {Melnikov, Kirill},
            keywords = {Particle Physics},
            language = {en},
            title = {The correlator of two vector and one axial current in QCD},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2013},
            month = {mar},
            note = {PIRSA:13030099 see, \url{https://scivideos.org/pirsa/13030099}}
          }

Kirill Melnikov Johns Hopkins University

Talk numberPIRSA:13030099
DOI10.48660/13030099
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

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.