The MHV QCD Lagrangian

Ettle, James H, Morris, Tim R and Xiao, Zhiguang (2008) The MHV QCD Lagrangian. Journal of High Energy Physics, 2008, (08), 103. (doi:10.1088/1126-6708/2008/08/103).


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We perform a canonical change of the field variables of light-cone gauge massless QCD to obtain a lagrangian whose terms are proportional up to polarisation factors to MHV amplitudes and continued off shell by the CSW prescription. We solve for this transformation as a series expansion to all orders in the new fields, and use this to prove that the resulting vertices are indeed MHV vertices as claimed. We also demonstrate how this works explicitly for the vertices with: two quarks and two gluons, four quarks, and a particular helicity configuration of two quarks and three gluons. Finally, we generalise the construction to massive QCD.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1088/1126-6708/2008/08/103
Related URLs:
Divisions : University Structure - Pre August 2011 > School of Physics and Astronomy > Southampton High Energy Physics
ePrint ID: 145629
Accepted Date and Publication Date:
August 2008Published
Date Deposited: 25 May 2010 10:18
Last Modified: 31 Mar 2016 13:20

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