Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-10-05
JHEP0411:004,2004
Physics
High Energy Physics
High Energy Physics - Theory
Minor changes and typos fixed. Published version in JHEP
Scientific paper
10.1088/1126-6708/2004/11/004
One-loop maximal helicity violating (MHV) amplitudes in N=4 super Yang-Mills (SYM) theories are analyzed, using the prescription of Cachazo, Svrcek, and Witten (CSW). The relations between leading N_c amplitudes A_{n;1} and sub-leading amplitudes A_{n;c} obtained by the CSW prescription are found to be identical to those obtained from conventional field theory calculations. Combining with existing results, this establishes the validity of the CSW prescription to one-loop in the calculation of MHV amplitudes in N=4 SYM theories of finite N_c.
Luo Ming-xing
Wen Congkao
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