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NUCLEAR PHYSICS B
Volume 620, Issue 1-2, Pages 380-404Publisher
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DOI: 10.1016/S0550-3213(01)00569-7
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We show that certain classes of apparently unprotected operators in N = 4 SYM4 do not receive quantum corrections as a consequence of a partial non-renormalization theorem for the 4-point function of chiral primary operators. We develop techniques yielding the asymptotic expansion of the 4-point function of CPOs up to order O(lambda(2)) and we perform a detailed OPE analysis, Our results reveal the existence of new non-renormalized operators of approximate dimension 6. (C) 2002 Published by Elsevier Science B.V.
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