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Three loop anomalous dimension of the second moment of the transversity operator in the MSbar and RI' schemes

J. A. Gracey

hep-pharXiv:hep-ph/0306163

Abstract

We compute the anomalous dimension of the second moment of the transversity operator, ψ σμν Dρψ, at three loops in both the MSbar and RI' schemes. As a check on the result we also determine the O(1/Nf) critical exponent of the n-th moment of the transversity operator in d-dimensions in the large Nf expansion and determine leading order information on the n dependence of the anomalous dimension at three and four loops in MSbar. In addition the RI' anomalous dimension of the non-singlet twist-2 operator, ψ γμDνψ, is also determined.

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