出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We calculate the O(e )–term of the two–loop massive operator matrix elements for twist 2–
operators, which contribute to the heavy flavourWilson coefficients in unpolarized deep–inelastic
scattering in the asymptotic limit Q2 ≫m2. Our calculation was performed in Mellin space using
Mellin–Barnes integrals and generalized hypergeometric functions. The O(e )–term contributes in
the renormalization at 3–loop order.
