Two-loop massive operator matrix elements for unpolarized heavy flavor production to

Two–Loop Massive Operator Matrix Elements for Unpolarized Heavy Flavor Production to O(ǫ)

We calculate the O(αs) massive operator matrix elements for the twist–2 operators, which contribute to the heavy flavor Wilson coefficients in unpolarized deeply inelastic scattering in the region Q2 ≫ m2, up to the O(ε) contributions. These terms contribute through the renormalization of the O(αs) heavy flavor Wilson coefficients of the structure function F2(x,Q 2). The calculation has been pe...

arXiv:0803.0273 [hep-ph] Two–Loop Massive Operator Matrix Elements for Unpolarized Heavy Flavor Production to O(ǫ)

SFB / CPP – 07 – 11 March 2007 Two – Loop Massive Operator Matrix Elements and Unpolarized Heavy Flavor Production at Asymptotic Values Q 2 ≫

We calculate the O(αs) massive operator matrix elements for the twist–2 operators, which contribute to the heavy flavor Wilson coefficients in unpolarized deeply inelastic scattering in the region Q2 ≫ m2. The calculation has been performed using light–cone expansion techniques. We confirm an earlier result obtained in [1]. The calculation is carried out without using the integration-by-parts m...

Heavy Flavour Production in Deep–Inelastic Scattering - Two–Loop Massive Operator Matrix Elements and Beyond

We calculate the O(ε)–term of the two–loop massive operator matrix elements for twist 2–operators, which contribute to the heavy flavour Wilson coefficients in unpolarized deep–inelastic scattering in the asymptotic limit Q ≫ m. Our calculation was performed in Mellin space using Mellin– Barnes integrals and generalized hypergeometric functions. The O(ε)–term contributes in the renormalization ...

Two-loop Massive Fermionic Operator Matrix Elements and Intial State Qed Corrections to E Two-loop Massive Fermionic Operator Matrix Elements

We describe the calculation of the two–loop massive operator matrix elements for massive external fermions. These matrix elements are needed for the calculation of the O(α 2) initial state radiative corrections to e + e − annihilation into a neutral virtual gauge boson, based on the renor-malization group technique.