We calculate the O(\varepsilon )-term of the two-loop massive operator matrix elements for twist 2-operators, which contribute to the heavy flavour Wilson coefficients in unpolarised deep-inelastic scattering in the asymptotic limit Q2 \gg m2. Our calculation was performed in Mellin space using Mellin--Barnes integrals and generalised hypergeometric functions. The O(\varepsilon )-term contributes in the renormalisation at 3-loop order.
PACS numbers: 12.38.Bx, 12.20.Ds, 12.38.--t, 14.65.Dw
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