Freiburg 2008 – scientific programme

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T: Fachverband Teilchenphysik

T 11: QCD (Theorie)

T 11.1: Talk

Monday, March 3, 2008, 16:45–17:00, KGI-HS 1132

Heavy flavor cross section in deeply inelastic scattering at O(α_s²) and beyond — Isabella Bierenbaum, Johannes Blümlein, and •Sebastian Klein — DESY, Zeuthen. Platanenallee 6, 15738 Zeuthen

The differential scattering cross section for heavy flavor production in polarized deeply inelastic scattering is calculated to O(α_s²) and beyond for the structure functions g₁(x,Q²) and g₂(x,Q²) in the kinematic region Q² ≫ m². The massive operator matrix elements are calculated using the light–cone expansion in Mellin space up to the O(є) terms, which contribute to the renormalization of the 3–loop terms. The O(α_s²) results are compared with results in the literature for the structure function g₁(x,Q²).