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T: Fachverband Teilchenphysik

T 20: QCD (Theorie) 1

T 20.3: Vortrag

Montag, 24. März 2014, 11:30–11:45, P110

Pure-singlet heavy flavour contributions to DIS — •Arnd Behring¹, Johannes Blümlein¹, Abilio de Freitas¹, Andreas von Manteuffel², and Carsten Schneider³ — ¹Deutsches Elektronen Synchrotron DESY, Zeuthen, Germany — ²PRISMA Cluster of Excellence and Institute of Physics, J. Gutenberg University, Mainz, Germany — ³Research Institute for Symbolic Computation (RISC), Johannes Kepler University, Linz, Austria

Heavy quark flavours yield an essential contribution to deep-inelastic structure functions. They are relevant for the extraction of PDFs from ep scattering data. These massive contributions factorize in the kinematic region Q² ≫ m² into massless Wilson coefficients H_ij^k and massive operator matrix elements A_ij^k. We present recent results on the pure singlet massive operator matrix element A_Qq^PS,(3)(x,µ²) and the Wilson coefficient H_Qq^PS(x,Q²) at 3-loop order, give details on their calculation and present numerical predictions for experiment.