Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 12: QCD (Theorie) 2
T 12.8: Vortrag
Dienstag, 5. März 2013, 18:30–18:45, WIL-A120
New heavy flavor contributions to DIS at the 3-loop order: different masses and nested topologies — Jakob Ablinger2, Johannes Blümlein1, Carsten Schneider2, and •Fabian Wißbrock1 — 1DESY — 2RISC - JKU LINZ
We present recent results on the heavy flavor Wilson coefficients of the deep-inelastic structure function F2 stemming from diagrams which contain both charm- and bottom-quarks. Starting at 3-loop order these contributions cannot be incorporated into the variable flavor number scheme (VFSN). We also present new results on the computation of diagrams of more advanced topologies (knotted ladder, Benz, and others) which have been obtained via the method of hyperlogarithms. They require the use of extensions to the basic formalism leading to the more general class of generalized hyperlogarithms, resp. the associated nested sums. Both the x- and Mellin N-space representations are discussed.