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Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 55: Monte Carlo, Partonschauer, QCD (Theorie)

T 55.3: Talk

Tuesday, March 1, 2016, 17:15–17:30, VMP8 SR 105

Automation of soft-gluon resummation in Sherpa — •Piero Ferrarese and Steffen Schumann — II. Physikalisches Institut Georg-August-Universitaet Goettingen

We present a fully automated NLL resummation of soft-gluons in global event-shape distributions at hadron colliders, for generic QCD processes. In general, for non-additive variables, the single logarithmic piece of the resummed distribution involves integrals that are not analytically solvable. We present a new algorithm to evaluate such integral, based on Monte Carlo methods. For this purpose we employ the parton-shower formalism, as implemented in the SHERPA event generator, to efficiently generate points in the multiple emission phase space. We discuss the general layout of our approach and present exemplary results.

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