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T: Teilchenphysik

T 605: Ph
änomenologie II

T 605.5: Vortrag

Freitag, 31. März 2006, 12:35–12:55, HG2-HS6

QCD Matrix Elements and Parton Showers — •Simon Plätzer — Institut für Theoretische Physik, Universität Karlsruhe

In order to improve the description of jet observables in the region of hard parton emission, Catani, Krauss, Kuhn and Webber have proposed a method [1] to combine tree-level QCD matrix elements with parton shower simulations for e⁺e⁻→ jets. This scheme can be extended to the case of hadronic interactions [2].

Recent developments on a CKKW-type ME/PS combination algorithm in the Herwig++ parton shower Monte Carlo are presented. It is discussed, to what extent modifications to the scheme may become necessary to account for the new evolution variables [3] used in Herwig++, which treat heavy quark jets more appropriate.

[1] S.Catani et al., JHEP 0111:063,2001 [hep-ph/0109231]

[2] F. Krauss, JHEP 0208:015,2002 [hep-ph/0205283]

[3] S. Gieseke et al., JHEP 0312:045,2003 [hep-ph/0310083]