Matrix-element corrections to parton shower algorithms
نویسندگان
چکیده
منابع مشابه
Matrix-Element Corrections to Parton Shower Algorithms
We discuss two ways in which parton shower algorithms can be supplemented by matrix-element corrections to ensure the correct hard limit: by using complementary phase-space regions, or by modifying the shower itself. In the former case, existing algorithms are self-consistent only if the total correction is small. In the latter case, existing algorithms are never self-consistent, a problem that...
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We discuss the need to supplement angular-ordered parton showers with a hard matrix element correction, to obtain a complete description of nal states in deep inelastic scattering. This has recently been implemented in the HERWIG Monte Carlo event generator, and we show the results.
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We present a Monte Carlo approach to prompt-photon production, where photons and QCD partons are treated democratically. The photon fragmentation function is modeled by an interleaved QCD+QED parton shower. This known technique is improved by including higher-order real-emission matrix elements. To this end, we extend a recently proposed algorithm for merging matrix elements and truncated parto...
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The transverse momentum distribution of W bosons at hadron colliders is well described by a parton-shower model for small p⊥ values, but not for large ones. This article is an attempt to give a better description of the distribution by using corrections derived from the matrix-element formalism. The parton shower for qq → W has been modified to resemble the matrix elements of qq → gW and qg → q...
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ژورنال
عنوان ژورنال: Computer Physics Communications
سال: 1995
ISSN: 0010-4655
DOI: 10.1016/0010-4655(95)00064-m