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arXiv · 0905.3072

A modified CKKW matrix element merging approach to angular-ordered parton showers

Keith Hamilton·Peter Richardson·Jon Tully
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Abstract

A modified version of the CKKW matrix element merging algorithm is presented, suitable for use in an angular-ordered parton shower, using truncated showers and forced splittings. The algorithm is implemented in the Herwig++ Monte Carlo event generator for the benchmark process e+e- -> hadrons. Results are presented at parton and hadron levels, demonstrating a smooth merging between the matrix elements and parton shower and an improved description of LEP data.

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Keith Hamilton, Peter Richardson, Jon Tully. 2009-05-19. A modified CKKW matrix element merging approach to angular-ordered parton showers. https://doi.org/10.1088/1126-6708/2009/11/038

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