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arXiv · 0912.3501

Hard photon production and matrix-element parton-shower merging

Stefan Hoeche·Steffen Schumann·Frank Siegert
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Abstract

We present a Monte-Carlo approach to prompt-photon production, where photons and QCD partons are treated democratically. The photon fragmentation function is modelled 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 parton showers. We exemplify the quality of the Monte-Carlo predictions by comparing them to measurements of the photon fragmentation function at LEP and to measurements of prompt photon and diphoton production from the Tevatron experiments.

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Stefan Hoeche, Steffen Schumann, Frank Siegert. 2009-12-17. Hard photon production and matrix-element parton-shower merging. https://doi.org/10.1103/physrevd.81.034026

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