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arxiv: 1106.3939 · v1 · submitted 2011-06-20 · ✦ hep-ph

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Next-to-Leading-Order Monte Carlo Simulation of Diphoton Production in Hadronic Collisions

Luca D'Errico , Peter Richardson
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classification ✦ hep-ph
keywords next-to-leading-orderproductionshowersimulationcollisionsdiphotonpartonphoton
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We present a method, based on the positive weight next-to-leading-order matching formalism (POWHEG), to simulate photon production processes at next-to-leading-order (NLO). This technique is applied to the simulation of diphoton production in hadron-hadron collisions. The algorithm consistently combines the parton shower and NLO calculation, producing only positive weight events. The simulation includes both the photon fragmentation contribution and a full implementation of the truncated shower required to correctly describe soft emissions in an angular-ordered parton shower.

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