Hadroproduction of t anti-t pair in association with an isolated photon at NLO accuracy matched with parton shower

Adam Kardos, Z. Trócsányi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Abstract: We simulate the hadroproduction of a tt¯$$ \mathrm{t}\overline{\mathrm{t}} $$-pair in association with a hard photon at LHC using the PowHel package. These events are almost fully inclusive with respect to the photon, allowing for any physically relevant isolation of the photon. We use the generated events, stored according to the Les-Houches event format, to make predictions for differential distributions formally at the next-to-leading order (NLO) accuracy and we compare these to existing predictions accurate at NLO using the smooth isolation prescription of Frixione. Our fixed-order predictions include the direct-photon contribution only. We also make predictions for distributions after full parton shower and hadronization using the standard experimental cone-isolation of the photon.

Original languageEnglish
Article number90
JournalJournal of High Energy Physics
Volume2015
Issue number5
DOIs
Publication statusPublished - May 27 2015

Keywords

  • Monte Carlo Simulations
  • NLO Computations

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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