Isolated photon and photon+jet production at NNLO QCD accuracy

6 Jun 2019, 12:15
20m
Bruno Touschek Auditorium (INFN-LNF, Italy)

Bruno Touschek Auditorium

INFN-LNF, Italy

Via E. Fermi, 40 I-00044 Frascati
Talk Gamma Final States Gamma Final States

Speaker

Marius Höfer (Universität Zürich)

Description

Based on [1904.01044], I present recent results of a Next-to-Next-to-leading order (NNLO) calculation of inclusive isolated photon and photon-plus-jet production using the Monte-Carlo event generator NNLOJET. In order to mimic experimental photon isolation criteria we apply a staged isolation procedure. A Frixione-type isolation with small cone size is used to ensure numerical stability, followed by a hard-cone isolation with larger cone size, tailored to the actual experimental setup. We compare the results to recent $13\mathrm{TeV}$ data by ATLAS [1701.06882,1801.00112] and CMS [1807.00782]. We observe substantial corrections in certain kinematical regions, leading to a significant improvement of theory uncertainty and description of the data.

Primary author

Marius Höfer (Universität Zürich)

Co-authors

Presentation materials