26th Australian Institute of Physics Congress and the Australian and New Zealand Conference on Optics and Photonics

Matrix-element corrections for QED radiation in hadron decays

Not scheduled

20m

Belinda Hutchinson Building (The University of Sydney )

Poster AIP | Nuclear and Particle Physics (NUPP)

Speaker

Giacomo Morgante (Monash University)

Description

An accurate accounting of QED radiation in hadron decays is key for high precision measurements at colliders, particularly for particle selection and reconstruction. We present a general framework for the description of QED antenna parton showers in decays of hadrons. Additionally, we incorporate corrections derived from exact tree-level matrix elements for decays involving (pseudo)scalar mesons into spin-0 and spin-1/2 particles and describe a generic procedure to obtain such matrix elements using FeynRules and MadGraph. We provide an explicit implementation of the method within the VINCIA parton-shower and compare the resulting decay spectra to those generated with EVTGEN interfaced to PHOTOS++ and SHERPA's PHOTONS module.