Simulation of QED Radiation in Particle decays using the YFS Formalism

Details Simulation of QED Radiation in Particle decays using the YFS Formalism Simulation of QED Radiation in Particle decays using the YFS Formalism

2006-03-03

arxiv.org/abs/hep-ph/0603034v2

JHEP0607:010,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 7 figures; Minor revisions: more details given on the validity of the approximation used, additional histogram to ad

Scientific paper

10.1088/1126-6708/2006/07/010

In this paper we describe a program (SOPHTY) implementing QED corrections to decays in the HERWIG++ event generator. In order to resum the dominant soft emissions to all orders, the program is based on the YFS formalism. In addition, universal large collinear logarithms are included and the approach can be systematically extended to incorporate exact, process specific, higher order corrections to decays. Due to the large number of possible decay modes the program is designed to operate, as far as possible, independently of the decay matrix elements.

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