3-8 July 2016
The University of Melbourne
Australia/Melbourne timezone

The 750 GeV diphoton excess: models and precision tools

4 Jul 2016, 14:40
20m
Alice Hoy Room 225 ()

Alice Hoy Room 225

Talk SUSY Models SUSY Models

Speaker

Dylan Harries (University of Adelaide)

Description

Indications from ATLAS and CMS of a potential new resonance at 750 GeV have seen a wide range of models put forward to explain the excess. Obtaining precise theoretical predictions for a given model can be a formidable computational challenge. On the other hand, relying on simpler analytical approximations often leads to important subtleties being neglected or missed. Here we describe extensions to the Mathematica package SARAH and
the spectrum generators FlexibleSUSY and SPheno that enable the automatic calculation of the required diphoton and digluon rates, including crucial higher order corrections, in a large class of models. We have implemented a large number of models presented in the recent literature. We explain how these may be used to rigorously test the proposed models, emphasising cases in which the use of the tools makes a significant difference to the final
results. We then formulate a new SUSY model capable of accommodating the diphoton excess with a large width, and demonstrate the utility of the set-up by studying the new model in detail without having to neglect physically important effects.

Primary author

Florian Staub (CERN)

Co-authors

Alexander Voigt (DESY) Avelino Vicente Montesinos (LPT Orsay / CNRS - U. Paris Sud) Dylan Harries (University of Adelaide) Kilian Nickel (Bonn University) Lorenzo Basso (Marseille, CPPM) Lorenzo Ubaldi (Tel Aviv University) Dr Manuel E. Krauss (Bonn University) Mark Goodsell (Paris, LPTHE) Peter Athron Toby Opferkuch (Universität Bonn)

Presentation Materials