14-17 December 2014
Dr. Holms Hotel, Geilo, Norway
Europe/Zurich timezone

Explaining a CMS dilepton excess with the MSSM golden cascade

16 Dec 2014, 10:35
20m
Dr. Holms Hotel, Geilo, Norway

Dr. Holms Hotel, Geilo, Norway

Speaker

Anders Kvellestad (University of Oslo)

Description

Recently CMS reported a small excess in a search for opposite-sign same-flavor leptons produced in conjunction with two jets and missing transverse momentum. The excess was found to be consistent with a kinematic edge in the invariant mass spectrum of the leptons. We present a possible interpretation of this excess in terms of squark pair production followed by a ‘golden cascade’ decay for one of the squarks, producing the edge in the dilepton spectrum. We identify models that fit the observed event rate while still passing other collider constraints, and present predictions for the production cross section at 13 TeV. Some of the identified models also predict a relic density of neutralino dark matter compatible with the value inferred from cosmological observations.

Primary author

Anders Kvellestad (University of Oslo)

Presentation Materials