Speaker: Matti Heikinheimo (YorkU)

Title: How many supersymmetries? - observing Dirac gluinos at the LHC.

Abstract: Supersymmetry (SUSY) is one of the strongest candidate theories for
physics beyond the Standard Model (SM). It is typically assumed that the number
of SUSY generators is one, i.e. that for each SM fermion there is exactly one
bosonic partner and vice versa. In the matter sector this has to be the case to
keep the SM fermions chiral, but it is possible to extend the supersymmetry of
the gauge sector to two SUSY generators, or N=2. In this case the gauginos
become Dirac fermions. We show that in N=2 SUSY squark masses of a few hundred
TeV are still experimentally allowed, and we propose a method to identify the
Dirac nature of the gluino, based on the ATLAS search for jets and missing
transverse momentum.