“Searches for Coloured Supersymmetry with ATLAS at √s = 8 TeV, 13 TeV, and 14 TeV”
Ingrid Deigaard, promovenda aan het Nikhef, verdedigt haar proefschrift woensdag 30 november 2016 aan de Universiteit van Amsterdam.
The Standard Model of particle physics is describing the interactions of the smallest constituents
in the Universe: the elementary particles which are divided into matter particles, leptons, and
force carrying particles, bosons. The fundament of the Standard Model is symmetries which
dictate the particle content and their interactions. By introducing a new type of symmetry,
supersymmetry, between leptons and bosons predicting a bosonic partner of each Standard Model
fermion and vice versa, some of the shortcomings of the Standard Model can be fixed. The
supersymmetric partners of the Standard Model particles have not yet been observed placing their
masses at a higher energy scale. In the high energy proton collisions at the Large Hadron Collider
(LHC) at CERN it is possible to test the Standard Model at unprecedented energy scales and look
for new, heavy particles, e.g supersymmetric particles. The ATLAS detector is designed to study
the proton collisions in detail. This thesis presents searches for squarks and gluinos – the
supersymmetric partners of the Standard Model quarks and gluons. The searches are performed at
two collision energies, √s = 8 TeV and 13 TeV, in events with jets and missing transverse
momentum with data collected by the ATLAS experiment. No excesses were observed and the
results of the analyses are presented as limits on various supersymmetric models. The thesis also
includes a study of the sensitivity of searches for squarks and gluinos with the dataset of an
upgrade of the LHC to the HL-LHC at √s = 14 TeV.
“Searches for Coloured Supersymmetry with ATLAS at √s = 8 TeV, 13 TeV, and 14 TeV” (pdf)
De promotie vindt plaats op woensdag 30 november, om 10.00 in de Agnietenkapel, Oudezijds Voorburgwal 229 – 231, Amsterdam.
Promotor: prof. dr. ir. P.J. de Jong
Copromotor: dr. M. Vranjes Milosavljevic
contact: Ingrid Deigaard