Oxford Exotics Group

13 TeV dijet event with an invariant mass of 8.8 TeV, the highest-pT jet has a pT of 810 GeV, and the subleading jet has a pT of 750 GeV.

The Standard Model of particle physics may be one of the most successful physical theories of all time, but it is also startlingly incomplete: even the Higgs boson at 125 GeV raises many profound questions about the nature of electroweak symmetry breaking, the hierarchy of forces, and the origin and survival of the universe. There are strong grounds for expecting to observe new, exotic physics phenomena at the TeV scale, and yet, after several years of successful data-taking at the record-breaking high energies of the LHC, this new physics remains as elusive as ever.

The Oxford ATLAS Exotics group pushes the frontier of new physics searches at the mass/energy frontier, especially using novel techniques to reconstruct and characterize highly energetic b jets and boosted gauge bosons (e.g. Higgs) in order to look for dark matter, heavy resonances, vector-like quarks, and miniature and Planckian black holes.

We work with theorists to understand these exotic objects and how they could manifest themselves in the ATLAS detector, but we also emphasize model-independent, signature-based searches to maximize discovery potential.
Preliminary low mass di-bjet search showing indications of an exess at the location expected for a Higgs boson, ATLAS-CONF-2018-052

We have significant leading roles within ATLAS and welcome new students and postdocs to our effort. We are experts in jet performance studies, calibration and the development of algorithms for the identification of boosted X->bb final states. We work on the development of advanced b-tagging algorithms for highly energetic bjet systems.

Projects for New Students
Search for new resonances and dark matter mediator particles and thresholds effects in ISR + di-bjet final states
Search for heavy particles and effects in highly energetic (boosted) and resolved di-Higgs final states
Search for Higgs bosons in association with missing energy (mono-Higgs)

Current Students

Name Topic
I. Veliscek Limits on SM production of diHiggs pairs in combined decay modes at ATLAS
J. Grundy Search for new physics in resolved and intermediate 2H to 4b final states from Vector Boson Fusion (VBF) production.
M. Stankaityte Search for new physics and the H(125) in di-b-jet final states in association with initial state radiation
S. Paredes Saenz Search for new physics in boosted 2H to 4b final states with the Run 2 data
B. Stanislaus Searching for Beyond the Standard Model Resonances in the HH->4b Final State Using the ATLAS Detector

Former Students

Name Topic Year
N. Nurfikri Bin Norjoharuddeen Search for new physics in boosted final states and jet mass calibration 2018
L. Beresford Search for new physics in di-jet and ISR + dijet final states 2017
K. Behr Electron Trigger + Searches in top final states 2015
S. Gupta Jet punch-through of TeV jets + Searches in multi-jet final states 2015
L. Kogan Fat-jet calibration + Searches in boosted top final states 2014
K. Pachal Databases + Searches in di-jet final states 2014
R. Buckingham Search for New Physics in dijet final states 2013
S. Livermoore Search for New Physics in boosted ttbar final states 2013
N. Brett Micro Black Holes at the LHC and An X-ray Survey of the ATLAS SCT 2007

J. Frost, T. Huffman, C. Issever