JHEP 11 (2014) 021
Studies stop pair production at a 100 TeV collider, introducing a muon-in-jet top-tagging strategy for the highly boosted regime and projecting discovery reach up to 6.5 TeV stop masses with 3000 fb^-1.
JHEP 04 (2014) 117
Projects the discovery reach and exclusion limits for supersymmetric simplified models at the 14 TeV LHC and future 33 and 100 TeV proton colliders, finding that a 100 TeV machine can discover gluinos below 11 TeV.
Phys. Rev. D 88 (2013) 093006
Evaluates the potential of a same-sign dilepton plus two b-jet search for tth production, providing direct access to the top Yukawa coupling without dependence on loop-level couplings or Higgs width uncertainties.
JHEP 08 (2013) 136
Introduces a subjet-counting search technique for high-multiplicity BSM signals at the LHC, using jet substructure to count subjets within large-radius jets and demonstrating improved sensitivity across eight benchmark signals with reduced reliance on missing energy.
Phys. Rev. D 85 (2012) 055029
Introduces a new class of BSM searches that recluster events into large-radius fat jets and require multiple massive jets, improving sensitivity to high-multiplicity signals including R-parity violating gluino decays by 20-50% in mass reach.
unpublished
Studies the possibility of light gluinos with R-parity violating decays at the Tevatron, exploring reconstruction techniques for these challenging multijet final states.
JHEP 01 (2012) 074
Develops a comprehensive set of simplified models for LHC final states with top and bottom quarks, optimizing search strategies for pair-produced color octets and triplets, and providing benchmarks that ensure optimal coverage of heavy flavor new physics.
unpublished
Shows that early LHC evidence for a Higgs boson at 142-147 GeV points to PeV-scale split supersymmetry, with moderate-lifetime gluinos (25 microns to 10 years decay length) and an almost purely bino LSP at 70 GeV as discovery signatures.
J. Phys. G 39 (2012) 105005
A systematic catalog of simplified models for new-physics searches at the LHC, defining minimal effective Lagrangians with few new particles whose masses and cross-sections map directly to observable quantities. Output of the SLAC workshop on Topologies for Early LHC Searches.
Phys. Lett. B 702 (2011) 64-68
Reinterprets the first ATLAS supersymmetry search with 70/nb of data, showing that gluino masses below 205 GeV are disfavored regardless of LSP mass, already surpassing the Tevatron reach for compressed spectra.
Adv. High Energy Phys. 2011, 859762
Computes model-independent limits on new Abelian vector bosons kinetically mixed with Standard Model hypercharge, using data from e+e- experiments across the 1 GeV to 1 TeV mass range. Bounds the kinetic mixing parameter to epsilon < 0.03 for most masses studied.
JHEP 12 (2010) 030
Develops search strategies for new physics at the LHC that improve sensitivity by combining multiple signal regions and optimizing for broad coverage across simplified model mass planes.
Phys. Rev. D 79 (2009) 115006
Shows that a Higgs boson decaying to light pseudoscalars can be discovered via the subdominant channel where one pseudoscalar decays to muon pairs, enabling coverage at the Tevatron and early LHC even when the pseudoscalar mass is below 10 GeV.
Phys. Rev. D 79 (2009) 015005
Proposes a model-agnostic approach to jets + missing energy searches at the LHC by defining kinematic bins and publishing differential cross-section limits that can be reinterpreted for any BSM model producing the same final state.
Phys. Lett. B 666 (2008) 34-37
Shows how to search the complete kinematic parameter space for pair-produced color octets decaying to two jets plus missing energy at the Tevatron, demonstrating that CMSSM-motivated cuts cause existing searches to miss discoverable spectra.
Studies extensions of the Standard Model where the Higgs decays via a cascade to four tau leptons and shows that multi-lepton excesses could be visible at the Tevatron with 6 fb^-1 for a 110 GeV Higgs.
Phys. Rev. D 76 (2007) 055007
Shows that long-lived gluinos in split supersymmetry form R-hadrons that stop in detector material, with 10^6 stopping per year in LHC detectors for a 300 GeV gluino. The subsequent delayed decays produce distinctive calorimeter deposits with no tracker or muon chamber activity.
Phys. Rev. D 69 (2004) 115008
Studies precision electroweak constraints on the SU(6)/Sp(6) Little Higgs model, identifying a near-oblique limit and finding viable parameter space with top partners as light as 1 TeV and W' as light as 1.8 TeV.
JHEP 0208:021 (2002)
Introduces the minimal theory-space construction for a Little Higgs model, where the Higgs is a pseudo-Goldstone boson protected from quadratic divergences by collective symmetry breaking. Predicts new TeV-scale partners for the top quark, gauge bosons, and scalars, with the entire Higgs potential generated by the top Yukawa coupling.
JHEP 0208:020 (2002)
Works out the collider phenomenology and dark matter implications of the Little Higgs mechanism, predicting light Higgs doublets accompanied by new weak triplet and singlet scalars, heavy TeV-scale particles with distinctive decay signatures, and a new WIMP dark matter candidate from a discrete geometric symmetry.