Mark J. Oreglia

Ph.D., Stanford University, 1981.
Professor, Dept. of Physics, Enrico Fermi Institute, and the College.
Experimental physics, particle physics.

I am a member of the ATLAS experiment at CERN, and this will be the main focus of my work for the foreseeable future.  My main interest is the search for new physics, particularly alternative models to the minimal Standard Model or minimal supersymmetric SM.  This continues my work on searches for SM and exotic Higgs bosons at LEP.

I am also leading efforts to upgrade the ATLAS detector’s hadronic calorimeter to meet the needs and challenges of the High-Luminosity LHC which will have much higher collision rates than the current LHC. My group is prototyping radiation-hard electronics that can record and transmit data at very high bandwidths.  As of 2018, we have been conducting radiation tests of prototypes and demonstrating their functionality in particle beams. I am currently the US-ATLAS level-2 manager for the hadron calorimeter upgrade, and the International ATLAS manager for hadron calorimeter upgrade resources.

In addition to my ATLAS activities, I was formerly involved in planning and detector R&D for the International Linear Collider (see the GDE site). I was co-spokesperson of the American Linear Collider Physics Group and a member of the CALICE R&D collaboration as well as editor of the SiD detector concept Technical Design Report.  Prior to my ILC activity, I enjoyed exploring methods to construct a Higgs factory by colliding muons.

Here is a list of a few publications I am proud of:


  • ATLAS, G. Aad et al., “Combination of searches for WW, WZ, and ZZ resonances in pp collisions at 3s = 8 TeV with the ATLAS detector”, Phys. Lett. B755, 285 (2016), 1512.05099.
  • ATLAS, G. Aad et al., “Search for new phenomena in dijet mass and angular distributions from pp collisions at 3s = 13TeV with the ATLAS detector”, Phys. Lett. B754, 302 (2016), 1512.01530.
  • ATLAS, G. Aad et al., “Measurement of inclusive jet and dijet production in pp collisions at 3s = 7 TeV using the ATLAS detector”, Phys. Rev. D86, 014022 (2012), 1112.6297.
  • S. Dawson and M. Oreglia, “Physics opportunities with a TeV linear collider,” Ann. Rev. Nuci. Part. Sci. 2004 54:269 [arXiv:hep-ph/0403015].
  • M. J. Oreglia et al., “Design Considerations for an International Linear Collider", lc/, (2003).
  • The LEP Working Group for Higgs Boson Searches, “Search for Neutral MSSM Higgs Bosons at LEP”, Eur. Phys. J. C 47 (2006) [hep-ex/0602042].
  • G. Abbiendi et al., “Flavor Independent H0A0 Search and two Higgs Doublet Model Interpretation of Neutral Higgs Boson Searches at LEP”, Eur.Phys.J.C40:317-332,2005. [HEP-EX 0408097]
  • G. Abbiendi et al. [OPAL Collaboration], \Search for associated production of massive states decaying into two photons in e+ e- annihilations at s**(1/2) = 88-GeV - 209-GeV," Phys. Lett. B 544 (2002) 44 [arXiv:hep-ex/0207027].
  • G. Abbiendi et al. [OPAL Collaboration],Search for the Standard Model Higgs Boson in e+e- Collisions at SQRT(s) = 192-209 GeV. Phys. Lett. B499, 38, 2001.
  • A Feasibility Study of a Neutrino Source Based on a Muon Storage Ring, N. Holtkamp et al. FERMILAB-PUB-00-108-E.
  • Beam Test of Gammy-ray Large Area Space Telescope Components, W. Atwood et al. Nucl. Instrm. Meth. A446, 444, 2000.

updated 5/2018