John Stupak

Assistant Professor

stupak

Education

B.S. 2007 Fairfield University

Ph.D. 2012 Stony Brook University

 

Contact

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Ph: (405) 325-7088

Office: 331 Nielsen Hall

 

Research Description

My research interests are focused on the search for new physics with the ATLAS detector at the Large Hadron Collider (LHC). The Standard Model (SM) of particle physics correctly describes all experimental observations to date, but the LHC allows us to probe nature at a previously-untested energy scale. The first glimpse of beyond the Standard Model (BSM) physics could be just around the corner.

In particular, I am interested in the resolution to the "hierarchy problem." In the SM, Quantum corrections to the Higgs boson mass should be large, resulting in a mass many orders of magnitude larger than the observed value. One of the main deficiencies of the SM is that it offers no explanation to this puzzle.

I use the recently-discovered Higgs boson as a probe of new physics, in the hopes of shedding light on the hierarchy problem. The rest of the SM has been studied extensively at the LHC and earlier colliders, but the Higgs boson has yet to undergo comprehensive scrutiny, making it a natural place to look for BSM physics. I have studied the interactions of the Higgs boson with W and Z bosons, in an effort to reveal the presence of non-SM interactions. I have searched for exotic decays of the Higgs boson, and searched for an electrically-charged counterpart to the Higgs boson. In the near future, I plan to also search for new particles that could decay to a Higgs boson.

I am also involved in preparations for an upgrade of the innermost ATLAS sub-detector, the pixel detector. The pixel detector allows reconstruction of collision vertices and the identification of bottom quarks, the most common Higgs boson decay product.

Selected Publications

"Combined search for anomalous pseudoscalar HVV couplings in VH(H→bb) production and H→VV decay," CMS Collaboration, Phys. Lett. B759 (2016) 672.

"Search for a charged Higgs boson in pp collisions at sqrt(s) = 8 TeV," CMS Collaboration, JHEP 11 (2015) 018.

"Search for W' to tb decays in the lepton + jets final state in pp collisions at sqrt(s) = 8 TeV," CMS Collaboration, JHEP 05 (2014) 108.

"Search for Second Generation Scalar Leptoquarks in pp Collisions at sqrt(s) = 7 TeV with the ATLAS Detector," ATLAS Collaboration, Eur. Phys. J. C72 (2012) 2151.

"Search for First Generation Scalar Leptoquarks in pp Collisions at sqrt(s) = 7 TeV with the ATLAS Detector," ATLAS Collaboration, Phys. Lett. B709 (2012) 158.

Research Group

Giuliano Gustavino, Post Doc