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Department of Physics

Ketino Kaadze

Ketino KaadzeAssistant Professor
43B Cardwell Hall
(785) 532-1608
keti@phys.ksu.edu

Ph.D. Kansas State University, 2010
M.S. Tbilisi State University, Georgia, 2005
B.S. Tbilisi State University, Georgia, 2003

Research Area

Experimental High Energy Particle Physics

It is a very exciting time to work in High Energy Physics. The Large Hadron Collider (LHC) has performed remarkably well. Besides delivering many important measurements of the standard model (SM) physics and a wide spectrum of searches for new phenomena beyond the SM, a new boson, so-called Higgs boson, with the mass of about 125 GeV was discovered. Even if the new particle is confirmed to be the SM Higgs boson, new physics is still required to answer many fundamental questions such as: what is a solution to the hierarchy problem; what mechanism stabilizes the mass of the Higgs boson with respect to quantum corrections; what is an origin of dark matter, and many others.

I am working on the CMS experiment at the LHC. Using the proton-proton collisions at the highest to date center-of-mass energy of 8 TeV I study the properties of the Higgs boson and search for new physics. In the past two years, I searched for the decay of the Higgs boson to a pair of tau leptons. I also searched for a presence of additional heavier or lighter Higgs bosons or other scalar particles, such as leptoquarks and supersymmetric partners of top quarks, predicted by various extensions of the SM. Currently, I lead a CMS working group that searches for new physics in collision events containing leptons and jets. Although, there is no evidence for new phenomena so far, almost doubling the energy reach at the LHC in 2015 will open completely new territories to explore and offer a unique opportunity for a major discovery.

Research Support

  • Department of Energy
  • Kansas State University

Recent Selected Publications 

CMS Collaboration, "Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions," Journal of High Energy Physics 10 (2014) 160, CERN-PH-EP-2014-192, arXiv:1044242. [link]

CMS Collaboration, "Search for pair production of third-generation scalar leptoquarks and top squarks in proton-proton collisions at sqrt(s) = 8 TeV," Physics Letters B 739 (2014) 229, CERN-PH-EP-2014-190, arXiv: 1408.0806. [link]

CMS Collaboration, "Evidence for the direct decay of the 125 GeV Higgs boson to fermions," Nature Physics 10, 557-560 (2014), DOI: 10.1038/NPHYS3005. [link]

CMS Collaboration, "Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons," Journal of High Energy Physics, 05 (2014) 104, arXiv: 1401.5041. [link]

CMS Collaboration, "Search for pair production of third-generation Leptoquarks and top squarks," Phys. Rev. Lett. 110, 081801 (2013), arXiv: 1210.5629v1.[link]