Ph.D. Southern Methodist University, 2002
Experimental High Energy Physics
- Higgs boson physics
- Search for new phenomena
I study physics at the 10-18 m scale of the quantum universe using data collected by the CMS detector at the Large Hadron Collider (LHC), located near Geneva, Switzerland. All our knowledge of fundamental particles and their interactions, summarized in the theory that we refer to as standard model, unfortunately does not provide answers to a number of outstanding puzzles in physics, such as: what is the origin of dark matter, why do we have three generations of matter, why do particles have particular masses, and why are some of them so light, while some are heavier than the atoms. Most importantly, what makes Higgs boson so light, while quantum corrections predict its mass to diverge to infinity. A number of "extensions" of the standard model exist to breach from its low-energy approximation roots toward a more grand theory that would describe our Universe at the microscopic level. The newly discovered Higgs boson plays a very important role in finding out which of those extensions might be the right ones. Thus, my research program focuses on studying the newly discovered Higgs boson and using it as a tool to search for new physics in LHC collision data.
My research group is leading the efforts to study the properties of the Higgs boson couplings to heavy gauge bosons, and aim to extend the study to measure Higgs boson couplings to fermions.
My group is also active in CMS hardware operations and upgrade efforts. I am currently co-leading the CMS HCAL Calibration group, charged to ensure optimal measurement of hadron showers with the CMS detector. We are active in the Phase I HCAL upgrade, and have begun working toward a novel ultra-fast timing detector for the Phase II upgrade, aiming to measure the timing information for particles with 30 ps resolution. This detector will be essential to unlocking the true potential of the CMS detector in the high-luminosity regime of the upgraded LHC complex in the next decade.
- Department of Energy
Recent Selected Publications
- "Observation of the Higgs boson decay to a pair of tau leptons," submitted to Phys. Lett. B.
- "Search for high-mass Zγ resonances in proton–proton collisions at √s=8 and 13 TeV using jet substructure techniques," Phys. Lett. B 772 (2017) 363-387.
- "Measurements of the pp → Wγγ and pp → Zγγ cross sections and limits on anomalous quartic gauge couplings at √s = 8 TeV," J. High Energy Phys. 1710 (2017) 072.
- "Search for excited leptons in proton-proton collisions at √s=8 TeV," J. High Energy Phys. 03 (2016) 125.
- "Search for new phenomena in monophoton final states in proton-proton collisions at √s = 8 TeV," Phys. Lett. B 755 (2016) 102-104.