Sung-Won Lee, Ph.D.

Professor and Chair
Department of Physics and Astronomy

Email: Sungwon.Lee@ttu.edu

Phone: (806) 834-8188

Office: 117 Science Building

Ph.D. Physics, University of Glasgow, UK (2000)

M.S. Physics, Kyungpook National University, Korea (1995)

B.S. Physics, Daegu University, Korea (1993)

Research Interests

In late 2009, the new particle accelerator, Large Hadron Collider (LHC) at CERN (European Laboratory for Particle Physics) and two large general-purpose particle physics detectors, ATLAS and CMS started operating at the world highest particle energy, allowing the study of quantum universe in the Tera-scale. The ultimate goal of my research at LHC-CMS experiment is to discover the missing fundamental building blocks of our physical world and to answer some of the most profound questions on the structure of matter and the evolution of the early Universe: (1) What is the origin of mass? and (2) What new particles lie beyond the Standard Model? My own approach to answering these questions is a synthesis of two main lines of research: Improving the detector sensitivity to the final-state jet through a generic calorimeter R&D and using it in the detailed studies of the Standard Model Higgs boson, precision measurements of Standard Model physics, and searches for physics beyond the Standard Model at the energy frontier. [Link]

Selected Publications

Search for Dijet Resonances

• CMS Collaboration, Search for narrow and broad dijet resonances in proton-proton collisions at √s =13 TeV and constraints on dark matter mediators and other new particles, JHEP, 08 (2018) 130
• CMS Collaboration, Search for dijet resonances in proton-proton collisions at √s = 13 TeV and constraints on dark matter and other models, Phys. Lett. B 769 (2017) 520
• CMS Collaboration, Search for narrow resonances decaying to dijets in proton-proton collisions at √s = 13 TeV, Phys. Rev. Lett, 116 (2016) 071801
• CMS Collaboration, Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at √s = 8 TeV, Phys. Rev. D 91 (2015) 052009
• CMS Collaboration, Search for narrow resonances using the dijet mass spectrum in pp collisions at √s = 8 TeV, Phys. Rev. D 87 (2013) 114015
• CMS Collaboration, Search for narrow resonances and quantum black holes in inclusive and b-tagged dijet mass spectra from pp collisions at √s = 7 TeV, JHEP 01 (2013) 013
• CMS Collaboration, Search for Resonances in the Dijet Mass Spectrum from 7 TeV pp Collisions at CMS, Phys. Lett. B 704 (2011) 123
•  CMS Collaboration, Search for Dijet Resonances in 7 TeV pp Collisions at CMS, Phys. Rev. Lett. 105 (2010) 211801

Search for Diboson Resonances

• CMS Collaboration, Search for a heavy resonance decaying to a pair of vector bosons in the lepton plus merged jet final state at √s=13 TeV, JHEP, 05 (2018) 088
• CMS Collaboration, Combination of searches for heavy resonances decaying to WW, WZ, ZZ, WH, and ZH boson pairs in proton-proton collisions at √s = 8 and 13 TeV, Phys. Lett. B 774 (2017) 533
• CMS Collaboration, Search for massive resonances decaying into WW, WZ or ZZ bosons in proton-proton collisions at √s = 13 TeV, JHEP 03 (2017) 162

Search for Mono-X

• CDF Collaboration, Search for new physics in final states with an energetic jet or a hadronically decaying W or Z boson and transverse momentum imbalance at √s =13 TeV, Phys. Rev. D., 97(9), 092005
• CMS Collaboration, Search for dark matter produced with an energetic jet or a hadronically decaying W or Z boson at √s = 13 TeV, arXiv:1703.01651, submitted to JHEP (2017)
• CMS Collaboration, Search for Dark Matter and Large Extra Dimensions in pp Collisions Yielding a Photon and Missing Transverse Energy, Phys. Rev. Lett. 108 (2012) 261803

Other Searches

• CDF Collaboration, Search for Pair Production of Scalar Top Quarks Decaying to a Tau Lepton and a b-Quark in ppbar Collisions at √s = 1.96 TeV, Phys. Rev. Lett. 101 (2008) 071802
• CDF Collaboration, Search for Third Generation Vector Leptoquarks in ppbar Collisions at √s = 1.96 TeV, Phys. Rev. D 77 (2008) 091105(R)
• V. Buescher, R. Culbertson, J. Conway, Y. Gershtein, J-F. Grivaz, B. Heinemann, D.H. Kim, M.S. Kim, S. Lammel, G. Landsberg, S.W. Lee, S. Mrenna, D. Toback, and S.M. Wang, Combination of CDF and D0 Limits on a Gauge Mediated SUSY Model Using Diphoton and Missing Transverse Energy Channel, arXiv:hep-ex/0504004; FERMILAB-PUB-05-052 (2005)
• CDF Collaboration, Search for Anomalous Production of Diphoton Events with Missing Transverse Energy at CDF and Limits on Gauge-Mediated Supersymmetry-Breaking Models, Phys. Rev. D 71 (2005) 031104
• CDF Collaboration, Search For Pair Production of Scalar Top Quarks in R-parity Violating Decay Modes in ppbar Collisions at √s = 1.8 TeV, Phys. Rev. Lett. 92 (2004) 051803
• Search for Gluinos and Squarks Using Like Sign Dileptons in \ppbar\ Collisions at √s = 1.8 TeV, Phys. Rev. Lett. 87  (2001) 251803

Standard Model Higgs Boson Searches

• CMS Collaboration, Search for a Higgs Boson in the Mass Range from 145 to 1000 GeV Decaying to a Pair of W or Z Bosons, JHEP 10 (2015) 14
• CMS Collaboration, Search for a standard-model-like Higgs boson with a mass in the range 145 to 1000 GeV at the LHC, Eur. Phys. J. C 73 (2013) 2469

Electroweak Multiboson Measurement

Electroweak Forward-Backward Asymmetry

QCD Z+Jet Measurement

• CMS Collaboration, Measurements of the differential production cross sections for a Z boson in association with jets in pp collisions at √s = 8 TeV, JHEP 04 (2017) 022
• CMS Collaboration, Rapidity distributions in exclusive Z + jet and photon + jet events in pp collisions at √s = 7 TeV, Phys. Rev. D 88 (2013) 112009
• CMS Collaboration, Jet Production Rates in Association with W and Z Bosons in pp Collisions at √s = 7 TeV, JHEP 01 (2012) 010

QCD Jet Measurement

• CMS Collaboration, Measurement and QCD analysis of double-differential inclusive jet cross-sections in pp collisions at √s = 8 TeV and ratios to 2.76 and 7 TeV, JHEP 1703 (2017) 156
• CMS Collaboration, Measurement of the inclusive jet cross section in pp collisions at √s = 2.76 TeV, Eur. Phys. J. C 76 (2016) 265

QCD Photon Measurement

• ZEUS Collaboration, Study of the Effective Transverse Momentum of Partons in the Proton Using Prompt Photons in Photoproduction at HERA, Phys. Lett. B 511 (2001) 19
• ZEUS Collaboration, Measurement of Inclusive Prompt Photon Photoproduction at HERA, Phys. Lett. B 472 (2000) 175

Detector & Physics Object

• CMS Collaboration, Missing Transverse Energy Performance of the CMS Detector, J. Instrum. 6 (2011) P09001
• CMS HCAL/ECAL Collaborations, The CMS Barrel Calorimeter Response to Particle Beams from 2 to 350 GeV/c, Eur. Phys. J. C 60 (2009) 359
• M. Goncharov, T. Kamon, V. Khotilovich, V. Krutelyov, S.W. Lee, D. Toback, P. Wagner, H. Frisch, H. Sanders, M. Cordelli, F. Happacher, S. Miscetti, and R. Wagner, The Timing System for the CDF Electromagnetic Calorimeters, Nucl. Instrum. Meth. A 565 (2006) 543
• S.W. Lee, K.W. Jang, and D.H. Kim, Monte Carlo Investigation of Scintillator-based Calorimeters, J. Korean Applied Physics, Vol.9, Number 4 (1997)