Ian M. Lewis, PhD

Assistant Professor, Theoretical High Energy Physics
Primary office:
Malott Hall
Room 6050J
1082 Malott,1251 Wescoe Hall Dr.

Assistant Professor, University of Kansas, January 2016 - Present

Associate Member, Pittsburgh Particle physics Astrophysics and Cosmology Center (PITT PACC), University of Pittsburgh, 2016-Present

Research Associate, SLAC National Accelerator Laboratory, September 2014-December 2015

Research Associate, Brookhaven National Laboratory, September 2011-September 2014


Ph.D., Physics, University of Wisconsin-Madison

B.S., Mathematics, with Honors and Highest Distinction, University of Kansas

B.S., Physics, with Honors and Highest Distinction, University of Kansas


With the discovery of the Higgs boson, the Standard Model of Particle Physics is complete. This has been a highly successful theory, agreeing with all collider data so far collected. However, there are many unexplained phenomena: the nature of dark matter and dark energy, the origin of the matter/anti-matter asymmetry of the Universe, the origin of neutrino masses, etc. The Large Hadron Collider (LHC) in Geneva, Switzerland, is quickly accumulating data at the energy frontier and may yet discover new physics that sheds light on some of these issues. Theoretical high energy physics is vital to giving the foundation with which to understand and interpret the LHC data.

I am actively pursuing research as it pertains to searches for new physics at the LHC. To accomplish this, I am engaged in three major prongs of research: proposing novel methods to search for new physics, understanding new physics effects in precision measurements of the Standard Model, and performing precision calculations of Standard Model processes. The novel search methods help guarantee that we do not miss any new physics discoveries in rare or unusual channels. By understanding how new physics can appear in precision measurements of Standard Model processes, we help determine if there are any new effects lurking in the structure of the Standard Model. Finally, precision predictions of Standard Model processes are needed to establish if an anomaly is truly new physics or unknown Standard Model effects.

This is an exciting time to be particle physicist. There are many experiments searching for new, beyond the Standard Model physics in a variety of ways. At the energy frontier, the LHC is furthering our understanding of the fundamental physics of the Universe. Theoretical particle physics research allows us to take full advantage of this unprecedented opportunity to discover new, beyond the Standard Model physics.

Research Interests

  • High energy physics
  • Particle Physics
  • Theoretical Physics
  • High Energy Theory
  • Theoretical High Energy Physics
  • Theoretical Particle Physics
  • Particle Physics Theory

Selected Publications

Lewis, I. M., & Sullivan, M. (2017). Benchmarks for Double Higgs Production in the Singlet-Extended Standard Model at the LHC. Physical Review D, 96, 035037. DOI:10.1103/PhysRevD.96.035037

Chen, C., Kozaczuk, J., & Lewis, I. M (2017). Non-resonant Collider Signatures of a Singlet-Driven Electroweak Phase Transition . JHEP,(1708), 096. DOI:10.1007/JHEP08(2017)096

Dawson, S., & Lewis, I. M. (2017). Singlet Model Interference Effects with High Scale UV Physics. Phys. Rev. D, 92, 015004. DOI:10.1103/PhysRevD.95.015004

Dawson, S., & Lewis, I. M. (2015). NLO corrections to double Higgs boson production in the Higgs singlet model. Phys. Rev. D, 92, 094023. DOI:10.1103/PhysRevD.92.094023

Chen, C., Dawson, S., & Lewis, I. M. (2015). Exploring Resonant Di-Higgs Production in the Higgs Singlet Model. Phy. Rev. D, 91, 035015. DOI:10.1103/PhysRevD.91.035015

Dawson, S., Lewis, I. M., & Zeng, M. (2014). Effective Field Theory for Higgs Plus Jet Production. Phys. Rev. D, 90, 093007. DOI:10.1103/PhysRevD.90.093007

Davoudiasl, H., & Lewis, I. M. (2014). Right-Handed Neutrinos as the Origin of the Electroweak Scale. Phys. Rev. D, 90, 033003. DOI:10.1103/PhysRevD.90.033003

Davoudiasl, H., Lee, H., Lewis, I. M., & Marciano, W. J. (2013). Higgs Decays as a Window into the Dark Sector. Phys. Rev. D, 88, 015022. DOI:10.1103/PhysRevD.88.015022

Han, T., Lewis, I. M., Ruiz, R., & Si, Z. (2013). Lepton Number Violation and W′ Chiral Couplings at the LHC. Phys. Rev. D, 87, 035011. DOI:10.1103/PhysRevD.87.035011

Dawson, S., Furlan, E., & Lewis, I. M. (2013). Unravelling an Extended Quark Sector Through Multiple Higgs Production? Phys. Rev. D, 87, 014007. DOI:10.1103/PhysRevD.87.014007

Han, T., Lewis, I. M., & Liu, Z. (2010). Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology. JHEP, 2010(12), 085. DOI:10.1007/JHEP12(2010)085

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