How to reach me:

• e-mail: lance@slac.DUMMY_NAMEstanford.edu     (remove DUMMY_NAME)
• telephone:  (650) 926-2627
• office: SLAC, Research Office Building, ROB (Building 48), room 229

Research Interests:

• Theoretical elementary particle physics, including:

• Higher-order calculations in perturbative QCD and in N=4 super-Yang-Mills theory
  
• Standard Model backgrounds to searches for new physics
• Higgs boson physics
• Perturbative relations between gauge theory and gravity
• Aspects of the early universe

Public Lecture:

• Journey to the Heart of Matter (Dublin) [pdf]
  

Podcast Intervew:

• Scattering Amplitudes, LHC and LIGO
  

Colloquia:

• The DNA of Particle Scattering [pdf]
  
• Scattering Amplitudes from LHC to LIGO and Beyond [pdf]
  
• Amplitudes and QCD for the LHC [pdf]
  
• Bootstrapping Amplitudes in Planar N=4 SYM Theory [pdf]
  
• Seven Decades of Particle Scattering: from Feynman Diagrams to the LHC [pdf]
  
  

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Other Talks:

• A New Duality for Scattering Amplitudes [pdf]

• Particle Scattering and Number Theory [pdf]

• Hexagon Scattering Amplitude at the Origin [pdf]

• N=4 meets N=8 at 2 Loops and 5 Legs [pdf]

• The Energy Energy Correlator at Small Angles in QCD [pdf]

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School Lectures:

• Higher Order QCD (2 lectures at 2006 SLAC Summer Institute)   Lecture 1 [ppt]    Lecture 2 [ppt]
  

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Computer Programs and Ancillary Files:

•   The program Vrap for computing Drell-Yan (W,Z) rapidity distributions at hadron colliders, at NNLO in QCD

•   Results for six-gluon scattering in planar N=4 super-Yang-Mills theory at the multi-loop level:
• An "origin story" to arbitrarily many loops
• through 6.5 loops using ideas from cosmic Galois theory
• through five loops using the Steinmann constraint
• the four-loop remainder function
• the three-loop ratio function
• the four-loop ratio function

  Seven-gluon scattering:

Full functions through 4 loops

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Last courses taught:

Physics 152A/252A, Winter 2009:       Introduction to Particle Physics (I)

Physics 332, Spring 2008:       Quantum Field Theory (third term)

Physics 152/252, Spring 2003:       Introduction to Particle Physics

Physics 452, Special Topics in Particle Physics, Spring 1997:      Lattice Gauge Theory

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Papers on Higgs boson physics
 

• Resonance-continuum interference in the di-photon Higgs signal at the LHC
• Isolating a light Higgs boson from the di-photon background at the LHC
•  NLO Higgs boson rapidity distributions at hadron colliders

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Papers on multi-jet calculations in perturbative QCD and related topics

•  Supersymmetric regularization, two-loop QCD amplitudes and coupling shifts
•  Two-loop helicity amplitudes for gluon-gluon scattering in QCD and supersymmetric Yang-Mills theory
•  Two-loop amplitudes for gluon fusion into two photons
•  Two-loop correction to Bhabha scattering
•  One-loop amplitudes for e+e- -> 4 partons

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Papers on quantum gravity and its relationship to gauge theory

• Multi-leg one-loop gravity amplitudes from gauge theory
• One-loop n-point helicity amplitudes in (self-dual) gravity
• On the relationship between Yang-Mills theory and gravity and its implication for ultraviolet divergences

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 Some conference write-ups:

•  NLO Higgs boson rapidity distributions at hadron colliders
•  Perturbative relationships between QCD and gravity and some implications

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More global listing of recent work

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Curriculum vita, etc.

[CV ]

[ List of publications ]

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Hobbies include:
 
 

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SLAC