High Energy Physics Seminar: Prof. Christopher Lee, LANL  Add To Calendar

  • Date(s): Friday, 4/21 1:30 PM to Friday, 4/21 2:30 PM
  • Speaker: Dr. Christopher Lee
  • Host: Ho-Ung Yee
  • Campus Address: 2214 SES (Science and Engineering South)

Title: An Effective Theory Approach to Small-R Jets

Abstract: Logarithms of jet radii R become large in jet cross sections in QCD when R is small. In exclusive jet cross sections with jets of energy Q and a veto on additional jets of energy E, we find that logs of R come from ratios of not one but two hierarchies of scales, QR over Q and ER over E. We construct an effective field theory with modes for both hard-collinear and soft-collinear scales QR and ER, allowing the factorization of dependences on all scales, and resummation of logarithms of R to arbitrarily high accuracy in resummed perturbation theory.

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