Systematic Scale-Setting for pQCD to All Orders: The Principle of Maximum Conformality

Particle Physics Theory seminar

Systematic Scale-Setting for pQCD to All Orders: The Principle of Maximum Conformality

  • Event time: 2:00pm
  • Event date: 14th September 2016
  • Speaker: Stanley J. Brodsky (Stanford University)
  • Location: Higgs Centre Seminar Room,

Event details

A primary problem for perturbative QCD analyses is how to set the renormalization scale of the QCD running coupling in order to achieve maximally precise fixed-order predictions for physical observables. The Principle of Maximum Conformality (PMC) eliminates the ambiguities associated with the conventional renormalization scale-setting procedure, giving predictions which are independent of the choice of renormalization scheme. The scales of the QCD couplings and the effective number of quark flavors are set order by order in the pQCD series.  The application of the PMC systematically eliminates a major theoretical uncertainty for pQCD predictions, thus increasing the sensitivity of the colliders to possible new physics beyond the Standard Model.

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..

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