Amplitude Level Evolution in QCD

  • Robert Mears

Student thesis: Master of Science by Research


Predictions for non-global observables necessitate the resummation procedure to in-clude real emissions as well as virtuals. The FKS algorithm is a colour basis in-dependent method of recursively inserting real emissions whilst interweaving virtualcorrections up to all orders. The algorithm has so far not be shown to be collinearsafe to all orders, however, and must be regularised using a collinear cut-off, lambda. Iuse the FKS algorithm in the Colour flow basis to calculate the gaps-between-jetsobservable at first, second and third order. The first order calculation is shown to beanalytically lambda independent. The second and third order calculations are numerically shown to exhibit lambda independence for lambda
Date of Award1 Aug 2020
Original languageEnglish
Awarding Institution
  • The University of Manchester
SupervisorJeffrey Forshaw (Supervisor) & Fedor Bezrukov (Supervisor)

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