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N-jettiness Subtractions

Frank Tackmann (DESY)

Tuesday, 31 January 2017 at 13:30, in HIT E 41.1 - ETH Hönggerberg


I will discuss in some detail the construction of N-jettiness subtractions for generic NNLO calculations, including the relevant factorization theorem and the necessary perturbative ingredients in the context of soft-collinear effective theory. I will also discuss recent advances in calculating the relevant subleading power corrections, which significantly improve the numerical accuracy and stability of the subtractions and the optimal choice of the N-jettiness observable that avoids limitations from power corrections that grow exponentially with rapidity.