arXiv 1801.048772018-01-15hep-ph

Automated Calculation of Dijet Soft Functions in the Presence of Jet Clustering Effects

Guido Bell, Rudi Rahn, Jim Talbert

备注：: 7 pages, 3 figures; to appear in the proceedings of the 13th International Symposium on Radiative Corrections (Radcor 2017), 24-29 September 2017, St. Gilgen, Austria

英文摘要：

We extend our framework for the automated calculation of dijet soft functions to observables that do not obey the non-Abelian exponentiation theorem, like jet-veto or grooming soft functions that are sensitive to clustering effects of the jet algorithm. Although the matrix element for uncorrelated double emissions has a simpler structure than the one for correlated emissions, we argue that its singularity structure poses more stringent constraints on the required phase-space parametrisation. Our algorithm applies to both SCET-1 and SCET-2 soft functions and it is implemented in the novel program SoftSERVE. We present results for various jet-veto observables and obtain new predictions for the soft-drop jet-grooming algorithm.

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