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Title: The NNLO QCD soft function for 1-jettiness

We calculate the soft function for the global event variable 1-jettiness at next-to-next-to-leading order (NNLO) in QCD. We focus specifically on the non-Abelian contribution, which, unlike the Abelian part, is not determined by the next-to-leading order result. The calculation uses the known general forms for the emission of one and two soft partons and is performed using a sector-decomposition method that is spelled out in detail. Results are presented in the form of numerical fits to the 1-jettiness soft function for LHC kinematics (as a function of the angle between the incoming beams and the final-state jet) and for generic kinematics (as a function of three independent angles). These fits represent one of the needed ingredients for NNLO calculations that use the N-jettiness event variable to handle infrared singularities.
Authors:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [3] ;  [3]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. University of Durham (United Kingdom). Department of Physics, Institute for Particle Physics Phenomenology
  3. State Univ. of New York (SUNY), Buffalo, NY (United States). Department of Physics
Publication Date:
Report Number(s):
IPPP-17-76; FERMILAB-PUB-17-493-T; arXiv:1711.09984
Journal ID: ISSN 1434-6044; 1639277; TRN: US1801722
Grant/Contract Number:
AC02-07CH11359
Type:
Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 78; Journal Issue: 3; Journal ID: ISSN 1434-6044
Publisher:
Springer
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1426829
Alternate Identifier(s):
OSTI ID: 1423229