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Title: Color-singlet production at NNLO in MCFM

We present the implementation of several color-singlet final-state processes at Next-to-Next-to Leading Order (NNLO) accuracy in QCD to the publicly available parton-level Monte Carlo program MCFM. Specifically we discuss the processes $$pp\rightarrow H$$, $$pp\rightarrow Z$$, $$pp\rightarrow W$$, $$pp\rightarrow HZ$$, $$pp\rightarrow HW$$ and $$pp\rightarrow\gamma\gamma$$. Decays of the unstable bosons are fully included, resulting in a flexible fully differential Monte Carlo code. The NNLO corrections have been calculated using the non-local $N$-jettiness subtraction approach. Special attention is given to the numerical aspects of running MCFM for these processes at this order. Here, we pay particular attention to the systematic uncertainties due to the power corrections induced by the $N$-jettiness regularization scheme and the evaluation time needed to run the hybrid openMP/MPI version of MCFM at NNLO on multi-processor systems.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2] ;  [5] ;  [6] ;  [7]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  3. Univ. of Durham, Durham (United Kingdom)
  4. Northwestern Univ., Evanston, IL (United States)
  5. Univ. of Maryland, College Park, MD (United States)
  6. Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
  7. The State Univ. of New York, Buffalo, NY (United States)
Publication Date:
OSTI Identifier:
1337761
Report Number(s):
FERMILAB-PUB-16-120-T; IPPP-16-32; arXiv:1605.08011
Journal ID: ISSN 1434-6044; 1465652
Grant/Contract Number:
AC02-07CH11359; AC02-06CH11357; FG02-91ER40684; FG02-93ER-40762
Type:
Published Article
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 77; Journal Issue: 1; Journal ID: ISSN 1434-6044
Publisher:
Springer
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States); 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