Towards pp -> VVjj at NLO QCD: Bosonic contributions to triple vector boson production plus jet
2011
Online
report
Zugriff:
In this work, some of the NLO QCD corrections for pp -> VVjj + X are presented. A program in Mathematica based on the structure of FeynCalc which automatically simplifies a set of amplitudes up to the hexagon level of rank 5 has been created for this purpose. We focus on two different topologies. The first involves all the virtual contributions needed for quadruple electroweak vector boson production, i.e. pp -> VVVV + X. In the second, the remaining "bosonic" corrections to electroweak triple vector boson production with an additional jet (pp -> VVV j + X) are computed. We show the factorization formula of the infrared divergences of the bosonic contributions for VVVV and VVVj production with V=(W,Z,gamma). Stability issues associated with the evaluation of the hexagons up to rank 5 are studied. The CPU time of the FORTRAN subroutines rounds the 2 milliseconds and seems to be competitive with other more sophisticated methods. Additionally, in Appendix A the master equations to obtain the tensor coefficients up to the hexagon level in the external momenta convention are presented including the ones needed for small Gram determinants.
Comment: 48 pages,16 figures
Titel: |
Towards pp -> VVjj at NLO QCD: Bosonic contributions to triple vector boson production plus jet
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Autor/in / Beteiligte Person: | Campanario, Francisco |
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Veröffentlichung: | 2011 |
Medientyp: | report |
DOI: | 10.1007/JHEP10(2011)070 |
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