Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP09(2015)128
Keywords
QCD Phenomenology; NLO Computations
Categories
Funding
- Swiss National Science Foundation (SNF) [200020-149517]
- Research Executive Agency (REA) of the European Union [PITN-GA-2012-316704]
- ERC Advanced Grant MC@NNLO [340983]
- Swiss National Science Foundation (SNF) [200020_149517] Funding Source: Swiss National Science Foundation (SNF)
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We compute the two-loop massless QCD corrections to the helicity amplitudes for the production of two massive vector bosons in quark-antiquark annihilation, allowing for an arbitrary virtuality of the vector bosons: q (q) over bar' -> V1V2. Combining with the leptonic decay currents, we obtain the full two-loop QCD description of the corresponding electroweak four-lepton production processes. The calculation is performed by projecting the two-loop diagrams onto an appropriate basis of Lorentz structures. All two-loop Feynman integrals are reduced to a basis of master integrals, which are then computed using the differential equations method and optimised for numerical performance. We provide a public C++ code which allows for fast and precise numerical evaluations of the amplitudes.
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