期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP04(2013)037
关键词
NLO Computations; Hadronic Colliders
资金
- Swiss National Science Foundation (SNF) [200021-126364]
- Deutsche Forschungsgemeinschaft (DFG) [623/2-1]
- Helmholtz alliance Physics at the Terascale
- Swiss National Science Foundation (SNF) [200021_126364] Funding Source: Swiss National Science Foundation (SNF)
We introduce the computer code RECOLA for the recursive generation of treelevel and one-loop amplitudes in the Standard Model. Tree-level amplitudes are constructed using off-shell currents instead of Feynman diagrams as basic building blocks. One-loop amplitudes are represented as linear combinations of tensor integrals whose coefficients are calculated similarly to the tree-level amplitudes by recursive construction of loop off-shell currents. We introduce a novel algorithm for the treatment of colour, assigning a colour structure to each off-shell current which enables us to recursively construct the colour structure of the amplitude efficiently. RECOLA is interfaced with a tensor-integral library and provides complete one-loop Standard Model amplitudes including rational terms and counterterms. As a first application we consider Z + 2 jets production at the LHC and calculate with RECORA the next-to-leading-order electroweak corrections to the dominant, partonic channels.
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