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41 lines
1.5 KiB
41 lines
1.5 KiB
This is a tensor reduction routine
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based on the work of Passarino and Veltman
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@article{Passarino:1978jh,
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author = "Passarino, G. and Veltman, M.J.G.",
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title = "{One Loop Corrections for e+ e- Annihilation Into mu+ mu-
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in the Weinberg Model}",
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journal = "Nucl.Phys.",
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volume = "B160",
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pages = "151",
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doi = "10.1016/0550-3213(79)90234-7",
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year = "1979",
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reportNumber = "Print-79-0284 (UTRECHT)",
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SLACcitation = "%%CITATION = NUPHA,B160,151;%%",
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}
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The notation for the form factors
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is slightly different that the notation
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of PV, i.e. the naming convention is more
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systematic. The formula implemented
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can be found in,
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@article{Ellis:2011cr,
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author = "Ellis, R. Keith and Kunszt, Zoltan and Melnikov, Kirill
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and Zanderighi, Giulia",
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title = "{One-loop calculations in quantum field theory: from
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Feynman diagrams to unitarity cuts}",
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journal = "Phys. Rept.",
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volume = "518",
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year = "2012",
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pages = "141-250",
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doi = "10.1016/j.physrep.2012.01.008",
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eprint = "1105.4319",
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archivePrefix = "arXiv",
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primaryClass = "hep-ph",
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reportNumber = "FERMILAB-PUB-11-195-T",
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SLACcitation = "%%CITATION = ARXIV:1105.4319;%%"
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}
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In addition in this version, as in the original PV paper,
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the tensor integrals are expanded in the external momenta, p_i
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