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OPITeR: A program for tensor reduction of multi-loop Feynman Integrals

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arxiv 2411.02233 v2 pith:RG4MSZ3Y submitted 2024-11-04 hep-ph hep-th

Jae Goode , Franz Herzog , Sam Teale This is my paper
classification hep-phhep-th
keywords programreductiontensorfeynmanformintegralsmulti-loopopiter
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We present OPITeR, a FORM program for the reduction of multi-loop tensor Feynman integrals. The program can handle tensors, including spinor indices, with rank of up to 20 and can deal with up to 8 independent external momenta. The reduction occurs in $D$ dimensions compatible with conventional dimensional regularization. The program is able to manifest symmetries of the integrand in the tensor reduced form.

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Cited by 2 Pith papers

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  1. Two-loop QCD corrections to $ZH$ and off-shell $Z$ boson pair production in gluon fusion

    hep-ph 2025-09 conditional novelty 6.0 of 10

    The paper provides fast, analytic two-loop virtual QCD corrections for gluon-induced ZH and off-shell ZZ production with full top-quark mass dependence, validated against numerical results at the sub-percent level.

  2. SubTropica

    hep-th 2026-04 unverdicted novelty 5.0 of 10

    SubTropica is a software package that automates symbolic integration of linearly-reducible Euler integrals via tropical subtraction, supported by HyperIntica and an AI-driven Feynman integral database.

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