With the development on canonical differential equation, UT integral basis, NeatIBP for generating short IBP systems, the era of analytic computations of multi-loop multi-leg multi-scale Feynman integrals is coming. We analytically computed several families of 2loop 6point massless Feynman integrals and this is the first two-loop analytic Feynman integral computation with eight scales. Furthermore, our later development finished the computation of all 2loop 6point planar Feynman integrals. On the other hand, we also computed the 3loop pentagon-box-box integral family and the analytic computation of all 3loop 5point planar Feynman integrals is within reach.

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杨刚 研究员