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Intersection theory rules symbology
Jiaqi Chen, Bo Feng, Li Lin Yang
We propose a novel method to determine the structure of symbols for any family of polylogarithmic Feynman integrals. Using the d log-bases and simple formulas for the leading order…
Reduction of General One-loop Integrals Using Auxiliary Vector
Bo Feng, Tingfei Li, Hongbin Wang +1
As a key method to deal with loop integrals, Integration-By-Parts (IBP) method can be used to do reduction as well as establish the differential equations for master integrals. How…
One-loop diagrams with quadratic propagators from the worldsheet
Bo Feng, Song He, Yong Zhang +1
It is well known that forward limits of tree-level amplitudes (and those trivalent diagrams they consist of) produce one-loop amplitudes and trivalent diagrams with propagators lin…
Analytic Tadpole Coefficients of One-loop Integrals
Bo Feng, Tingfei Li, Xiaodi Li
One remaining problem of unitarity cut method for one-loop integral reduction is that tadpole coefficients can not be straightforward obtained through this way. In this paper, we r…
Note on solutions of scattering equations
Bo Feng, Chang Hu, Yaobo Zhang
In the CHY-frame for the amplitudes, there are two kinds of singularities we need to deal with. The first one is the pole singularities when the kinematics is not general, such tha…
Reduction of one-loop integrals with higher poles by unitarity cut method
Bo Feng, Hongbin Wang
Unitarity cut method has been proved to be very useful in the computation of one-loop integrals. In this paper, we generalize the method to the situation where the powers of propag…