8 papers
Efficient computation of two-loop amplitudes for Higgs boson pair production
Guoxing Wang, Yuxuan Wang, Xiaofeng Xu +2
We present a precise and efficient computation of the two-loop amplitudes entering the Higgs boson pair production process via gluon fusion. Our approach is based on the small-Higg…
Constructing Canonical Feynman Integrals with Intersection Theory
Jiaqi Chen, Xuhang Jiang, Xiaofeng Xu +1
Canonical Feynman integrals are of great interest in the study of scattering amplitudes at the multi-loop level. We propose to construct -form integrals of the hypergeometri…
Top quark pair production near threshold: single/double distributions and mass determination
Wan-Li Ju, Guoxing Wang, Xing Wang +3
We investigate top quark pair production near the threshold where the pair invariant mass approaches , which provides sensitive observables to extract the top…
Transverse Parton Distribution and Fragmentation Functions at NNLO: the Quark Case
Ming-Xing Luo, Xing Wang, Xiaofeng Xu +3
We revisit the calculation of perturbative quark transverse momentum dependent parton distribution functions and fragmentation functions using the exponential regulator for rapidit…
Invariant-mass distribution of top-quark pairs and top-quark mass determination
Wan-Li Ju, Guoxing Wang, Xing Wang +3
We investigate the invariant-mass distribution of top-quark pairs near the threshold, which has strong impact on the determination of the top-quark mass . We show that…
Two-loop triangle integrals with 4 scales for the vertex
Yuxuan Wang, Xiaofeng Xu, Li Lin Yang
We calculate analytically the two-loop triangle integrals entering the corrections to the vertex with using the method of differential equatio…