144 citations · 2k across the 57 of their papers we have counts for
59 papers
Double copy for tree-level form factors. Part II. Generalizations and special topics
Guanda Lin, Gang Yang
Both the Bern, Carrasco and Johansson (BCJ) and the Kawai, Lewellen and Tye (KLT) double-copy formalisms have been recently generalized to a class of scattering matrix elements (so…
Charmoniumlike tetraquarks in a chiral quark model
Gang Yang, Jialun Ping, Jorge Segovia
The lowest-lying charmonium-like tetraquarks and , with spin-parity , and , and isospin and , are syst…
Is Yang-Mills Theory Unitary in Fractional Spacetime Dimensions?
Qingjun Jin, Ke Ren, Gang Yang +1
We present concrete evidence that Yang-Mills theory exhibits non-unitarity in non-integer spacetime dimensions. This violation of unitarity stems from evanescent operators that, wh…
Double copy for tree-level form factors. Part I. Foundations
Guanda Lin, Gang Yang
The double-copy construction for form factors was reported in our previous work, in which a novel mechanism of turning spurious poles in Yang-Mills theory into physical poles in gr…
Analytic Four-Point Lightlike Form Factors and OPE of Null-Wrapped Polygons
Yuanhong Guo, Lei Wang, Gang Yang
We obtain for the first time the analytic two-loop four-point MHV lightlike form factor of the stress-tensor supermultiplet in planar SYM where the momentum carrie…
Gluonic evanescent operators: two-loop anomalous dimensions
Qingjun Jin, Ke Ren, Gang Yang +1
Evanescent operators are a special class of operators that vanish in four-dimensional spacetime but are non-zero in dimensions. In this paper, we continue our systematic s…