2 problems

Let an $hell$-loop scattering amplitude be an amplitude at loop order $hell$, and let a generalisation of the genus-zero twistor-string recursion relation be a recursion relation f…

Let $t^j_\ell$ be parameters interpolating between the twistor-string integrand at $t^j_\ell=1$ and the BCFW expansion at $t^j_\ell=0$. Parameter-independence conjecture. The resul…