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Journal Article
2-split of form factors via BCFW recursion relation
2026
Overview
A
bstract
Recently, [
1
] demonstrated the 2-split for form factor under specific kinematic constraints. This factorization is analogous to that observed in scattering amplitudes. A key consequence of this structure is the presence of hidden zeros, where the form factors vanish on specific kinematic loci. We first establish these zeros and a new zero for the form factors of the composite operators
and
, and then employ an inductive proof based on the BCFW recursion relation to prove the 2-split factorization for any number of external particles.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V,SpringerOpen
