Form factors from string amplitudes

2025/04/22 by Cao, Qu · 2 citations
#FOS: Physical sciences #High Energy Physics - Theory (hep-th)

paper · doi:10.48550/arxiv.2504.15702

Abstract

In this letter, we propose a stringy model for n-point tree-level form factor with the off-shell operator in the scalar and gluon theories, from the bosonic string disk amplitude: n open string states and 1 closed string state scatter on the disk. In the field-theory limit (α'→0), the stringy form factor reduces to the form factor, helps us to investigate the hidden properties of the field-theory form factors, manifest the factorization and soft behaviors, and uncover more non-trivial relations between form factors and scattering amplitudes.

Cited by

• Hidden zeros for higher-derivative YM and GR amplitudes at tree-level
• 2-Split of Form Factors via BCFW Recursion Relation

Related

• Natural Generalization of Bosonic String Amplitudes
• On the soft limit of tree-level string amplitudes
• A universal splitting of string and particle scattering amplitudes
• Relations between closed string amplitudes and mixed string amplitudes at tree-level
• A Note on Soft Factors for Closed String Scattering