New LCSR predictions for hadronic form factors

TL;DR

This paper introduces a new approach to calculating hadronic form factors using B-meson Light-Cone Distribution Amplitudes, reducing systematic errors associated with traditional quark-hadron duality approximations.

Contribution

The novel method avoids semi-global quark-hadron duality approximation, enabling more reliable and systematically improvable form factor predictions based on higher-order and higher-twist contributions.

Findings

Reduces systematic errors in form factor calculations.

Allows for systematic improvement of predictions.

Provides a more robust theoretical framework.

Abstract

We present an overview of a novel approach to the QCD Light-Cone Sum Rule method, employing $B$-meson Light-Cone Distribution Amplitudes. This method circumvents the semi-global quark-hadron duality (QHD) approximation, which can introduce an unknown and potentially significant systematic error in form factor predictions. Instead, our approach is more dependent on higher-order contributions in perturbation theory and higher-twist contributions. Unlike the systematic errors from semi-global QHD, truncation errors can be evaluated and systematically improved, allowing for robust form factor predictions.