Extracting $B \to K^*$ Form Factors from Data

TL;DR

This paper presents a model-independent method to extract ratios of $B o K^*$ form factors from recent decay data, enhancing the precision of Standard Model tests.

Contribution

It introduces a novel approach for extracting form factor ratios from experimental data without relying on specific models.

Findings

Form factor ratios extracted at low recoil from data

Method improves with future angular studies

Enhances understanding of form factors for Standard Model tests

Abstract

We extract ratios of $B \to K^*$ form factors at low hadronic recoil from recent data on $B \to K^* \mu^+ \mu^-$ decays in a model-independent way. The presented method will improve in the future with further (angular) studies in semileptonic rare B-decays and advance our understanding of form factors, which are important inputs in precision tests of the Standard Model.