The "radiative Delta -> N gamma" decay in light cone QCD

TL;DR

This paper calculates the Delta to N gamma decay coupling using light cone QCD sum rules, providing a theoretical estimate that aligns well with experimental data.

Contribution

The paper introduces a novel calculation of the Delta N gamma coupling within the light cone QCD sum rules framework, offering a new theoretical estimate.

Findings

Calculated g_{Delta N gamma} = (1.6 ± 0.2) GeV^(-1)

Estimated branching ratio matches experimental data

Supports validity of light cone QCD sum rules in baryon decays

Abstract

The "g_{Delta N gamma}" coupling for the "Delta -> N gamma" decay is calculated in framework of the light cone QCD sum rules and is found to be g_{Delta N gamma} = (1.6 pm 0.2) GeV^(-1). Using this value of g_{Delta N gamma} we estimate the branching ratio of the Delta^+ -> N gamma decay, which is in a very good agreement with the experimental result.