Radiative and dilepton decays of the hadronic molecule Zc(3900)+

TL;DR

This paper models the Zc(3900)+ as a hadronic molecule of D and D* mesons and predicts its radiative and dilepton decay modes using a phenomenological Lagrangian approach.

Contribution

It provides detailed theoretical predictions for specific decay channels of Zc(3900)+, considering it as a hadronic molecule, which is a novel interpretation.

Findings

Predicted decay modes include Zc(+) -> J/psi + pi(+) + gamma

Predicted dilepton decay modes include Zc(+) -> J/psi + pi(+) + l(+) + l(-)

Offers a phenomenological framework for understanding Zc(3900)+'s structure

Abstract

The newly observed hidden-charm meson Zc(3900) with quantum numbers J(P) = 1(+) is considered as a hadronic molecule composed of DD*. We give detailed predictions for the decay modes Zc(+) -> J/psi + pi(+) + gamma and Zc(+) -> J/psi + pi(+) + l(+) + l(-) (l = e, mu) in a phenomenological Lagrangian approach.