New Charmonium-like States at B-Factories

TL;DR

This paper reviews recent experimental discoveries of new charmonium-like states at B-factories, focusing on decay modes and analyses of states such as X(3872), Z(4430)+, and Z(4050/4250)+, advancing understanding of exotic hadrons.

Contribution

It presents new experimental results on decay channels and analyses of charmonium-like states, contributing to the understanding of their properties and nature.

Findings

Observation of X(3872) decays to D0 D*0bar and psi gamma.

Analysis of Z(4430)+ decaying to psi pi+.

Discussion of Z(4050/4250)+ decays to chi_c1 pi+.

Abstract

Since the discovery of the X(3872) in 2003 the B-factory experiments BaBar and Belle have been driving forces in the spectroscopy of new charmonium-like states. In this article the latest results on the decays X(3872) -> D0 D*0bar and X(3872) -> psi gamma, where psi stands for J/psi or psi(2S), are presented and analyses of Z(4430)+ -> psi pi+ and Z(4050/4250)+ -> chi_c1 pi+ are discussed.