A very broad X(4260) and the resonance parameters of the 3D vector charmonium state
High Energy Physics - Phenomenology
2014-11-21 v2 High Energy Physics - Experiment
Abstract
We argue that the X(4260) enhancement contains a wealth of information on vector c-cbar spectroscopy. We discuss the shape of the X(4260) observed in the OZI-forbidden process "electron-positron into J/psi and a pair of charged pions", in particular at and near vector charmonium resonances as well as open-charm threshold enhancements. The resulting very broad X(4260) structure does not seem to classify itself as a vector charmonium resonance, but its detailed shape allows to identify new vector c-cbar states. Here, we estimate the resonance parameters of the psi(3D) state.
Keywords
Cite
@article{arxiv.1005.1010,
title = {A very broad X(4260) and the resonance parameters of the 3D vector charmonium state},
author = {Eef van Beveren and George Rupp and J. Segovia},
journal= {arXiv preprint arXiv:1005.1010},
year = {2014}
}
Comments
4 pages, 5 figures; version 2: 2 figures replaced