Studying the {e^ + }{e^ - } to {l( {{D^*}{{bar D}^*}} right)^ pm }{π ^ mp } reaction and the claim for the Zc(1790) resonance
Abstract
In this talk I show the results we find for the D^ * overline D ^ * invariant mass distribution associated to the reaction {e^ + }{e^ - } to {l( {{D^*}{{bar D}^*}} right)^ pm }{π ^ mp }, which has been studied by the BESIII collaboration and claims of a new JP = 1+ state, called Zc(4025), have been made. As I will show, while the interpretation of the BESIII collaboration for the signal found is plausible, there are others which are equally possible, like a JP = 2+ resonance or a bound state or simply a pure D-wave background. Thus, the arguments to claim a new state around 4025 MeV in the D^ * overline D ^ * invariant mass distribution get weaker.
- Publication:
-
Chiral Symmetry in Hadrons and Nuclei - Proceedings of the Seventh International Symposium. Edited by GENG LI-SHENG ET AL. Published by World Scientific Publishing Co. Pte. Ltd
- Pub Date:
- October 2015
- DOI:
- 10.1142/9789814618229_0021
- Bibcode:
- 2015cshn.conv..111T