| Issue |
EPJ Web Conf.
Volume 202, 2019
9th International Workshop on Charm Physics (CHARM 2018)
|
|
|---|---|---|
| Article Number | 06009 | |
| Number of page(s) | 5 | |
| Section | Parallel Sessions | |
| DOI | https://doi.org/10.1051/epjconf/201920206009 | |
| Published online | 13 March 2019 | |
https://doi.org/10.1051/epjconf/201920206009
Direct production of χc1 at BESIII
Institute fürKernphysik, Johannes Gutenberg Universität Mainz
* e-mail: guo@uni-mainz.de
Published online: 13 March 2019
The production of resonances in electron-positron annihilation has only been observed for states with quantum numbers JPC = 1−−, while C = +1 resonances appear only among the decay products. The direct production of the 1++ states could happen through two-photon or neutral current. Due to the smallness of the production rate, this process has never been verified experimentally. With the high luminosity and good performance of the BESIII experiment, a search of the direct production of the 1++ state in charmonium region, χc1, is undergoing with dedicated data samples around the χc1 mass. An overview of the data analysis will be presented.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.