Speaker
Dr
Yuping Guo
(Institut für Kernphysik,Johannes Gutenberg-Universität Mainz)
Description
Up to now, only resonances with $J^{PC}=1^{--}$ have been observed in
electron-positron annihilation, while $C=+1$ resonances appear only
among the decay products. The direct production of $1^{++}$ states
could happen through two virtual photon. Due to the smallness, this
process has never been verified experimentally. Given the high luminosity
at the BESIII experiment, a search of direct production of $\chi_{c1}$ is
undergoing with dedicated data samples around the $\chi_{c1}$ mass
region. We will present an overview of the data analysis.
Primary author
Dr
Yuping Guo
(Institut für Kernphysik,Johannes Gutenberg-Universität Mainz)
