Speaker
Dr
Timofey Uglov
(LPI RAS)
Description
Data on 7 open-charm channels collected by the Belle Collaboration are analyzed simultaneously using a unitary approach based on a coupled-channel model in a wide energy range $\sqrt{s}=$3.7-4.7~GeV. The resulting fit provides a remarkably
good overall description of the line shapes in all studied
channels. Parameters of 5 vector charmonium resonances are extracted
from the fit.
It is demonstrated, that this approach could be used account for all exclusive channels and thus solve the long-term problem of the charmonium spectra near threshold.
The talk is based on "Exclusive open-charm near-threshold cross sections in a coupled-channel approach" by T. Uglov et all JETP Lett. 105 (2017) no.1, 1.
Primary author
Dr
Timofey Uglov
(LPI RAS)
