Analysis of the $\psi (3770)$ resonance in line with unitarity and analyticity constraints

Christoph Hanhart, Stephan Kürten, Méril Reboud +1

We study the inclusive and exclusive cross sections of $e^{+}{e}^{-}\to \text{hadrons}$ for center-of-mass energies between 3.70 GeV and 3.83 GeV to infer the mass, width, and couplings…