Search for exclusive photoproduction of Z${}_c^{\pm }$(3900) at COMPASS

C. Adolph, R. Akhunzyanov, M. G. Alexeev +205

A search for the exclusive production of the $Z_c^{\pm }(3900)$ hadron by virtual photons has been performed in the channel $Z_c^{\pm }(3900)\to J/\psi {\pi }^{\pm }$. The data cover t…