Hadroproduction data support tetraquark hypothesis for $\ddot{I}{‡}_{c1}(3872)$

Wai Kin Lai, Hee Sok Chung

We show that the recently proposed tetraquark hypothesis for the nature of the $\ddot{I}{‡}_{c1}(3872)$ results in a formalism for inclusive production rates that has no unknown parameters.…