Constraints on axion-like particles using lattice QCD calculations of the rate for $J/\ddot{I}ˆ\to {\hat{I}}^{3}a$

Brian Colquhoun, Christine T. H. Davies, G. Peter Lepage +1

A key search mode for axion-like particles (ALPs) that couple to charm quarks is $J/\ddot{I}ˆ\to {\hat{I}}^{3}a$. Here we calculate the form factor that allows the rate of this process to be determi…