The Saga of $h_c$ and $h_b$ Search in Heavy Quarkonia

T. Barnes, T. E. Browder, S. F. Tuan

In this brief review, we examine carefully and critically the status of search for the $h_c$ [$\psi (1^1{P}_1)$] charmonium state and the $h_b$ [${\rm Y}(1^1{P}_1)$] bottonium state, initiated b…