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

Abstract

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 by the E760 experiment. Recent experimental studies at CLEO/BABAR/BELLE are examined in the light of new theoretical and phenomenological understanding.

Comments: 12 pages, Latex, no figures. Submitted to the International Journal of Modern Physics Letters A, as a Brief Review