Is theξ(2.2)a Higgs Boson?

Abstract

The question whether the $\xi \mathrm{}\left(2.2\right)\mathrm{}$ recently discovered in $\frac{J}{\psi }\to \gamma +\xi$ can be a Higgs boson in a nonminimal Higgs scheme is discussed. It is pointed out that a search for $\xi$ in $B$ decays provides a critical test.