On the Possibility of a New Boson X^0 (214 MeV) in Sigma^+ -> p mu^+ mu^-

N. G. Deshpande, G. Eilam, J. Jiang

We consider the existence of the state X^0 (214 MeV) in Sigma^+ -> p mu^+ mu^- decay found by the HyperCP collaboration. We assume that a fundamental spin zero boson X^0 coupled to…