A possible signature of new physics at BES-III

Jia-Heng Zou, Hai-Bo Li, Xue-Yao Zhang

The recent observations of the purely leptonic decay $\Ds \to μ^+ ν_μ$ and ${\tau }^{+}{\nu }_{\tau }$ at CLEO-c and $B$ factory may allow a possible contribution from a charged Higgs boson. One such…