The K^{+}--->\pi^{+}\nu\bar{nu} Rare Decay in Two Higgs Doublet Model
  The rare k+--->pi+ \nu \bar{\nu} decay is investigated in the context of type II two-Higgs-doublet model (2HDM). By using the existing experimental data of the branching ratio, restrictions on the free parameters of the model m_H, and tan\beta are obtained: tan\beta belong to the range 0.7- o.8, and m_H belong to the range 500- 700 GeV. 
Thabit Barakat