Further Evidence for the Decay K+ -> pi+ nu nubar<br> 
Akira Konaka<br>
TRIUMF<br><br> 
Abstract<br> 
K+ -> pi+ nu nubar is very sensitive to the coupling
of top to down quarks, |V_td|. Measurement of this
branching ratio provides theoretically clean determination
of |V_td|. Additional evidence for the K+ -> pi+ nu nubar
has been found in a new data set taken in 1998 with a
comparable sensitivity to that of all data taken previously.