K− pp search experiments at J-PARC

Abstract

There are two experiments at J-PARC looking for a K− pp bound state. One experiment, E15, is a search in the 3He(K−,n) reaction at the incident beam momentum of 1 GeV/c. And the other, E27, is a search in the d(π+, K+) reaction at 1.69 GeV/c. The status of the data taking and some preliminary analysis results are presented.