Search for T+ in K(+)d ? K(0)pp reaction at J-PARC

We propose to search for theta+ in K(+)d -> K(0)pp reaction at pK(+)=0.5 GeV/c at J-PARC. A large acceptance Hyperon Spectrometer, which consists mainly of a time projection chamber and a 1-T superconducting magnet, will exclusively measure the decay products of theta(+), such that theta(+) -> K(0)p, followed by K-0 -> pi(+)pi , with a mass resolution of 1 MeV at M-theta. We investigated the feasibility of the proposed experiment using a Monte Carlo simulation. As a result, we expect to collect five orders of magnitude theta(+) events, assuming a cross section of 300 mu b in 15-day beam time at J-PARC.