Speaker
Ryo Kobayakawa
(Osaka University)
Description
The K-bar NN system is a promising candidate for studying the strongly attractive K-bar N interaction in few-body nuclear systems. We investigated the gamma d to K-zero Lambda p reaction using the LEPS2 detector at SPring-8 with tagged photon beams of 1.3 to 2.4 GeV. We observed a clear enhancement in the Lambda p invariant-mass spectrum at low momentum transfer. We performed a two-dimensional analysis of the Lambda p invariant mass and momentum transfer, including major background processes. This result provides evidence for a K-bar NN quasi-bound state.
Author
Ryo Kobayakawa
(Osaka University)