Measurement of the mesonic decay branch of the K̄ NN quasibound state
We conducted measurements of K-+He3→πYN+N′ reactions using a 1GeV/cK - beam, with the objective of understanding the broad decay width of K̄NN (approximately twice as broad as that of Λ(1405) considered to be the K̄N quasibound state). We successfully reproduced distributions of the πYN invariant mass and momentum transfer for πYN using model-fitting functions for K̄NN formation and quasifree K̄ a
