6533b836fe1ef96bd12a1cbd

RESEARCH PRODUCT

$��_{c0}(1P)$ decay into $\bar��~����$ in search of an $I=1$, $1/2^-$ baryon state around $\bar K N$ threshold

subject

description

We present the theoretical study of the process $��_{c0}(1P)\to\bar������$ decay, by taking into account the $����$ and $��\bar��$ final state interactions of the final meson-baryon pair based on the chiral unitary approach. We show that the process filters the isospin $I=1$ in the $����$ channel and offers a reaction to test the existence of an $I=1$ state with strangeness $S=-1$ and spin-parity $J^p=1/2^-$ around the $\bar KN$ threshold predicted by some theories and supported by some experiments.