Speaker
Takatsugu Ishikawa
(Research Center for Nuclear Physics (RCNP), Osaka University)
Description
We have studied the interaction between the eta meson and deuteron from measurement of cross sections for coherent neutral-pion and eta-meson photoproduction on the deuteron. We have found a narrow resonance-like bump in the eta-deuteron subsystem at the vicinity of the threshold, suggesting strong eta-deuteron attraction. The sharp backward-peaking angular dependence of deuteron emission, predicted by the existing theoretical calculations, does not appear. We discuss the possibilities of using coherent neutral-pion and eta-meson photoproduction on a nucleus to study the eta-nuclear interaction.
References:
Phys. Rev. C 104, L052201 (2021); Phys. Rev. C 105, 045201 (2022).
Primary author
Takatsugu Ishikawa
(Research Center for Nuclear Physics (RCNP), Osaka University)
