EPJ

2024 Impact factor 2.8
EPJ A - Hadrons and Nuclei
Hadrons and Nuclei


Eur. Phys. J. A 11, 231-235 (2001)

Exchange interaction between intermediate D13(1520)-hole and S11(1535)-hole states in the near-threshold coherent ${\eta}$ photoproduction from nuclei

V.V. Balashov, V.K. Dolinov and M.M. Kaskulov

Institute of Nuclear Physics, Moscow State University, Moscow 119899, Russia

This email address is being protected from spambots. You need JavaScript enabled to view it.

(Received: 20 February 2001 Communicated by V. Vento)

Abstract
Coherent ${\eta}$-meson photoproduction from nuclei is considered within an extended analogue of the $\Delta$-hole model taking into account the configuration mixing of baryon-hole excitations of different sorts of baryons. Calculated integrated and differential cross-sections for reactions ${^{12}C(\gamma,\eta)^{12}C_{g.s.}}$ and ${^{16}O(\gamma,\eta)^{16}O_{g.s.}}$ demonstrate the important role of the exchange interaction between intermediate D13(1520)-hole and S11(1535)-hole excitations.

PACS
14.20.Gk - Baryon resonances with S=0 .
14.40.-n - Mesons.
25.20.Lj - Photoproduction reactions.
27.20.+n - $6 \leq A \leq 19 $ .

© Società Italiana di Fisica, Springer-Verlag 2001

Conference announcements