Possibility to study $\eta$-mesic nuclei and photoproduction of slow $\eta$-mesons at the GRAAL facility - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Reports Year : 2003

Possibility to study $\eta$-mesic nuclei and photoproduction of slow $\eta$-mesons at the GRAAL facility

V.A. Baskov
  • Function : Author
V. Kouznetsov
  • Function : Author
A.I. L'Vov
  • Function : Author
L.N. Pavlyuchenko
  • Function : Author
V.V. Polyanski
  • Function : Author
G.A. Sokol
  • Function : Author

Abstract

A new experiment is proposed with the aim to study eta-mesic nuclei and low-energy interactions of eta with nuclei. Two decay modes of eta produced by a photon beam inside a nucleus will be observed, namely a collisional decay \eta N \to \pi N inside the nucleus and the radiative decay \eta \to \gamma \gamma outside. In addition, a collisional decay of stopped S_{11}(1535) resonance inside the nucleus, S_{11}(1535) N \to N N, will be studied. The experiment can be performed using the tagged photon beam at ESRF with the end-point energy 1000 MeV and the GRAAL detector which includes a high-resolution BGO calorimeter and a large acceptance lead-scintillator time-of-flight wall. Some results of simulation and estimates of yields are given.

Dates and versions

in2p3-00020227 , version 1 (13-01-2004)

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Cite

V.A. Baskov, J.P. Bocquet, V. Kouznetsov, A. Lleres, A.I. L'Vov, et al.. Possibility to study $\eta$-mesic nuclei and photoproduction of slow $\eta$-mesons at the GRAAL facility. 2003, pp.1-20. ⟨in2p3-00020227⟩
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