Formation of {eta}{sup '}(958)-Mesic Nuclei and Axial U{sub A}(1) Anomaly at Finite Density
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047 (Japan)
- Department of Physics, Nara Women's University, Nara 630-8506 (Japan)
We discuss the possibility of producing the bound states of the {eta}{sup '}(958) meson in nuclei theoretically. We calculate the formation cross sections of the {eta}{sup '} bound states with the Green function method for the ({gamma},p) reaction and discuss the experimental feasibility at photon facilities such as SPring-8. We conclude that we can expect to observe resonance peaks in ({gamma},p) spectra for the formation of {eta}{sup '} bound states and we can deduce new information on {eta}{sup '} properties at finite density. These observations are believed to be essential to know the possible mass shift of {eta}{sup '} and deduce new information on the effective restoration of the chiral U{sub A}(1) anomaly in the nuclear medium.
- OSTI ID:
- 20696380
- Journal Information:
- Physical Review Letters, Vol. 94, Issue 23; Other Information: DOI: 10.1103/PhysRevLett.94.232503; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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