PMID: 15244998Jul 13, 2004Paper

Photoproduction of eta-mesic 3He

Physical Review Letters
M PfeifferD P Watts

Abstract

The photoproduction of eta-mesic 3He has been investigated using the TAPS calorimeter at the Mainz Microtron accelerator facility MAMI. The total inclusive cross section for the reaction gamma3He-->etaX has been measured for photon energies from threshold to 820 MeV. The total and angular differential coherent eta cross sections have been extracted up to energies of 745 MeV. A resonancelike structure just above the eta production threshold with an isotropic angular distribution suggests the existence of a resonant quasibound state. This is supported by studies of a competing decay channel of such a quasibound eta-mesic nucleus into pi(0)pX. A binding energy of (-4.4+/-4.2) MeV and a width of (25.6+/-6.1) MeV is deduced for the quasibound eta-mesic state in 3He.

References

Nov 1, 1986·Physical Review C: Nuclear Physics·L C Liu, Q Haider
Mar 1, 1993·Physical Review C: Nuclear Physics·S S KamalovC Bennhold
Mar 1, 1993·Physical Review C: Nuclear Physics·C Wilkin
May 1, 1996·Physical Review C: Nuclear Physics·B MayerA Moalem

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Citations

Jul 23, 2008·Physical Review Letters·I JaegleUNKNOWN CBELSA/TAPS Collaboration
Jun 1, 2013·Reports on Progress in Physics·N G KelkarB K Jain
Feb 1, 2008·Physical Review Letters·N G Kelkar
Aug 7, 2007·Physical Review Letters·T MersmannA Wrońska
Mar 24, 2005·Physical Review Letters·C Hanhart

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