Search for {eta}-mesic nuclei in a recoil-free transfer reaction

Journal Article · Thu Jan 15 00:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.012201· OSTI ID:21199479

Budzanowski, A; Kliczewski, S; Siudak, R ^[1]; Chatterjee, A; Jha, V; Kailas, S; Roy, B J; Shukla, P ^[2]; Hawranek, P; Magiera, A ^[3]; Jahn, R ^[4]; Jain, B K ^[5]; Kilian, K; Maier, R; Protic, D; Ritman, J; Rossen, P von ^[6]; Kirillov, Da; Machner, H ^[6]; Kirillov, Di ^[7]

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1. Institute of Nuclear Physics, PAN, Krakow (Poland)
2. Nuclear Physics Division, BARC, Mumbai (India)
3. Institute of Physics, Jagellonian University, Krakow (Poland)
4. Helmholtz-Institut fuer Strahlen- und Kernphysik der Universitaet Bonn, D-53115 Bonn (Germany)
5. Mumbai University, Mumbai (India)
6. Institut fuer Kernphysik, Forschungszentrum Juelich, Juelich (Germany)
7. Laboratory for High Energies, JINR, Dubna (Russian Federation)

We have studied the reaction p+{sup 27}Al {yields} {sup 3}He+p+{pi}{sup -}+X at recoil-free kinematics. An {eta} meson possibly produced in this reaction would be thus almost at rest in the laboratory system and could therefore be bound with high probability, if nuclear {eta} states exist. The decay of such a state through the N*(1535) resonance would lead to a proton-{pi}{sup -} pair emitted in opposite directions. For these conditions we find some indication of such a bound state. An upper limit of {approx_equal}0.5 nb is found.

• OSTI ID: 21199479
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 79, Issue 1; Other Information: DOI: 10.1103/PhysRevC.79.012201; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27
BOUND STATE
DECAY
EMISSION
ETA MESONS
HELIUM 3
ION-ATOM COLLISIONS
LABORATORY SYSTEM
PIONS MINUS
PIONS PLUS
PROBABILITY
PROTON-EMISSION DECAY
PROTONS
RECOILS
RESONANCE
TRANSFER REACTIONS