We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Recent results on antiproton annihilation in <sup>4</sup>He.
- Authors
Montagna, P.; Bendiscioli, G.; Bressani, T.; Fontana, A.; Lavezzi, L.; Panzarasa, A.; Rotondi, A.; Salvini, P.
- Abstract
With experimental data of ${\bar p}$ annihilation at rest on nuclei of 4He, collected by the Obelix spectrometer (LEAR, CERN), we have studied a number of reactions with 4 and 5 charged particles in the final state, distinguishing the annihilations on more than one nucleon, and with strangeness production. The main results of our observations are: (a) a higher (up to 20 times) strangeness production in 4He than in H; (b) the evidence of a possible signature of a $\overline{K}pp$ ( $\overline{K} ppn$ ) bound state; (c) a measurement of a double strangeness production (2 K +) and a hint for some production yields of double-strange bound systems like 2 K −2 n; (d) a signal compatible with the baryonic $\Theta^+(1530)$ resonance, interpreted as a pentaquark system.
- Subjects
PARTICLES (Nuclear physics); NUCLEAR physics; COLLISIONS (Nuclear physics); ANNIHILATION reactions; NUCLEAR reactions
- Publication
Few-Body Systems, 2008, Vol 43, Issue 1-4, p115
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-008-0218-6