| Autor: |
G. Labrosse, L. Montanet, W.P. Swanson, P. Frenkiel, C. Ghesquiere, E. Lillestøl, M. Bloch, J. Diaz, P. Villemoes, Ph. Gavillet, A. Volte |
| Rok vydání: |
1970 |
| Předmět: |
|
| Zdroj: |
Nuclear Physics B. 16:239-271 |
| ISSN: |
0550-3213 |
| DOI: |
10.1016/0550-3213(70)90248-8 |
| Popis: |
A sample of 6665 annihilations of the type p (at rest)p → π + π − π + π − is analyzed. Mass and angular distributions are given. A maximum-likelihood analysis is made which uses interferring Bose-symmetrized amplitudes to parametrize the reaction in terms of final-state 2 π and 3 π interactions. The dominant final state from 1 S 0 annihilations is A 2 ± π ∓ , where the A 2 observed has M + 1335 ± 15 MeV, J P = 2 + and a decay A 2 → ϱπ . The important final states from 3 S 1 annihilations are ϱππ (s-wave ππ ) and ϱ 0 f 0 . There is evidence for structure in the ( I =0, J =0) ππ system. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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