| Autor: |
Yu.S. Pol, V.D. Aksinenko, S.A. Avramenko, E.K. Khusainov, V. P. Kondratiev, A. I. Golokhvastov, V.B. Radomanov, P.K. Manyakov, J. Lukstins, A.T. Matyushin, A.G. Semtchenkov, Yu.A. Belikov, S. A. Khorozov, B.A. Kulakov, N.S. Glagoleva, V. L. Lyuboshitz, G.G. Taran, E.V. Kozubsky, A. Piatkowski, S.A. Sedykh, V.F. Zavyalov, I.S. Saitov, J. Mirkowski, L.V. Krasnov, N.I. Kaminsky, V. T. Matyushin, A.G. Galperin, I.V. Stepanov, Z. Pavlowski, P. A. Rukoyatkin, B.P. Bannik, N.N. Nurgozhin, L.S. Okhrimenko, T.G. Ostanevich, I.E. Shevchenko, O.Yu. Mandrik, K. Gajewski, M.Kh. Anikina, O.V. Okhrimenko |
| Rok vydání: |
1996 |
| Předmět: |
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| Zdroj: |
Nuclear Physics A. 596:355-366 |
| ISSN: |
0375-9474 |
| Popis: |
The charge exchange reaction (t, 3 He) on carbon and magnesium targets is investigated in experiments using a streamer chamber. The experimental pion longitudinal momentum spectrum is compared with the calculated one for events with a single secondary pion. From this comparison it follows that the contribution from quasi-free Δ − excitation in the target nucleus in a single pion channel is only 60–70%. The momentum of the pions in the remaining fraction of events is significantly higher than that of the pions produced in delta de-excitation. The contribution from several possible processes is analyzed. The data indicate a significant role of coherent pion production via N(1440) or/and N(1520) in the target nucleus while part of the pion spectrum can be explained by projectile excitation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect