| Autor: |
V. T. Cocconi, H. Wieczorek, R.M. Eason, H. Lambacher, H. Saarikko, F. A. Triantis, D. R. O. Morrison, P. K. Malhotra, H. Grässler, U. Gensch, H. H. Seyfert, K. L. Wernhard, Maggie C. Walter, F. Mandl, D. J. Kocher, Keith W. J. Barnham, M. Markytan |
| Rok vydání: |
1977 |
| Předmět: |
|
| Zdroj: |
Nuclear Physics B. 118:189-198 |
| ISSN: |
0550-3213 |
| DOI: |
10.1016/0550-3213(77)90305-4 |
| Popis: |
The inclusive production of Σ + (1385) and Σ − (1385) has been studied in K − p interactions at 10 and 10 and 16 GeV/ c . It is found that the cross sections for the reactions K − p → Σ ± (1385) + anything are approximately constant in the energy range form 10 to 32 GeV/ c , being ≈ 350 μ b for Σ + (1385) and ≈ 250 μ b for Σ − (1385). The d σ d p ⊥ 2 distributions for Σ ± (1385) fall off exponentially with increasing p ⊥ 2 , with sloped of about 3 (GeV/ c ) −2 . The d σ /d x distributions for Σ + (1385) and Σ − (1385) are markedly different: the production of Σ − (1385) is symmetrical forwards and backwards in the c.m.s.; for Σ + (1385), the distribution is the same as for Σ − (1385) in the forward direction, but presents a large excess of events in the backward direction. This indicates that for the production of both Σ + (1385) and Σ − (1385) the fragmentation of the incoming kaon is negligible. The fragmentation of the target proton is negligible for Σ − (1385), but it is important for Σ + (1385) and is responsible for the excess (∼100 μ b) of its cross section over that for Σ − (1385). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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