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http://hdl.handle.net/20.500.12128/12819| Tytuł: | Measurement of the dp -> 3He[eta] reaction near threshold |
| Autor: | Smyrski, J. Adam, H. H. Budzanowski, A. Czerwiński, E. Czyżykiewicz, R. Gil, D. Grzonka, D. Janusz, M. Jarczyk, L. Kamys, B. Khoukaz, A. Klaja, P. Mersmann, T. Moskal, P. Oelert, W. Piskor-Ignatowicz, C. Przerwa, J. Rejdych, B. J. Ritman, J. Rożek, T. Sefzick, T. Siemaszko, Marek Taschner, A. Winter, P. Wolke, M. Wustner, P. Zipper, Wiktor |
| Słowa kluczowe: | Meson production; Final state interaction; Eta-mesic nucleus |
| Data wydania: | 2007 |
| Źródło: | Physics Letters B, Vol. 649, iss. 4 (2007), s. 258-262 |
| Abstrakt: | Total and differential cross sections for the dp --> 3He eta reaction have been measured near threshold for 3He center-of-mass momenta in the range from 17.1 MeV/c to 87.5 MeV/c. The data were taken during a slow ramping of the COSY internal deuteron beam scattered on a proton target detecting the 3He ejectiles with the COSY-11 facility. The forward-backward asymmetries of the differential cross sections deviate clearly from zero for center-of-mass momenta above 50 MeV/c indicating the presence of higher partial waves in the final state. Below 50 MeV/c center-of-mass momenta a fit of the final state enhancement factor to the data of the total cross sections results in the 3He eta scattering length of a = |2.9 +/- 0.6| + i (3.2 +/- 0.4) fm. |
| URI: | http://hdl.handle.net/20.500.12128/12819 |
| DOI: | 10.1016/j.physletb.2007.04.021 |
| ISSN: | 0370-2693 1873-2445 |
| Pojawia się w kolekcji: | Artykuły (WNŚiT) |
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