| Autor: |
I. Navon, J. Alster, W. Burger, Daniel Ashery, S. A. Wood, E. Piasetzky, J. Lichtenstadt, U. Sennhauser, A. Rahav, C. H. Q. Ingram, R. A. Schumacher, P. A. Amaudruz, M. Botje |
| Rok vydání: |
1991 |
| Předmět: |
|
| Zdroj: |
Physical Review Letters. 66:1279-1282 |
| ISSN: |
0031-9007 |
| Popis: |
Cross sections, pion momentum spectra, and angular distributions for the reactions $^{12}\mathrm{C}$(${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$,${\mathrm{\ensuremath{\pi}}}^{+}$${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$) and $^{12}\mathrm{C}$(${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$,2${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$) at a bombarding energy of 292 MeV were measured wth a 360\ifmmode^\circ\else\textdegree\fi{} spectrometer. An enhancement of the cross-section ratio of $^{12}\mathrm{C}$(${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$,2${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$) to $^{12}\mathrm{C}$(${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$,${\mathrm{\ensuremath{\pi}}}^{+}$${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$) relative to that of the elementary cross sections was observed, and is discussed in terms of various nuclear-medium effects including a double-\ensuremath{\Delta} production channel. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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