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- Title
MESON AND DI-ELECTRON PRODUCTION WITH HADES.
- Authors
FRÖHLICH, I.; AGAKISHIEV, G.; AGODI, C.; BALANDA, A.; BELLIA, G.; BELVER, D.; BELYAEV, A.; BLANCO, A.; BÖHMER, M.; BOYARD, J. L.; BRAUN-MUNZINGER, P.; CABANELAS, P.; CASTRO, E.; CHERNENKO, S.; CHRIST, T.; DESTEFANIS, M.; DÍAZ, J.; DOHRMANN, F.; DYBCZAK, A.; EBERL, T.
- Abstract
The HADES experiment, installed at GSI, Darmstadt, measures di-electron production in A + A, p/π + N and p/π + A collisions. Here, the π0 and η Dalitz decays have been reconstruced in the exclusive p + p reaction at 2.2 GeV to form a reference cocktail for long-lived di-electron sources. In the C+C reaction at 1 and 2 GeV/u, these long-lived sources have been subtracted from the measured inclusive e+e- yield to exhibit the signal from the early phase of the collision. The results suggest that resonances play an important role in dense nuclear matter.
- Subjects
MESONS; RESONANCE; COLLISIONS (Nuclear physics); PARTICLES (Nuclear physics); NUCLEAR reactions; NUCLEAR physics
- Publication
International Journal of Modern Physics A: Particles & Fields; Gravitation; Cosmology; Nuclear Physics, 2009, Vol 24, Issue 2/3, p317
- ISSN
0217-751X
- Publication type
Article