Abstract:
The exclusive 2H( 3He, t)2p reaction has been studied at 2 GeV for energy transfers up to 500 MeV and triton angles up to 3.4°. The protons were measured in the large acceptance magnetic detector DIOGENE, in coincidence with the forward tritons detected in a dedicated magnetic arm. The energy transfer spectra extend well above the pion threshold. However, in the region of Δ excitation, the yield is less than 10% of the inclusive 2H( 3He, t) cross-section, which indicates the small contribution of the ΔN ↦ NN process. The angular distributions of the two protons in their center of mass have been analysed as a function of energy transfer and triton angle and a Legendre polynomial decomposition has been achieved. These data have been compared to a model based on a coupled-channel approach for describing the NN and NΔ systems.
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Received: 21 October 2002 / Accepted: 15 November 2002 / Published online: 11 March 2003
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ID="a"e-mail: ramstein@ipno.in2p3.fr
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ID="†"Deceased.
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ID="†"Deceased.
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ID="d"Present adress: School of Engineering, Jönköping University, P.O. Box 1026, S-551 11 Jönköping, Sweden.
Communicated by M. Garçon
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Ramstein, B., Mosbacher, C., Hennino, T. et al. 2H( 3He, t)2p reaction at 2 GeV. Eur Phys J A 16, 583–597 (2003). https://doi.org/10.1140/epja/i2002-10116-7
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DOI: https://doi.org/10.1140/epja/i2002-10116-7