EPJ

2024 Impact factor 2.8
EPJ A - Hadrons and Nuclei
Hadrons and Nuclei
Eur. Phys. J. A 6, 225-233

Inclusive 2H(3He,t) reaction at 2 GeV

B. Ramstein1 - C.A. Mosbacher2 - D. Bachelier1,$^\dag $, I. Berquist3,$^\dag $, M. Boivin4 - J.L. Boyard1 - A. Brockstedt3 - L. Carlén3 - R. Dahl5 - P. Ekström3 - C. Ellegaard5 - C. Gaarde5,$^\dag $, T. Hennino1 - J.C. Jourdain1 - C. Goodman6 - J.S. Larsen5 - P. Radvanyi1,4 - M. Roy-Stephan1

1 Institut de Physique Nucléaire, IN2P3(CNRS), 91406 Orsay Cedex, France
2 Institut für Kernphysik, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
3 Institute of Physics, University of Lund, 223 62 Lund, Sweden
4 Laboratoire National Saturne, IN2P3(CNRS) and DSM(CEA), 91191 Gif-sur-Yvette Cedex, France
5 Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Danemark
6 Indiana University, Bloomington, IN 47405, USA

Received: 19 April 1999 / Revised version: 5 July 1999 Communicated by W. Weise

Abstract
The inclusive 2H(3He,t) reaction has been studied at 2 GeV for energy transfers up to 500 MeV and scattering angles from 0.250 up to 40. Data are well reproduced by a model based on a coupled-channel approach for describing the NN and N$\Delta$ systems. The effect of final state interaction is important in the low energy part of the spectra. In the delta region, the cross-section is very sensitive to the effects of $\Delta$-N interaction and $\Delta$N $\rightarrow$ NN process. The latter has also a large influence well below the pion threshold. The calculation underestimates the experimental cross-section between the quasi-elastic and the delta peaks; this is possibly due to projectile excitation or purely mesonic exchange currents.

PACS
25.55.Kr 2H-,3He- and 4He-induced charge exchange reactions - 14.20.Gk Baryon resonances with S=0 - 24.10.Eq Coupled channel and distorted wave models

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