https://doi.org/10.1140/epja/i2005-10112-5
Original Article
Theoretical description of the pd → pdη reaction near threshold
1
Department of Radiation Sciences, Box 535, S-751 21, Uppsala, Sweden
2
Department of Physics & Astronomy, UCL, WC1E 6BT, London, UK
* e-mail: cw@hep.ucl.ac.uk
Received:
13
June
2005
Accepted:
29
June
2005
Published online:
30
August
2005
The contributions of three different types of driving terms are included in the estimation of the pd → pdη reaction at low energies. Near threshold, it is predicted that a two-step model involving an intermediate pion should be the most important but, as the energy approaches the threshold for η production in the free nucleon-nucleon reaction, a pick-up mechanism with a spectator proton should become dominant. The total cross-sections are underestimated by about a factor of two compared with experimental data but the discrepancies in the angular distributions are more serious, with no sign in the data for the peaks corresponding to the pick-up diagram.
PACS: 25.10.+s Nuclear reactions involving few-nucleon systems – / 13.60.Le Meson production – / 14.40.Aq π, K, and η mesons –
© Società Italiana di Fisica and Springer-Verlag, 2005
