Pion production in dpdNπ reactions with deuteron projectiles

J. Greiff et al.
Phys. Rev. C 62, 064002 – Published 13 November 2000
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Abstract

Kinematically complete events have been studied for the reactions dpdpπ0 and dpdnπ+ at projectile energies between 437 and 559 MeV. The measurement covers a range of pion momenta η=pπ,c.m.max/mπc from near the production threshold (η=0.32) to η=0.86 close to the NNNNπ threshold. The measurements were performed at the CELSIUS storage ring with the PROMICE/WASA setup. Angular and spectral distributions of the charged ejectiles as well as total cross sections are decomposed into the fractions that can be attributed to a quasifree NNdπ process with a spectator nucleon, and to a process involving all three nucleons. The quasifree contribution increases with energy and dominates from the NNNNπ threshold on. The results are compared to calculations with a spectator model with and without dp final state interactions.

  • Received 16 June 2000

DOI:https://doi.org/10.1103/PhysRevC.62.064002

©2000 American Physical Society

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Vol. 62, Iss. 6 — December 2000

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