Elsevier

Nuclear Physics A

Volume 638, Issues 3–4, 17 August 1998, Pages 729-746
Nuclear Physics A

π+π+π± on deuterium at Tπ+ = 283 MeV

https://doi.org/10.1016/S0375-9474(98)00424-2Get rights and content

Abstract

New experimental results on the π+dπ+πpp and π+dπ+π+nn reactions at Tπ1 = 283 MeV are presented. In-plane coincidence data were taken with the CHAOS spectrometer using pions from the M11 channel at TRIUMF. Because of the quasi-free nature of the pion-production reaction, the present study is equivalent to studying the elementary π+Nπ+π±N reactions on protons and neutrons simultaneously. These exclusive measurements provide a set of many-fold differential cross sections which are an ideal testing ground for microscopic models describing the πNππN reaction. The interpretation of the data relies on a model which is based on effective chiral Lagrangians to describe the piece of the reaction that includes only π's and N's, and on effective Lagrangians to account for intermediate Δ's and N's. The measured many-fold differential cross sections are used to constrain some parameters of the model (ξ, fΔ, C, gN Δπ and gN). Finally, the π+π± invariant mass distributions display no evidence of strongly interacting pion pairs in either the I = J = 0 or the I = 2J = 0 channels.

References (36)

  • D. Počanić

    Phys. Rev. Lett.

    (1994)
  • R.A. Arndt et al.

    Phys. Rev. D

    (1979)
  • D.M. Manley et al.

    Phys. Rev. D

    (1984)
  • H. Burkhardt et al.

    Phys. Rev. Lett.

    (1991)
    H. Burkhardt et al.

    πN Newsletter

    (March 1997)
  • E. Piasetzky

    Phys. Rev. Lett.

    (1984)
    J. Lichtenstadt

    Phys. Rev. C

    (1986)
  • F. Bonutti

    Phys. Rev. C

    (1997)
  • E. Oset et al.

    Nucl. Phys. A

    (1985)
  • D. Vetterli

    Nucl. Phys. A

    (1992)
  • G.R. Smith

    Nucl. Instr. and Meth. in Phys. Res. A

    (1995)
  • F. Bonutti et al.

    Nucl. Instr. and Meth. in Phys. Res. A

    (1993)
  • S. Weinberg

    Phys. Rev. Lett.

    (1966)
    S. Weinberg

    Phys. Rev.

    (1968)
    L. Chang

    Phys. Rev.

    (1967)
  • M.G. Olsson et al.

    Phys. Rev. Lett.

    (1968)
    M.G. Olsson et al.

    Phys. Rev. D

    (1972)
    M.G. Olsson et al.

    Phys. Rev. Lett.

    (1977)
  • J. Gasser et al.

    Phys. Rep.

    (1982)
    J. Gasser et al.

    Phys. Lett. B

    (1983)
    J. Gasser et al.

    Phys. Lett. B

    (1983)
  • J. SternH. Leutwyler

    Nucl. Phys. A

    (1997)
  • M. Sevior

    Phys. Rev. Lett.

    (1991)
    M. Sevior

    Phys. Rev. D

    (1993)
  • J. Lowe

    Phys. Rev. C

    (1991)
  • A.A. Bolokhov et al.

    Nucl. Phys. A

    (1991)
    V.V. Vereshagin et al.

    Nucl. Phys. A

    (1995)
  • This article contains a large compilation of total cross sections for the πN → ππN reaction. For completeness the...
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