Elsevier

Nuclear Physics B

Volume 137, Issue 3, 22 May 1978, Pages 221-252
Nuclear Physics B

New data on the π+ π− angular distribution in the mass range 0.8 − 2.2 GeV/c2

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Abstract

An experiment has been performed on the Omega spectrometer to study the channel π−p → π+π−n at 12 and 15 GeV/. The π+π− angular distribution has been studied in the π+π− invariant-mass region 0.8−2.2 GeV/c2, for events with four-momentum transfer squared from proton to neutron in the range −0.02 to −0.15 (GeV/c)2. The spherical harmonic moments of the angular distribution are presented. Up to a mass of 1.7 GeV/c2 the moments agree with previous experiments. At higher masses Y70, Y80 and Y90 are non-zero and indicate the presence of ππ amplitudes with spin greater than 3.

References (18)

  • W.D. Apel

    Phys. Lett.

    (1975)
  • W. Blum

    Phys. Lett.

    (1975)
  • H. Wind

    Nucl. Instr.

    (1970)
  • G. Grayer

    Nucl. Phys.

    (1974)
  • S.D. Protopopescu

    Phys. Rev.

    (1973)
  • J. Dowell

    Preliminary analysis of π−p → π+π−n at 12 GeV/c from Omega

  • O. Gildermeister
  • J. Garvey
  • J.A. Strong et al., Nucl. Instr.,...
There are more references available in the full text version of this article.

Cited by (3)

  • A study of the reaction π<sup>-</sup>p → π<sup>+</sup>π<sup>-</sup>n at 100 and 175 GeV/c

    1984, Nuclear Physics, Section B

  • An amplitude analysis of ππ scattering from new data on the reaction π<sup>-</sup>p→π<sup>+</sup>π<sup>-</sup>n

    1979, Nuclear Physics, Section B

  • Observation of the D, E and δ mesons in π<sup>-</sup>p interactions at 12 and 15 GeV/c

    1978, Nuclear Physics, Section B
∗∗

Now at Philco-Ford, Philadelphia, USA

∗

Supported by the Israel Academy of Science and Humanities, The Israel Commission for Basic Research.

∗∗∗

Now at the Rutherford Laboratory.

☆

Now at CERN, Geneva, Switzerland.

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