Elsevier

Nuclear Physics B

Volume 69, Issue 1, 28 January 1974, Pages 185-204
Nuclear Physics B

A study of ππ scattering from πp interactions at 3.93 GeV/c

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Abstract

A modified Chew-Low extrapolation procedure is applied to the reaction πp→Δ++ππ to extract the I = 2 ππ elastic cross sections from threshold to 1260 MeV. The predictions of the one-pion-exchange model are used to estimate the contributions from background processes of the type πp→Δ0ϱ0. The moments of the ππ angular distribution are also extrapolated to the pion pole and a phase shift analysis performed. The s-wave inelasticity is constrained using information on the inelastic cross section coming from six-body final states. The magnitude of the s-wave phase shift at the K0 mass is found to be 7.20 ± 1.00, increasing to 26.20 ± 2.50 at 1 GeV. d- and g-waves contribute above about 900 MeV, but the corresponding phase shifts are small compared with the s-wave. All three phase shifts have the same sign.

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  • Cited by (0)

    CERN Fellow from Imperial College, London.

    ∗∗

    On leave of absence from Junta de Energià Nuclear, Madrid.

    ∗∗∗

    Now at the Institute of Experimental Physics, Warsaw University, Warsaw.

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