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

M. J. Corden*, J. D. Dowell, J. Garvey, M. Jobes, I. R. Kenyon, J. Mawson, T. McMahon, I. F. Corbett, R. J. Esterling, N. H. Lipman, P. J. Litchfield, K. C.T.O. Sumorok, G. Alexander, S. Dagan, Y. Gnat, J. Grunhaus, E. H. Bellamy, M. G. Green, N. Harnew, J. B. ListerJ. R. Lister, P. V. March, A. W. Robertson, B. J. Stacey, J. A. Strong, D. H. Thomas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)221-252
Number of pages32
JournalNuclear Physics, Section B
Issue number3
StatePublished - 22 May 1978


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