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Study of the πpi-system with the GAMS-4000 spectrometer at 100 GeV/c

GAMS Collaboration: IHEP1–IISN2–LANL3–LAPP4–KEK5 (Joint CERN–IHEP experiment)

  • Hadron physics
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The European Physical Journal A - Hadrons and Nuclei Aims and scope Submit manuscript

Abstract.

The πpi-system produced in the charge exchange π−p-reaction at 100 GeV/c has been studied. The experiment was performed at the CERN SPS accelerator with the multiphoton hodoscope spectrometer GAMS-4000. A partial wave analysis was carried out in the mass range from 0.8 GeV to 3.0 GeV at −t < 0.2 (GeV/c)2 with the S, D, G and J waves. The S-wave exhibits rather complicated behaviour with a series of four bumps separated by three dips, at 1 GeV, 1.5 GeV and 2 GeV, which give the evidence for several scalar resonances. Clear peaks corresponding to the f2(1270), f4(2050) and f6(2510) mesons are seen in the higher waves. All the three mesons are produced via a dominating one pion t-channel exchange. The parameters and production cross sections of these mesons are measured.

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Authors and Affiliations

  1. Institute for High Energy Physics, Protvino 142284, Russia, , , , , , RU

    S.V. Donskov, A.V. Inyakin, V.A. Kachanov, G.V. Khaustov, A.A. Kondashov, A.A. Lednev, V.A. Lishin, Yu.D. Prokoshkin, S.A. Sadovsky, V.D. Samoylenko, P.M. Shagin & V.P. Sugonyaev

  2. Institut Interuniversitaire des Sciences Nucléaires, B-1050 Brussels, Belgium, , , , , , BE

    C. Bricman & J.P. Stroot

  3. Los Alamos National Laboratory, Los Alamos, NM 87544, USA, , , , , , US

    D. Alde & E.A. Knapp

  4. Laboratoire d'Annecy de Physique des Particules, F-74019 Annecy-le-Vieux, France, , , , , , FR

    M. Gouanère, J.P. Peigneux, M. Poulet & A.V. Singovsky

  5. National Laboratory for High Energy Physics — KEK, Tsukuba, Ibaraki 305, Japan, , , , , , JP

    S. Inaba & T. Tsuru

  6. CERN, CH-1211 Geneva 23, Switzerland, , , , , , CH

    M. Boutemeur

  7. Université Libre de Bruxelles, CP 229, B-1050 Brussels, Belgium, , , , , , BE

    F.G. Binon

  8. Miyazaki University, Miyazaki 889-21, Japan, , , , , , JP

    K. Takamatsu

Authors
  1. D. Alde
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  2. F.G. Binon
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  3. M. Boutemeur
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  4. C. Bricman
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  5. S.V. Donskov
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  6. M. Gouanère
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  7. A.V. Inyakin
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  8. S. Inaba
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  9. V.A. Kachanov
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  10. G.V. Khaustov
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  11. E.A. Knapp
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  12. A.A. Kondashov
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  13. A.A. Lednev
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  14. V.A. Lishin
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  15. J.P. Peigneux
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  16. M. Poulet
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  17. Yu.D. Prokoshkin
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  18. S.A. Sadovsky
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  19. V.D. Samoylenko
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  20. P.M. Shagin
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  21. A.V. Singovsky
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  22. J.P. Stroot
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  23. V.P. Sugonyaev
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  24. K. Takamatsu
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  25. T. Tsuru
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Additional information

Received: 26 July 1998

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Alde, D., Binon, F., Boutemeur, M. et al. Study of the πpi-system with the GAMS-4000 spectrometer at 100 GeV/c . EPJ A 3, 361–371 (1998). https://doi.org/10.1007/s100500050190

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  • DOI: https://doi.org/10.1007/s100500050190

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