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The reaction Pomeron-Pomeron →π + π − and an unusual production mechanism for thef 2 (1270)

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Zeitschrift für Physik C Particles and Fields

Abstract

Data are presented on Pomeron-Pomeron interactions which produce a centralπ + π − system in proton-proton collisions at\(\sqrt s = 62 GeV\) at the CERN Intersecting Storage Rings. This process may favor the production of gluonic bound states. A partial-wave analysis of theπ + π − system shows evidence for the production of the statesf 0(975),f 0(1400), andf 2(1270). The fitted mass for thef 2(1270) is about 50 MeV below the world average. In addition, the production mechanism for thef 2(1270) is uniquely different from that for the other final states in that there is a correlation between the outgoing protons. this is consistent with a picture of two-gluon exchange with thef 2(1270) produced by gluon fusion, and could indicate that thef 2(1270) has a glueball component.

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Author notes

  1. W. Herr & T. Lohse

    Present address: CERN, European Organization for Nuclear Research, Geneva, Switzerland

  2. A. Breakstone

    Present address: University of Hawaii, USA

  3. H. Frehse

    Present address: CONVEX, Zürich, Switzerland

  4. W. Geist

    Present address: CRN Strasbourg, France

  5. M. Gorbics

    Present address: LeCroy Research Systems, Chestnut Ridge, NY, USA

  6. M. Heiden

    Present address: DEC, Kaufbeuren, Federal Republic of Germany

  7. L. D. Isenhower

    Present address: Abilene Christian University, Texas, USA

  8. T. Nakada

    Present address: Paul Scherer Institute, Villigen, Switzerland

  9. M. Panter

    Present address: Max Planck Institute, Heidelberg, Federal Republic of Germany

  10. M. Schmelling

    Present address: University of Mainz, Federal Republic of Germany

  11. J. D. Skeens

    Present address: Rice University, Houston, Texas, USA

  12. R. Yeung

    Present address: CALTECH, Pasadena, California, USA

Authors and Affiliations

  1. Ames Laboratory and Physics Department, Iowa State University, Ames, USA

    A. Breakstone, H. B. Crawley, A. Firestone, M. Gorbics, L. D. Isenhower, J. W. Lamsa, R. A. Leacock, W. T. Meyer & J. D. Skeens

  2. Istituto di Fisica dell'Universita and INFN, Bologna, Italy

    R. Campanini, G. M. Dallavalle, M. M. Deninno, G. Giacomelli, F. Rimondi & G. P. Siroli

  3. CERN, European Organization for Nuclear Research, Geneva, Switzerland

    D. Drijard, F. Fabbri, H. G. Fischer, H. Frehse, W. Geist, M. Heiden, G. Mornacchi, M. Panter, O. Ullaland & R. Yeung

  4. Institut für Physik der Universität, Dortmund, Federal Republic of Germany

    T. Lohse, R. Mankel, K. Rauschnabel, M. Schmelling & D. Wegener

  5. Institut für Hochenergiephysik, Heidelberg, Federal Republic of Germany

    P. Hanke, W. Herr, E. E. Kluge, T. Nakada, A. Putzer & B. Rensch

  6. University and Institute for Nuclear Research, Warsaw, Poland

    K. Doroba, R. Gokieli, R. Sosnowski & M. Szczekowski

Authors
  1. A. Breakstone
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  2. R. Campanini
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  3. H. B. Crawley
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  4. G. M. Dallavalle
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  5. M. M. Deninno
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  6. K. Doroba
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  7. D. Drijard
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  8. F. Fabbri
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  9. A. Firestone
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  10. H. G. Fischer
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  11. H. Frehse
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  12. W. Geist
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  13. G. Giacomelli
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  14. R. Gokieli
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  15. M. Gorbics
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  16. P. Hanke
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  17. M. Heiden
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  18. W. Herr
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  19. L. D. Isenhower
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  20. E. E. Kluge
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  21. J. W. Lamsa
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  22. R. A. Leacock
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  23. T. Lohse
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  24. R. Mankel
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  25. W. T. Meyer
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  26. G. Mornacchi
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  27. T. Nakada
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  28. M. Panter
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  29. A. Putzer
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  30. K. Rauschnabel
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  31. B. Rensch
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  32. F. Rimondi
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  33. M. Schmelling
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  34. G. P. Siroli
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  35. J. D. Skeens
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  36. R. Sosnowski
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  37. M. Szczekowski
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  38. O. Ullaland
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  39. D. Wegener
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  40. R. Yeung
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Breakstone, A., Campanini, R., Crawley, H.B. et al. The reaction Pomeron-Pomeron →π + π − and an unusual production mechanism for thef 2 (1270). Z. Phys. C - Particles and Fields 48, 569–575 (1990). https://doi.org/10.1007/BF01614690

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  • DOI: https://doi.org/10.1007/BF01614690

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