Study of the π0π0 system in pp central collisions at 450 GeV/c

D. Alde, R. Bellazzini, F. G. Binon, M. Boutemeur, A. Brez, C. Bricman, S. V. Donskov, M. Gouanère, S. Inaba, A. V. Inyakin, T. Ishida, H. Kawai, G. V. Khaustov, T. Kinashi, M. Kobayashi, E. A. Knapp, A. A. Kondashov, A. V. Kulik, G. L. Landsberg, A. A. LednevV. A. Lishin, M. M. Massai, T. Nakagawa, T. Nakamura, J. P. Peigneux, S. A. Polovnikov, V. A. Polyakov, M. Poulet, Yu D. Prokoshkin, S. A. Sadovsky, V. D. Samoylenko, P. M. Shagin, H. Shimizu, A. V. Shtannikov, A. V. Singovsky, J. P. Stroot, V. P. Sugonyaev, K. Takamatsu, M. R. Torquati, T. Tsuru, Y. Yasu

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58 Citations (Scopus)


The effective mass spectrum of π0 pairs produced in pp central collisions (pp → pfπ0π0ps) at 450 GeV/c, √s = 29 GeV, below 1 GeV differs from that observed in peripheral charge exchange reactions. In particular, there is a large number of events between ππ-threshold and 1 GeV, that interfere with f0(980) destructively. The possible existence of a broad S-wave state is suggested.

Original languageEnglish
Pages (from-to)350-356
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
Publication statusPublished - 1997 Apr 3
Externally publishedYes


  • Double pomeron exchange
  • pp central collision
  • ππ events below 1 GeV

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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