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Observation of the f 2(1525) resonance in the ηη system produced in K − p interactions at a momentum of 32.5 GeV/c

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Abstract

The reaction K − p → ηη(Λ/Σ0) at a momentum of 32.5 GeV/c was studied for the first time. The experiment was performed by using the GAMS-4π spectrometer at the 70-GeV accelerator of the Institute for High Energy Physics (IHEP, Protvino). The f 2(1525) resonance was observed in the effective-mass spectrum of the ηη system at a low background level. The cross section for f 2(1525) production was measured. The branching ratio for f 2(1525)-meson decay to ηη and K \(\bar K\) was found to be R = 0.119 ± 0.015(stat.) ± 0.036(syst.), which is in agreement with the world-average value.

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Authors and Affiliations

  1. Institut Interuniversitaire des Science Nucléares, Be-1050, Bruxelles, Belgium

    F. Binon & J. P. Stroot

  2. Institute of High Energy Physics, Protvino, Moscow oblast, 142284, Russia

    A. M. Blick, S. V. Donskov, V. N. Kolosov, V. M. Kut’in, M. E. Ladygin, A. A. Lednev, V. A. Lishin, Yu. V. Mikhailov, V. A. Polyakov, V. D. Samoylenko, A. E. Sobol, V. P. Sugonyaev & G. V. Khaustov

  3. National Laboratory for High Energy Physics, KEK, 1-1 Oho, Tsukuba-shi, Ibaraki-ken, 305, Japan

    S. Inaba, T. Tsuru & Y. Fujii

  4. Laboratoire d’Annecy-le-Vieux de Physique des Particules, LAPP, BP 110, F-74941, Annecy-le-Vieux CEDEX, France

    J. P. Peigneux

  5. Engineering Faculty, University of Miyazaki, Miyazaki, Japan

    K. Takamatsu

Authors
  1. F. Binon
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  2. A. M. Blick
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  3. S. V. Donskov
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  4. S. Inaba
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  5. V. N. Kolosov
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  6. V. M. Kut’in
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  7. M. E. Ladygin
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  8. A. A. Lednev
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  9. V. A. Lishin
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  10. Yu. V. Mikhailov
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  11. J. P. Peigneux
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  12. V. A. Polyakov
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  13. V. D. Samoylenko
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  14. A. E. Sobol
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  15. J. P. Stroot
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  16. V. P. Sugonyaev
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  17. K. Takamatsu
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  18. T. Tsuru
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  19. Y. Fujii
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  20. G. V. Khaustov
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Corresponding author

Correspondence to V. N. Kolosov.

Additional information

Original Russian Text © F. Binon, A.M. Blick, S.V. Donskov, S. Inaba, V.N. Kolosov, V.M. Kut’in, M.E. Ladygin, A.A. Lednev, V.A. Lishin, Yu.V. Mikhailov, J.P. Peigneux, V.A. Polyakov, V.D. Samoylenko, A.E. Sobol, J.P. Stroot, V.P. Sugonyaev, K. Takamatsu, T. Tsuru, Y. Fujii, G.V. Khaustov, 2007, published in Yadernaya Fizika, 2007, Vol. 70, No. 10, pp. 1758–1761.

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Binon, F., Blick, A.M., Donskov, S.V. et al. Observation of the f 2(1525) resonance in the ηη system produced in K − p interactions at a momentum of 32.5 GeV/c . Phys. Atom. Nuclei 70, 1713–1716 (2007). https://doi.org/10.1134/S1063778807100055

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  • DOI: https://doi.org/10.1134/S1063778807100055

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