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Study of the decayf 1(1285)→ρ0(770)γ

  • Experimental Physics
  • Published:
Zeitschrift für Physik C Particles and Fields

Abstract

The decayf 1(1285)→ρ0(770)γ was studied at VES spectrometer of IHEP. Clear signal off 1(1285) is seen in the effective mass spectrum of the π+π−γ system in the reaction π−γN→π+π−π−γN at the momentum\(P_{\pi ^ - } = 37 GeV/c\). The branching fraction of decayf 1(1285)→ρ0(770)γ has been found to be

$$BR(f_1 (1285) \to \rho ^0 (770)\gamma ) = (2.8 \pm 0.7(stat) \pm 0.6(syst)) \cdot 10^{ - 2} .$$

The ratio of the helicity amplitudes for ρ0 meson in its rest frame was determined by the analysis of angular distributions:

$$\rho _{00} /\rho _{11} = 3.9 \pm 0.9(stat) \pm 1.0(syst).$$

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Authors and Affiliations

  1. Institute for High Energy Physics, 142284, Serpukhov, Russia

    D. V. Amelin, E. B. Berdnikov, S. I. Bityukov, G. V. Borisov, V. A. Dorofeev, R. I. Dzhelyadin, Yu. P. Gouz, Yu. M. Ivanyushenkov, I. A. Kachaev, A. N. Karyukhin, Yu. A. Khokhlov, G. A. Klyuchnikov, V. F. Konstantinov, S. V. Kopikov, M. E. Kostrikov, V. V. Kostyukhin, A. A. Kriushin, V. D. Matveyev, A. P. Ostankov, D. I. Ryabchikov, O. V. Solovyanov, E. A. Starchenko, N. K. Vishnevsky, E. V. Vlasov & A. M. Zaitsev

  2. Institute of Physics, 380077, T bilisi, Georgia

    T. A. Lomtadze, A. S. Mestvirishvili & E. G. Tskhadadze

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  1. D. V. Amelin
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  2. E. B. Berdnikov
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  3. S. I. Bityukov
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  4. G. V. Borisov
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  5. V. A. Dorofeev
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  6. R. I. Dzhelyadin
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  7. Yu. P. Gouz
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  8. Yu. M. Ivanyushenkov
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  9. I. A. Kachaev
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  10. A. N. Karyukhin
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  11. Yu. A. Khokhlov
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  12. G. A. Klyuchnikov
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  13. V. F. Konstantinov
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  14. S. V. Kopikov
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  15. M. E. Kostrikov
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  16. V. V. Kostyukhin
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  17. A. A. Kriushin
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  18. T. A. Lomtadze
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  19. V. D. Matveyev
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  20. A. S. Mestvirishvili
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  21. A. P. Ostankov
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  22. D. I. Ryabchikov
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  23. O. V. Solovyanov
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  24. E. A. Starchenko
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  25. E. G. Tskhadadze
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  26. N. K. Vishnevsky
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  27. E. V. Vlasov
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  28. A. M. Zaitsev
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VES Collaboration

Additional information

This work has been supported in part by Russian Foundation of Fundamental Research, grant 93-02-15488

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VES Collaboration., Amelin, D.V., Berdnikov, E.B. et al. Study of the decayf 1(1285)→ρ0(770)γ. Z. Phys. C - Particles and Fields 66, 71–76 (1995). https://doi.org/10.1007/BF01496581

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  • DOI: https://doi.org/10.1007/BF01496581

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