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Backward production of mesons associated withΔ ++(1232) inπ + p interactions at 20 GeV/c

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Zeitschrift für Physik C Particles and Fields

Abstract

We have analyzed backward meson production inπ + p reactions at 20GeV/c, which were measured in the CERN Ω spectrometer triggered by a fast proton (p f ), in experiment WA56. Production via baryon exchange of quasi-two-body final statesΔ ++ (1232)ρ 0 (770),Δ ++ (1232)f 2 (1270), andΔ ++ (1232)ρ 03 (1690) is clearly identified. The density matrix elements of meson resonances and ofΔ ++ (1232) are analyzed. We have observed also the reactionsπ + p→Δ ++ (1232)π 0 andπ + p→Δ ++ (1232)ω in thep f π + π 0 andp f π + π + π − π 0 final states.

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Authors and Affiliations

  1. Yerevan Physics Institute, Br. Alikhanian st. 2, SU-375036, Yerevan, Armenia, USSR

    N. Z. Akopov, A. A. Grigoryan & V. V. Karapetyan

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

    L. Dorsaz & P. Sonderegger

  3. IFIC, University of Valencia, CSIC, Burjasot, E-46100, Valencia, Spain

    A. Ferrer

  4. Institute of Theoretical and Experimental Physics, SU-117 259, Moscow, USSR

    V. F. Perepelitsa, V. I. Mikhailichenko, S. Ya. Nikitin & A. S. Zhokin

Authors
  1. V. F. Perepelitsa
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  2. N. Z. Akopov
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  3. L. Dorsaz
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  4. A. Ferrer
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  5. A. A. Grigoryan
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  6. V. V. Karapetyan
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  7. V. I. Mikhailichenko
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  8. S. Ya. Nikitin
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  9. P. Sonderegger
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  10. A. S. Zhokin
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Perepelitsa, V.F., Akopov, N.Z., Dorsaz, L. et al. Backward production of mesons associated withΔ ++(1232) inπ + p interactions at 20 GeV/c. Z. Phys. C - Particles and Fields 50, 395–404 (1991). https://doi.org/10.1007/BF01551451

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  • DOI: https://doi.org/10.1007/BF01551451

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