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Inclusive Λ production in\(\bar p\) p interactions at 3.0, 3.5, 4.0 and 4.5 GeV/c

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Zeitschrift für Physik C Particles and Fields

Abstract

Inclusive Λ production in\(\bar p\) p interactions at 3.0, 3.5, 4.0 and 4.5 GeV/c is studied. The inclusive cross sections for Λ and Λ\(\bar \Lambda \) production are measured. The differential cross sections as functions ofx, y, andP 2 T are given for each beam momentum. It is found that the contribution of indirect production of Λ from resonance decay is considerably enhanced in the region of higher missing mass against Λ. The negative polarization is observed for Λ with largerP T and lower missing mass, and is found to be mainly from two body reactions. Inclusive cross sections for∑ ±(1385) production and the fraction of indirect Λ from∑ ±(1385) decay are measured. The ratio between the cross sections for∑ +(1385) and∑ −(1385) productions is found to be almost constant for wide range of beam momenta.

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Author notes

  1. J. MacNaughton

    Present address: Institut für Hochenenergiephysik, A-1050, Wien, Austria

  2. A. Suzuki

    Present address: Department of Physics, University of Tokyo, 113, Tokyo, Japan

Authors and Affiliations

  1. Department of Physics, Nara Women's University, 630, Nara, Japan

    S. Noguchi, N. Fujiwara & S. Yamashita

  2. National Laboratory for High Energy Physics, KEK, Oho-machi, Tsukuba-gun, 305, Ibaraki-ken, Japan

    M. Fukawa, H. Kichimi, E. Kohriki, J. MacNaughton, F. Ochiai, T. Sato, R. Sugahara, A. Suzuki, K. Takahashi & Y. Yoshimura

  3. College of Liberal Arts, Kobe University, 650, Kobe, Japan

    A. Ono

  4. Department of Physics, Niigata University, 950-21, Niigata, Japan

    K. Miyano

  5. Department of Physics, Osaka City University, 558, Osaka, Japan

    M. Chikawa, O. Kusumoto & T. Okusawa

  6. Graduate School of Science and Technology, Kobe University, Nada, 657, Kobe, Japan

    Y. Noguchi

Authors
  1. S. Noguchi
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  2. N. Fujiwara
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  3. M. Chikawa
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  4. M. Fukawa
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  5. H. Kichimi
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  6. E. Kohriki
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  7. O. Kusumoto
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  8. J. MacNaughton
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  9. K. Miyano
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  10. Y. Noguchi
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  11. F. Ochiai
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  12. T. Okusawa
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  13. A. Ono
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  14. T. Sato
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  15. R. Sugahara
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  16. A. Suzuki
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  17. K. Takahashi
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  18. S. Yamashita
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  19. Y. Yoshimura
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Noguchi, S., Fujiwara, N., Chikawa, M. et al. Inclusive Λ production in\(\bar p\) p interactions at 3.0, 3.5, 4.0 and 4.5 GeV/c. Z. Phys. C - Particles and Fields 24, 297–304 (1984). https://doi.org/10.1007/BF01410368

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  • DOI: https://doi.org/10.1007/BF01410368

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