Λ Hyperons Produced in Central Nucleus-Nucleus Interactions at 4.5 GeV/c Momentum per Incident Nucleon

M. Anikina, M. Gaździcki, A. Golokhvastov, L. Goncharova, K. Iovchev, S. Khorozov, E. Kuznetzova, J. Lukstins, E. Okonov, T. Ostanievich, S. Sidorin, G. Vardenga, O. Balea, N. Nikirovich, T. Ponta, L. Chkhaidze, T. Dzobava, M. Despotashvili, I. Tuliani, E. Khusaimov, N. Nurgozin, B. Suleimenov, E. Skrzypczak, and T. Tymieniecka
Phys. Rev. Lett. 50, 1971 – Published 20 June 1983
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Abstract

Transverse momenta and rapidities of Λ's produced in central nucleus-nucleus collisions at 4.5 GeV/c·u (C-C,...,O-Pb) were studied and compared with those from inelastic He-Li interactions at the same incident momentum. Polarization of the Λ hyperons was found to be consistent with zero (αP=0.06=0.11 for Λ's from central collisions). An upper limit of the Λ¯Λ production ratio was estimated to be less than 4.5×103. The experiment was performed in a triggered streamer chamber.

  • Received 26 January 1983

DOI:https://doi.org/10.1103/PhysRevLett.50.1971

©1983 American Physical Society

Authors & Affiliations

M. Anikina, M. Gaździcki*, A. Golokhvastov, L. Goncharova, K. Iovchev, S. Khorozov, E. Kuznetzova, J. Lukstins, E. Okonov, T. Ostanievich, S. Sidorin, and G. Vardenga

  • Joint Institute of Nuclear Research, 101 000 Dubna, U.S.S.R.

O. Balea, N. Nikirovich, and T. Ponta

  • Central Institute of Physics, Bucharest, Romania

L. Chkhaidze, T. Dzobava, M. Despotashvili, and I. Tuliani

  • Institute of High Energy Physics, Tbilisi State University, 380043 Tbilisi, U.S.S.R.

E. Khusaimov, N. Nurgozin, and B. Suleimenov

  • Institute of High Energy Physics, Kazakhs SSR Academy of Sciences, 480 082 Alma-Ata, U.S.S.R.

E. Skrzypczak and T. Tymieniecka

  • Institute of Experimental Physics, University of Warsaw, 00-681 Warsaw, Poland

  • *On leave from the Institute of Experimental Physics, University of Warsaw, 00-681 Warsaw, Poland.

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Issue

Vol. 50, Iss. 25 — 20 June 1983

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