Polarization of Λ0 hyperons in K-p interactions

Haupt, T. ; Baba, P. V. K. S. ; Banerjee, S. ; Bardadin-Otwinowska, M. ; Barnham, K. W. J. ; Coghen, T. ; Devanand, A. ; Dziunikowska, K. ; Ganguli, S. N. ; Gerhold, H. ; et., al (1985) Polarization of Λ0 hyperons in K-p interactions Zeitschrift für Physik C Particles and Fields, 28 (1). pp. 57-63. ISSN 0170-9739

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Related URL: http://dx.doi.org/10.1007/BF01550249


The polarization of the Λ0 hyperon produced inK - p interactions at 110 GeV/c shows a strong dependence on the transverse momentum p t of the Λ0 and no significant dependence on x F . The polarization for large p t is negative in the proton hemisphere and positive in the kaon hemisphere. In theproton hemisphere it is compared with the results of other K - p experiments at lower energies as well as with reactions induced by p, p-, π+, π- and K +. The comparison is performed separately for K - p→Λ 0 KK+pions and K - p→Λ 0+pions showing an analogous behaviour in the former channel. In the kaon hemisphere the comparison with other K - p experiments at lower energy shows a p t -dependence of the Λ0 polarization which changes with energy. The experimental results are discussed in terms of current quark models and of the Mueller-Regge phenomenology. The model predictions reproduce the trend of the data qualitatively well but fail in describing some details.

Item Type:Article
Source:Copyright of this article belongs to Springer-Verlag.
ID Code:15026
Deposited On:13 Nov 2010 13:07
Last Modified:17 May 2011 10:26

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