Polarization of leading Λ hyperons produced by neutrons on target nuclei.

Autor: Vlasova, M. O., Galanina, N. D., Demidov, V. S., Nedosekin, A. A., Ostapchuk, A. Ya., Sadykov, V. A., Khaldeeva, N. A., Endalov, A. L., Martem’yanov, M. A., Ponosov, A. K., Sergeev, F. M., Tel’nov, M. Yu.
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Zdroj: JETP Letters; 8/25/96, Vol. 64 Issue 4, p258, 5p
Abstrakt: The polarization of the leading Λ hyperons produced on carbon and lead target nuclei by 4–10 GeV neutrons in the angle range Θ<8.5° with respect to the beam and with only neutral-particle accompaniment is measured: <Π>=-0.096±0.018 for C and <Π>=-0.128±0.047 for Pb. The dependence of the polarization on the transverse momentum and the Feynman variable is measured. The normalized invariant cross section as a function of p⊥2 is found to be approximated by the function A exp(-Bp⊥2), where the parameter B is independent of the kind of nucleus (B=8.71±0.09 (GeV/c)-2 for carbon and B=8.83 ±0.18 (GeV/c)-2 for lead). © 1996 American Institute of Physics. [ABSTRACT FROM AUTHOR]
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