Lambda polarization in pp -> pΛK^+ π^+π^-π^+π^-

Details Lambda polarization in pp -> pΛK^+ π^+π^-π^+π^- Lambda polarization in pp -> pΛK^+ π^+π^-π^+π^-

2000-05-21

arxiv.org/abs/hep-ph/0005207v1

J.Phys. G26 (2000) L111-L116

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages with 3 figures, submitted to J. Phys. G

Scientific paper

We show that there is a correlation between the invariant mass of the produced \Lambda K^+, \Lambda K^+\pi^+\pi^- or \Lambda K^+ \pi^+\pi^-\pi^+\pi^- system in the exclusive reaction pp\to p\Lambda K^+\pi^+\pi^-\pi^+\pi^- and the longitudinal or transverse momentum of $\Lambda$. Together with the longitudinal and transverse momentum dependence of Lambda polarization observed in inclusive reactions, such a correlation implies a dependence of Lambda polarization on these invariant masses. The qualitative features of this dependence are consistent with the recent observation by E766 collaboration at BNL. A quantitative estimation has been made using an event generator for $pp$ collisions. A detailed comparison with the data is made.

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