Abstract
A sample of Λ's produced in 2 A GeV 58Ni + natCu collisions has been obtained with the EOS Time Projection Chamber at the Bevalac. Low background in the invariant mass distribution allows for the unambiguous demonstration of Λ directed flow. The A mT spectrum at mid-rapidity has the characteristic shoulder-arm shape of particles undergoing radial transverse expansion. A linear dependence of A multiplicity on impact parameter is observed, from which a total Λ + ΣO production cross section of 112 + 24 mb is deduced. Detailed comparisons with the ARC and RVUU models are made.
Original language | English (US) |
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Pages (from-to) | 12-19 |
Number of pages | 8 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 440 |
Issue number | 1-2 |
DOIs | |
State | Published - Nov 12 1998 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics