TY - JOUR A1 - Harris, John W. A1 - Sandoval, Andres A1 - Stock, Reinhard A1 - Ströbele, Herbert A1 - Renfordt, Rainer Arno Ernst A1 - Geaga, Jorge V. A1 - Pugh, Howel G. A1 - Schroeder, S A1 - Wolf, Kevin L. A1 - Dacal, Ángel T1 - Lambda production near threshold in central nucleus-nucleus collisions T2 - Physical review letters N2 - Lambda 's produced in central collisions of 40Ar+KC1 at 1.8-GeV/u incident energy were detected in a streamer chamber by their charged-particle decay. For central collisions with impact parameters b<2.4 fm the Lambda production cross section is 7.6±2.2 mb. A calculation in which Lambda production occurs in the early stage of the collision qualitatively reproduces the results but underestimates the transverse momenta. An average Lambda polarization of -0.10±0.05 is observed. PACS numbers: 25.70 Bc Y1 - 2005 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3940 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-15500 VL - 4 SP - 229 EP - 232 ER -