Lambda production near threshold in central nucleus-nucleus collisions

  • 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

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Author:John W. HarrisORCiDGND, Andres SandovalORCiD, Reinhard StockGND, Herbert Ströbele, Rainer Arno Ernst Renfordt, Jorge V. Geaga, Howel G. Pugh, S Schroeder, Kevin L. Wolf, Ángel Dacal
Parent Title (German):Physical review letters
Document Type:Article
Date of Publication (online):2005/09/20
Year of first Publication:1981
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/09/20
Page Number:4
First Page:229
Last Page:232
Source:Phys. Rev. Lett. 47, 229-232 (1981), ©1981 The American Physical Society,
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht