Enhanced Lambda Lambda production near threshold in the C-12(K-,K+) reaction

Citation
Jk. Ahn et al., Enhanced Lambda Lambda production near threshold in the C-12(K-,K+) reaction, PHYS LETT B, 444(3-4), 1998, pp. 267-272
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
444
Issue
3-4
Year of publication
1998
Pages
267 - 272
Database
ISI
SICI code
0370-2693(199812)444:3-4<267:ELLPNT>2.0.ZU;2-Q
Abstract
Enhanced production of nn pairs, above levels predicted by a two-step proce ss model, has been observed near threshold (in the mass range 2.23-2.26 GeV /c(2)) in the C-12(K-,K+) reaction at 1.66 GeV/c using a scintillating fibe r target. The differential cross section for nn production in the momentum region 0.95 less than or equal to p(kappa+)less than or equal to l 1.3 GeV/ c averaged over the range 2.3 degrees less than or equal to theta(kappa+)le ss than or equal to 14.7 degrees was found to be 7.6 +/- 1.3 +/- 0.9 mu b/s r, and that for the enhancement was found to be approximately 3 mu b/sr. (C ) 1998 Elsevier Science B.V. All rights reserved.