Asymmetries in the production of Lambda(0), Xi(-), and Omega(-) hyperons in 500 GeV/c pi(-)-nucleon interactions

Citation
Em. Aitala et al., Asymmetries in the production of Lambda(0), Xi(-), and Omega(-) hyperons in 500 GeV/c pi(-)-nucleon interactions, PHYS LETT B, 496(1-2), 2000, pp. 9-18
Citations number
31
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
0370-2693 → ACNP
Volume
496
Issue
1-2
Year of publication
2000
Pages
9 - 18
Database
ISI
SICI code
0370-2693(200012)496:1-2<9:AITPOL>2.0.ZU;2-Q
Abstract
Using data from Fermilab fixed-target experiment E791, we have measured par ticle-antiparticle production asymmetries for Lambda (0), Xi (-), and Omega (-) hyperons in pi (-) -nucleon interactions at 500 GeV/c. The asymmetries are measured as functions of Feynman-x (x(F)) and p(T)(2) over the ranges -0.12 less than or equal to x(F) less than or equal to 0.12 and 0 less than or equal to p(T)(2) less than or equal to 4 (GeV/c)(2). We find substantia l asymmetries, even at x(F) = 0. We also observe leading-particle-type asym metries which qualitatively agree with theoretical predictions. (C) 2000 El sevier Science B.V. All rights reserved.