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

Authors

Aitala, EM Amato, S Anjos, JC Appel, JA Ashery, D Banerjee, S Bediaga, I Blaylock, G Bracker, SB Burchat, PR Burnstein, RA Carter, T Carvalho, HS Copty, NK Cremaldi, LM Darling, C Denisenko, K Devmal, S Fernandez, A Fox, GF Gagnon, P Gobel, C Gounder, K Halling, AM Herrera, G Hurvits, G James, C Kasper, PA Kwan, S Langs, DC Leslie, J Lundberg, B Magnin, J MayTal-Beck, S Meadows, B Neto, JRTD Milburn, RH de Miranda, JM Napier, A Nguyen, A d'Oliveira, AB O'Shaughnessy, K Peng, KC Perera, LP Purohit, MV Quinn, B Radeztsky, S Rafatian, A Reay, NW Reidy, JJ dos Reis, AC Rubin, HA Sanders, DA Santha, AKS Santoro, AFS Schwartz, AJ Sheaff, M Sidwell, RA Simao, FRA Slaughter, AJ Sokoloff, MD Solano, J Stanton, NR Stenson, K Summers, DJ Takach, S Thorne, K Tripathi, AK Watanabe, S Weiss-Babai, R Wiener, J Witchey, N Wolin, E Yi, D Yoshida, S Zaliznyak, R Zhang, C

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

Categorie Soggetti

Physics

Journal title

PHYSICS LETTERS B

ISSN journal

03702693 → 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.