Search for direct CP violation in non-leptonic decays of charged Xi and Lambda hyperons

Journal Article · Mon Dec 04 00:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.85.4860· OSTI ID:788019

Luk, K B; Diehl, H T; Duryea, J; Guglielmo, G; Heller, K; Ho, P M; James, C; Johns, K; Longo, M J; Rameika, R; Teige, S; Thomson, G B; Zou, Y

A search for direct CP violation in the non-leptonic decays of hyperons has been performed. In comparing the product of the decay parameters, {alpha}{sub {Xi}} {alpha}{sub {Lambda}}, in terms of an asymmetry parameter, A{sub {Xi}{Lambda}}, between hyperons and anti-hyperons in the charged {Xi} {yields} {Lambda}{pi} and {Lambda} {yields} p{sub {pi}} decay sequence, we found no evidence of direct CP violation. The parameter A{sub {Xi}{Lambda}} was measured to be 0.012 {+-} 0.014.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Director, Office of Science. Office of High Energy and Nuclear Physics. Division of High Energy Physics (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 788019
• Report Number(s): LBNL-46257; PRLTAO; R&D Project: 415601; TRN: US0110639
• Journal Information: Physical Review Letters, Vol. 85, Issue 23; Other Information: Journal Publication Date: 4 December 2000; PBD: 4 Dec 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
DECAY
CP INVARIANCE
LAMBDA BARYONS
XI BARYONS
DATA
CP VIOLATION HYPERON