Published April 5, 2000
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Examining CP symmetry in strange baryon decays
Creators
- Luk, Kam-Biu
- Burnstein, R.A.
- Chakravorty, A.
- Chan, A.
- Chen, Y.C.
- Choong, W.S.
- Clark, K.
- Diehl, T.
- Dukes, E.C.
- Durandet, C.
- Duryea, J.
- Felix, J.
- Gidal, G.
- Guglielmo, G.
- Gustafson, H.R.
- Heller, K.
- Ho, C.
- Ho, P.M.
- Holmstrom, T.
- Huang, M.
- James, C.
- Jenkins, M.
- Johns, K.
- Jones, T.
- Kaplan, D.M.
- Lederman, L.M.
- Leros, N.
- Lopez, F.
- Longo, M.J.
- Lu, L.
- Luebke, W.
- Nelson, K.
- Park, H.K.
- Perroud, J.P.
- Rajaram, D.
- Rameika, R.
- Rubin, H.A.
- Teige, S.
- Teng, P.K.
- Thomson, G.
- Volks, J.
- White, C.G.
- White, S.L.
- Zyla, P.
- Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)
- Fermilab E756 Collaboration
- HyperCP Collaboration
Description
Non-conservation of CP symmetry can manifest itself in non-lepton ichyperon decays as a difference in the decay parameter between the strange-baryon decay and its charge conjugate. By comparing the decay distribution in the Λ helicity frame for the decay sequence Ξ- → Λπ-, Λ → pπ- with that of bar Ξ+ decay, E756 at Fermilab did not observe any CP-odd effect at the 10-2 level. The status of a follow-up experiment, HyperCP (FNAL E871), to search for CP violation in charged Ξ-Λ decay with a sensitivity of 10-4 is also presented
Availability note (English)
Available from INIS in electronic form; Also available from OSTI as DE00788015; PURL: https://www.osti.gov/servlets/purl/788015-H9KMI0/native/
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Additional details
Identifiers
Publishing Information
- Imprint Pagination
- 10 p.
- Report number
- LBNL--45339
Conference
- Title
- 3. International Conference on B Physics and CP Violation
- Dates
- 3-7 Dec 1999
- Place
- Taipei (Taiwan)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 33000915
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANTIXI PARTICLES; CP INVARIANCE; DECAY; HELICITY; HYPERONS; LAMBDA BARYONS; PIONS MINUS; SENSITIVITY; SYMMETRY; XI MINUS PARTICLES
- Descriptors DEC
- ANTIBARYONS; ANTIHYPERONS; ANTIMATTER; ANTIPARTICLES; BARYONS; BOSONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HYPERONS; INVARIANCE PRINCIPLES; MATTER; MESONS; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR MESONS; STRANGE PARTICLES; XI BARYONS; XI PARTICLES
Optional Information
- Contract/Grant/Project number
- AC03-76SF00098
- Collaborations
- Fermilab E756 Collaboration; HyperCP Collaboration
- Funding organization
- USDOE Director, Office of Science. Office of High Energy and Nuclear Physics. Division of High Energy Physics (United States)