Examining CP symmetry in strange baryon decay

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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 {Lambda} helicity frame for the decay sequence {Xi}{sup -} {yields} {Lambda}{pi}{sup -}, {Lambda} {yields} p{pi}{sup -} with that of {bar {Xi}}{sup +} decay, E756 at Fermilab did not observe any CP-odd effect at the 10{sup -2} level. The status of a follow-up experiment, HyperCP (FNAL E871), to search for CP violation in charged {Xi}-{Lambda} decay with a sensitivity of 10{sup -4} is also presented.

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10 pages

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Luk, Kam-Biu; Collaboration, Fermilab E756; Collaboration, HyperCP; Burnstein, R.A.; Chakravorty, A.; Chan, A. et al. April 5, 2000.

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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 {Lambda} helicity frame for the decay sequence {Xi}{sup -} {yields} {Lambda}{pi}{sup -}, {Lambda} {yields} p{pi}{sup -} with that of {bar {Xi}}{sup +} decay, E756 at Fermilab did not observe any CP-odd effect at the 10{sup -2} level. The status of a follow-up experiment, HyperCP (FNAL E871), to search for CP violation in charged {Xi}-{Lambda} decay with a sensitivity of 10{sup -4} is also presented.

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10 pages

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INIS; OSTI as DE00788015

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  • The Third International Conference on B Physics and CP Violation, Taipei (TW), 12/03/1999--12/07/1999

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  • Report No.: LBNL--45339
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 788015
  • Archival Resource Key: ark:/67531/metadc724838

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  • April 5, 2000

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  • Sept. 29, 2015, 5:31 a.m.

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  • Sept. 1, 2016, 7:11 p.m.

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Luk, Kam-Biu; Collaboration, Fermilab E756; Collaboration, HyperCP; Burnstein, R.A.; Chakravorty, A.; Chan, A. et al. Examining CP symmetry in strange baryon decay, article, April 5, 2000; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc724838/: accessed November 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.