Search for CP violation in charged-Ξ and Λ hyperon decays
Holmstrom, T.; Leros, N.; Burnstein, R.A.; Chakravorty, A.; Chan, A.; Chen, Y.C.; Choong, W.S.; Clark, K.; Dukes, E.C.; Durandet, C.; Felix, J.; Fu, Y.; Gidal, G.; Gu, P.; Gustafson, H.R.; Ho, C.; Huang, M.; James, C.; Jenkins, C.M.; Jones, T.; Kaplan, D.M.; Lederman, L.M.; Longo, M.J.; Lopez, F.; Lu, L.C.; Luebke, W.; Luk, K.B.; Nelson, K.S.; Park, H.K.; Perroud, J.-P.; Rajaram, D.; Rubin, H.A.; Teng, P.K.; Volk, J.; White, C.G.; White, S.L.; Zyla, P.
2004

Abstract

The novel sources of CP violation observed in charged χ and λ hyperon decays were investigated. A comparison of the p and p̄ angular distributions in the hyperon decays was made using a subset of the data from the HyperCP experiment (E871) at Fermilab. A possible source of bias was found to be a momentum-dependent differential loss of events due to interactions of the χ- and χ̄+ decay products. The obtained result was observed to be stable with respect to time, χ momentum, and secondary-beam intensity, The results show that differences between the χ- and χ+ production angles could cause a bias due to production polarization differences.

Details

Title Search for CP violation in charged-Ξ and Λ hyperon decays
Author(s) Holmstrom, T. ; Leros, N. ; Burnstein, R.A. ; Chakravorty, A. ; Chan, A. ; Chen, Y.C. ; Choong, W.S. ; Clark, K. ; Dukes, E.C. ; Durandet, C. ; Felix, J. ; Fu, Y. ; Gidal, G. ; Gu, P. ; Gustafson, H.R. ; Ho, C. ; Huang, M. ; James, C. ; Jenkins, C.M. ; Jones, T. ; Kaplan, D.M. ; Lederman, L.M. ; Longo, M.J. ; Lopez, F. ; Lu, L.C. ; Luebke, W. ; Luk, K.B. ; Nelson, K.S. ; Park, H.K. ; Perroud, J.-P. ; Rajaram, D. ; Rubin, H.A. ; Teng, P.K. ; Volk, J. ; White, C.G. ; White, S.L. ; Zyla, P.
Published in Physical Review Letters
Volume 93
Issue 26 I
Pages 262001
Date 2004
DOI https://doi.org/10.1103/PhysRevLett.93.262001
Other identifier(s) View record in Scopus
Laboratories LPHE
Record Appears in Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2010-11-05

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