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Search for the decay KL --> pi(0)e+e-.
Alavi-Harati, A; Albuquerque, I F; Alexopoulos, T; Arenton, M; Arisaka, K; Averitte, S; Barker, A R; Bellantoni, L; Bellavance, A; Belz, J; Ben-David, R; Bergman, D R; Blucher, E; Bock, G J; Bown, C; Bright, S; Cheu, E; Childress, S; Coleman, R; Corcoran, M D; Corti, G; Cox, B; Crisler, M B; Erwin, A R; Ford, R; Fordyce, P M; Glazov, A; Golossanov, A; Graham, G; Graham, J; Hagan, K; Halkiadakis, E; Hanagaki, K; Hidaka, S; Hsiung, Y B; Jejer, V; Jennings, J; Jensen, D A; Kessler, R; Kobrak, H G; LaDue, J; Lath, A; Ledovskoy, A; McBride, P L; McManus, A P; Mikelsons, P; Monnier, E; Nakaya, T; Nelson, K S; Nguyen, H.
Afiliação
  • Alavi-Harati A; University of Arizona, Tucson 85721, USA.
Phys Rev Lett ; 86(3): 397-401, 2001 Jan 15.
Article em En | MEDLINE | ID: mdl-11177840
ABSTRACT
We report on a search for the decay KL-->pi(0)e+e- carried out by the KTeV/E799 experiment at Fermilab. This decay is expected to have a significant CP violating contribution and the measurement of its branching ratio could support the Cabibbo-Kobayashi-Maskawa mechanism for CP violation or could point to new physics. Two events were observed in the 1997 data with an expected background of 1.06+/-0.41 events, and we set an upper limit B(KL-->pi(0)e+e-)<5.1 x 10(-10) at the 90% confidence level.
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2001 Tipo de documento: Article
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2001 Tipo de documento: Article