Search for the decay KL→π0νν̄ using π0→e+e-γ

A. Alavi-Harati, I. F. Albuquerque, T. Alexopoulos, M. Arenton, K. Arisaka, S. Averitte, A. R. Barker, L. Bellantoni, A. Bellavance, J. Belz, R. Ben-David, D. R. Bergman, E. Blucher, G. J. Bock, C. Bown, S. Bright, E. Cheu, S. Childress, R. Coleman, M. D. CorcoranG. Corti, B. Cox, M. B. Crisler, A. R. Erwin, R. Ford, A. Glazov, A. Golossanov, G. Graham, J. Graham, K. Hagan, E. Halkiadakis, K. Hanagaki, M. Hazumi, S. Hidaka, Y. B. Hsiung, V. Jejer, J. Jennings, D. A. Jensen, R. Kessler, H. G.E. Kobrak, J. LaDue, A. Lath, A. Ledovskoy, P. L. McBride, A. P. McManus, P. Mikelsons, E. Monnier, T. Nakaya, U. Nauenberg, K. S. Nelson, H. Nguyen, V. O'Dell, M. Pang, R. Pordes, V. Prasad, C. Qiao, B. Quinn, E. J. Ramberg, R. E. Ray, A. Roodman, M. Sadamoto, S. Schnetzer, K. Senyo, P. Shanahan, P. S. Shawhan, W. Slater, N. Solomey, S. V. Somalwar, R. L. Stone, I. Suzuki, E. C. Swallow, R. A. Swanson, S. A. Taegar, R. J. Tesarek, G. B. Thomson, P. A. Toale, A. Tripathi, R. Tschirhart, Y. W. Wah, J. Wang, H. B. White, J. Whitmore, B. Winstein, R. Winston, J. Y. Wu, T. Yamanaka, E. D. Zimmerman

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Abstract

We report on a search for the decay KL→π0νν̄, carried out as a part of E799-II, a rare KL decay experiment at Fermilab. Within the standard model, the KL→π0νν̄ decay is dominated by direct CP violating processes, and thus an observation of the decay implies confirmation of direct CP violation. No events were observed, and we set an upper limit for the branching ratio of KL→π0νν̄ to be <5.9×10-7 at the 90% confidence level.

Original languageEnglish (US)
Article number072006
Pages (from-to)1-5
Number of pages5
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume61
Issue number7
StatePublished - Apr 1 2000

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    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., ... Zimmerman, E. D. (2000). Search for the decay KL→π0νν̄ using π0→e+e-γ. Physical Review D - Particles, Fields, Gravitation and Cosmology, 61(7), 1-5. [072006].