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Alavi-Harati A, Alexopoulos T, Arenton M, et al. Search for the KL-->pi 0 pi 0 e+e- decay in the KTeV experiment. Phys Rev Lett. 2002;89(21):211801doi: 10.1103/PhysRevLett.89.211801.
Alavi-Harati, A., Alexopoulos, T., Arenton, M., Arisaka, K., Averitte, S., Barbosa, R. F., Barker, A. R., Barrio, M., Bellantoni, L., Bellavance, A., Belz, J., 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., Erwin, A. R., Ford, R., Glazov, A., Golossanov, A., Graham, G., Graham, J., Halkiadakis, E., Hamm, J., Hanagaki, K., Hidaka, S., Hsiung, Y. B., Jejer, V., Jensen, D. A., Kessler, R., Kobrak, H. G., LaDue, J., Lath, A., Ledovskoy, A., McBride, P. L., Mikelsons, P., Monnier, E., Nakaya, T., Nelson, K. S., Nguyen, H., O'Dell, V., Pordes, R., Prasad, V., Qi, X. R., Quinn, B., Ramberg, E. J., Ray, R. E., Roodman, A., Schnetzer, S., Senyo, K., Shanahan, P., Shawhan, P. S., Shields, J., Slater, W., Solomey, N., Somalwar, S. V., Stone, R. L., Swallow, E. C., Taegar, S. A., Tesarek, R. J., Thomson, G. B., Toale, P. A., Tripathi, A., Tschirhart, R., Turner, S. E., Wah, Y. W., Wang, J., White, H. B., Whitmore, J., Winstein, B., Winston, R., Yamanaka, T., & Zimmerman, E. D. (2002). Search for the KL-->pi 0 pi 0 e+e- decay in the KTeV experiment. Physical review letters, 89(21), 211801. https://doi.org/10.1103/PhysRevLett.89.211801
Alavi-Harati, A, et al. "Search for the KL-->pi 0 pi 0 e+e- decay in the KTeV experiment." Physical review letters vol. 89,21 (2002): 211801. doi: https://doi.org/10.1103/PhysRevLett.89.211801
Alavi-Harati A, Alexopoulos T, Arenton M, Arisaka K, Averitte S, Barbosa RF, Barker AR, Barrio M, Bellantoni L, Bellavance A, Belz J, Bergman DR, Blucher E, Bock GJ, Bown C, Bright S, Cheu E, Childress S, Coleman R, Corcoran MD, Corti G, Cox B, Erwin AR, Ford R, Glazov A, Golossanov A, Graham G, Graham J, Halkiadakis E, Hamm J, Hanagaki K, Hidaka S, Hsiung YB, Jejer V, Jensen DA, Kessler R, Kobrak HG, LaDue J, Lath A, Ledovskoy A, McBride PL, Mikelsons P, Monnier E, Nakaya T, Nelson KS, Nguyen H, O'Dell V, Pordes R, Prasad V, Qi XR, Quinn B, Ramberg EJ, Ray RE, Roodman A, Schnetzer S, Senyo K, Shanahan P, Shawhan PS, Shields J, Slater W, Solomey N, Somalwar SV, Stone RL, Swallow EC, Taegar SA, Tesarek RJ, Thomson GB, Toale PA, Tripathi A, Tschirhart R, Turner SE, Wah YW, Wang J, White HB, Whitmore J, Winstein B, Winston R, Yamanaka T, Zimmerman ED. Search for the KL-->pi 0 pi 0 e+e- decay in the KTeV experiment. Phys Rev Lett. 2002 Nov 18;89(21):211801. doi: 10.1103/PhysRevLett.89.211801. Epub 2002 Oct 31. PMID: 12443402.
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Phys Rev Lett. 2002 Nov 18;89(21):211801. doi: 10.1103/PhysRevLett.89.211801. Epub 2002 Oct 31.

Search for the KL-->pi 0 pi 0 e+e- decay in the KTeV experiment.

Physical review letters

A Alavi-Harati, T Alexopoulos, M Arenton, K Arisaka, S Averitte, R F Barbosa, A R Barker, M Barrio, L Bellantoni, A Bellavance, J Belz, D R Bergman, E Blucher, G J Bock, C Bown, S Bright, E Cheu, S Childress, R Coleman, M D Corcoran, G Corti, B Cox, A R Erwin, R Ford, A Glazov, A Golossanov, G Graham, J Graham, E Halkiadakis, J Hamm, K Hanagaki, S Hidaka, Y B Hsiung, V Jejer, D A Jensen, R Kessler, H G E Kobrak, J LaDue, A Lath, A Ledovskoy, P L McBride, P Mikelsons, E Monnier, T Nakaya, K S Nelson, H Nguyen, V O'Dell, R Pordes, V Prasad, X R Qi, B Quinn, E J Ramberg, R E Ray, A Roodman, S Schnetzer, K Senyo, P Shanahan, P S Shawhan, J Shields, W Slater, N Solomey, S V Somalwar, R L Stone, E C Swallow, S A Taegar, R J Tesarek, G B Thomson, P A Toale, A Tripathi, R Tschirhart, S E Turner, Y W Wah, J Wang, H B White, J Whitmore, B Winstein, R Winston, T Yamanaka, E D Zimmerman

Affiliations

  1. University of Wisconsin, Madison, Wisconsin 53706, USA.

PMID: 12443402 DOI: 10.1103/PhysRevLett.89.211801

Abstract

The recent discovery of a large CP violating asymmetry in KL-->pi+pi-e+e- mode has prompted us to seach for the associated KL-->pi 0 pi 0 e+e- decay mode in the KTeV-E799 experiment at Fermilab. In 2.7 x 10(11) K(L) decays, one candidate event has been observed with an expected background of 0.3 event, resulting in an upper limit for the KL-->pi 0 pi 0 e+e- branching ratio of 6.6 x 10(-9) at the 90% C.L.

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