Measurement Of The K-L Charge Asymmetry

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

PHYSICAL REVIEW LETTERS（2002）

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摘要

We present a measurement of the charge asymmetry delta(L) in the mode K-L-->pi(+/-)e(-/+)nu based on 298 x 10(6) analyzed decays. We measure a value of delta(L)=[3322+/-58(stat )+/-47(syst)] x 10(-6), in good agreement with previous measurements and 2.4 times more precise than the current best published result. The result is used to place more stringent limits on CPT and DeltaS = DeltaQ violation in the neutral kaon system.

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