Search for the decay K(L) --> pi(0)&mgr;(+)&mgr;(-)

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

doi:10.1103/physrevlett.84.5279

Search for the decay K(L) --> pi(0)&mgr;(+)&mgr;(-)

A Alavi-Harati, T Alexopoulos + Show 83 more

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https://doi.org/10.1103/physrevlett.84.5279

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Journal: Physical Review Letters	Publication Date: Jun 5, 2000
Citations: 114

Affiliation: University of California, Los Angeles, University of Arizona, University of Wisconsin–Madison, Osaka University, Fermi National Accelerator Laboratory, University of Chicago, Rutgers, The State University of New Jersey, University of Colorado Boulder, University of Virginia, Rice University, University of California, San Diego, Elmhurst College

#Mechanism For CP Violation #Decay KL + Show 7 more

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Abstract

We report on a search for the decay K(L)-->pi(0)&mgr;(+)&mgr;(-) carried out as a part of the KTeV experiment at Fermilab. This decay is expected to have a significant CP violating contribution and a direct measurement will either support the Cabibbo-Kobayashi-Maskawa mechanism for CP violation or point to new physics. Two events were observed in the 1997 data with an expected background of 0.87+/-0.15 events, and we set an upper limit B(K(L)-->pi(0)&mgr;(+)&mgr;(-))<3. 8x10(-10) at the 90% confidence level.

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