Search for the KL-->π0π0e+e- Decay in the KTeV Experiment
Abstract
The recent discovery of a large CP violating asymmetry in KL-->π+π-e+e- mode has prompted us to seach for the associated KL-->π0π0e+e- decay mode in the KTeV-E799 experiment at Fermilab. In 2.7×1011 KL decays, one candidate event has been observed with an expected background of 0.3 event, resulting in an upper limit for the KL-->π0π0e+e- branching ratio of 6.6×10-9 at the 90% C.L.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2002
- DOI:
- 10.1103/PhysRevLett.89.211801
- arXiv:
- arXiv:hep-ex/0210056
- Bibcode:
- 2002PhRvL..89u1801A
- Keywords:
-
- 13.25.Es;
- 11.30.Er;
- 13.20.Eb;
- 14.40.Aq;
- Decays of K mesons;
- Charge conjugation parity time reversal and other discrete symmetries;
- pi K and eta mesons;
- High Energy Physics - Experiment
- E-Print:
- To be published in Phys. Rev. Lett