Abstract
We report the first branching fraction measurement of the decay KL→π+π−e+e−. With a sample of 46 candidates, and an expected background level of 9.4 events, the branching fraction is determined to be B(KL→π+π−e+e−)=[3.2±0.6(stat)±0.4(syst)]×10−7. This measurement was carried out as part of the Fermilab KTeV (E799-II) experiment and is in good agreement with the expectations from the mechanisms of direct emission and inner bremsstrahlung.Received 28 January 1998DOI:https://doi.org/10.1103/PhysRevLett.80.4123©1998 American Physical Society
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
