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High Energy Physics Seminars

ics High Energy
Wednesday, March 2, 2005
3:30 PM
Physics Building, Room 204
David Smith [Host: Brad Cox]
UVA
"The Search for KL-> 2&pi 0&gamma"
ABSTRACT:
The decay KL-> 2π 0γ is interesting as a probe of the sixth order of chiral perturbation theory. I am currently searching for this decay using data collected by the KTeV experiment in 1997. The decay is swamped by 3π0background events with one missing photon. Using Monte Carlo simulations of the two modes, I have designed cuts to eliminate this background while retaining signal events. The current upper limit on the decay is 5.6*10-6; my current single event sensitivity is 2.19*10-7 with only one background event remaining for one flux of data. I hope to extend this work to the 1999 data while retaining this low SES and background level.

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