Measurement of the decay K{sub L}{yields}{pi}{sup 0}e{sup +}e{sup -}{gamma}

Journal Article · Sat Sep 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.052001· OSTI ID:21027669

Abouzaid, E; Blucher, E; Glazov, A; Kessler, R; Monnier, E; Solomey, N; Wah, Y W; Winston, R; Worcester, E T; Worcester, M ^[1]; Arenton, M; Cox, B; Golossanov, A; Ledovskoy, A; Nelson, K S; Phillips, II, D G; Ronquest, M; Smith, D ^[2]; Barker, A R; Niclasen, R ^[3]

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1. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
2. Department of Physics and Institute of Nuclear and Particle Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)
3. University of Colorado, Boulder, Colorado 80309 (United States)

We report on a new measurement of the branching ratio B(K{sub L}{yields}{pi}{sup 0}e{sup +}e{sup -}{gamma}) using the KTeV detector. This analysis uses the full KTeV data set collected from 1997 to 2000. We reconstruct 139 events over a background of 14, which results in B(K{sub L}{yields}{pi}{sup 0}e{sup +}e{sup -}{gamma})=(1.62{+-}0.14{sub stat}{+-}0.09{sub syst})x10{sup -8}. This result supersedes the earlier KTeV measurement of this branching ratio.

• OSTI ID: 21027669
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
ELECTRONS
KAONS NEUTRAL LONG-LIVED
PARTICLE DECAY
PHOTONS
PIONS NEUTRAL
POSITRONS
STANDARD MODEL