K{sub L}{r_arrow}{pi}{sup 0}{gamma}e{sup +}e{sup {minus}} and its relation to CP and chiral tests
- Department of Physics and Astronomy, University of Massachusetts, Amherst, Massachusetts 01003 (United States)
The decay K{sub L}{r_arrow}{pi}{sup 0}{gamma}e{sup +}e{sup {minus}} occurs at a {ital higher} rate than the nonradiative process K{sub L}{r_arrow}{pi}{sup 0}e{sup +}e{sup {minus}}, and hence can be a background to CP violation studies using the latter reaction. It also has interest in its own right in the context of chiral perturbation theory, through its relation to the decay K{sub L}{r_arrow}{pi}{sup 0}{gamma}{gamma}. The leading order chiral loop contribution to K{sub L}{r_arrow}{pi}{sup 0}{gamma}e{sup +}e{sup {minus}}, including the (q{sub e{sup +}}+q{sub e{sup {minus}}}){sup 2}/m{sub {pi}}{sup 2} dependence, is completely calculable. We present this result and also include the higher order modifications which are required in the analysis of K{sub L}{r_arrow}{pi}{sup 0}{gamma}{gamma}. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 527128
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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