Observation of the decay mode K-L ->pi(+)pi(-)e(+)e(-)

Authors
Takeuchi, Y Hemmi, Y Kurashige, H Matono, Y Murakami, K Nomura, T Sakamoto, H Sasao, N Suehiro, M Fukushima, Y Ikegami, Y Nakamura, TT Taniguchi, T Asai, M
Citation
Y. Takeuchi et al., Observation of the decay mode K-L ->pi(+)pi(-)e(+)e(-), PHYS LETT B, 443(1-4), 1998, pp. 409-414
Citations number
7
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
443
Issue
1-4
Year of publication
1998
Pages
409 - 414
Database
ISI
SICI code
0370-2693(199812)443:1-4<409:OOTDMK>2.0.ZU;2-6
Abstract
We report on results of an experimental search for the K-L --> pi(+)pi(-)e( +)e(-) decay mode. We found 13.5 +/- 4.0 events and determined its branchin g ratio to he (4.4 +/- 1.3(stat.) +/- 0.5 (syst.)) x 10(-7). The result agr ees well with the theoretical prediction. (C) 1998 Elsevier Science B.V. Al l rights reserved.