- Barr, GD
- Buchholz, P
- Carosi, R
- Coward, D
- Cundy, D
- Doble, N
- Gatignon, L
- Gibson, V
- Grafström, P
- Hagelberg, R
- van der Lans, J
- Nelson, HN
- Wahl, H
- Peach, KJ
- Blümer, H
- Heinz, R
- Kleinknecht, K
- Mayer, P
- Panzer, B
- Renk, B
- Rohrer, H
- Sander, HG
- Wagner, A
- Augé, E
- Fournier, D
- Heusse, P
- Iconomidou-Fayard, L
- Harrus, I
- Perdereau, O
- Schaffer, AC
- Serin, L
- Bertanza, L
- Bigi, A
- Calafiura, P
- Calvetti, M
- Carrozza, MC
- Casali, R
- Cerri, C
- Fantechi, R
- Mannelli, IG
- Marzulli, VM
- Nappi, A
- Pierazzini, G
- Holder, M
- Kreutz, A
- Quast, G
- Rost, M
- Werthenbach, R
- Zech, G
- et al.
A new measurement of the ratio of the CP-violating amplitudes for KL → 2π0 and KL → π+π- is reported. The measured value for R = {divides}η00/η+-{divides}2 is 0.9878±0.0026±0.0030, where the first error is the statistical uncertainty and the second is the estimate of the systematic uncertainty. This gives a value for the parameter describing direct CP violation: Re ε{lunate}'/ε{lunate} = (2.0 ± 0.7) × 10-3. © 1993.
