Observation of KS0 semileptonic decays with the CMD-2 detector |
| |
| Affiliation: | 1. Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia;2. University of Pittsburgh, Pittsburgh, PA 15260, USA;1. Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia;2. Boston University, Boston, MA 02215, USA;3. Novosibirsk State University, Novosibirsk 630090, Russia;4. University of Pittsburgh, Pittsburgh, PA 15260, USA;1. Budker Institute of Nuclear Physics, Novosibirsk, Russia;1. Budker Institute of Nuclear Physics, Russian Acad. Sci. Siberian Div., Novosibirsk 630090, Russia;2. Novosibirsk State University, Novosibirsk 630090, Russia;3. Boston University, Boston, MA 02215, USA;4. Weizmann Institute of Science, 76100 Rehovot, Israel |
| |
| Abstract: | The decay KS0→πeν has been observed by the CMD-2 detector at the e+e− collider VEPP-2M at Novosibirsk. Of 6 million produced KL0KS0 pairs, 75±13 events of the KS0→πeν decay were selected. The corresponding branching ratio is B(KS0→πeν)=(7.2±1.4)×10−4. This result is consistent with the evaluation of B(KS0→πeν) from the KL0 semileptonic rate and KS0 lifetime assuming ΔS=ΔQ . |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
