Observation of KS0 semileptonic decays with the CMD-2 detector

被引：6

作者：

Akhmetshin, RR ^{[1
]}

Anashkin, EV

Arpagaus, M

Aulchenko, VM

Banzarov, VS

Barkov, LM

Baru, SE

Bashtovoy, NS

Bondar, AE

Bondarev, DV

Bragin, AV

Chernyak, DV

Chertovskikh, AG

Dvoretsky, AS

Eidelman, SI

Fedotovich, GV

Gabyshev, NI

Grebeniuk, AA

Grigoriev, DN

Ivanov, PM

Karpov, SV

Khazin, BI

Koop, IA

Kurdadze, LM

Kuzmin, AS

Logashenko, IB

Lukin, PA

Mikhailov, KY

Nesterenko, IN

Okhapkin, VS

Perevedentsev, EA

Popov, AS

Purlatz, TA

Root, NI

Ruban, AA

Ryskulov, NM

Shamov, AG

Shatunov, YM

Shekhtman, AI

Shwartz, BA

Sidorov, VA

Skrinsky, AN

Smakhtin, VP

Snopkov, IG

Solodov, EP

Stepanov, PY

Sukhanov, AI

Titov, VM

Yudin, YV

Zverev, SG

机构：

[1] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[2] Univ Pittsburgh, Pittsburgh, PA 15260 USA

来源：

PHYSICS LETTERS B | 1999年 / 456卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1016/S0370-2693(99)00443-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The decay K-S(0) --> pi ev has been observed by the CMD-2 detector at the e(+)e(-) collider VEPP-2M at Novosibirsk. Of 6 million produced (KLKS0)-K-0 pairs, 75 +/- 13 events of the K-S0 --> pi ev decay were selected. The corresponding branching ratio is B( K-S(0) --> pi ev)=(7.2 +/- 1.4) X 10(-4). This result is consistent with the evaluation of B( K-S(O) --> pi ev) from tile K-L(0),(C) semileptonic rate and K-S(0) lifetime assuming Delta S =Delta Q. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：90 / 94

页数：5

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