Study of the K-→μ-νπο decay

被引：13

作者：

Ajinenko, IV ^{[1
]}

Akimenko, SA

Britvich, GI

Britvich, IG

Datsko, KV

Filin, AP

Inyakin, AV

Konstantinov, AS

Konstantinov, VF

Korolkov, IY

Leontiev, VM

Novikov, VP

Obraztsov, VF

Polyakov, VA

Romanovsky, VI

Shelikhov, VI

Smirnov, NE

Soldatov, MM

Tchikilev, OG

Usenko, EA

Vasiliev, MV

Vlasov, EV

Yakimchuk, VI

Yushchenko, OP

Bolotov, VN

Laptev, SV

Lebedev, VA

Pastsjak, AR

Polyarush, AY

Sirodeev, RK

机构：

[1] Inst High Energy Phys, Protvino 142284, Moscow Oblast, Russia

[2] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 2003年 / 66卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

Elementary Particle; Form Factor; Slope Parameter; Scalar Coupling; Secondary Beam;

D O I：

10.1134/1.1540663

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The decay K- -->mu(-) vpi(0) has been studied using in-flight decays detected with the ISTRA+ setup operating in the 25-GeV negative secondary beam of the U-70 PS. About 112K events were used for the analysis. The lambda(+) and lambda(0) slope parameters of the decay form factors f(+)(t) and f(0)(t) have been measured: lambda(+) = 0.0321 +/- 0.004(stat.) +/- 0.002(syst.), A(0) = 0.0209 +/- 0.004(stat.) 0.002(syst.); the correlation dlambda(0)/dlambda(+) = -0.46. The limits on the possible tensor and scalar couplings have been derived: f(T)/f(+)(0) = -0.021 +/- 0.028(stat.) +/- 0.014(theor.), f(s)/f(+)(0) = 0.004 +/- 0.005(stat.) 0.005(theor.). (C) 2003MAIK"Nauka/Interperiodica".

引用

页码：105 / 109

页数：5

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