K+ → π0μ+νγ Radiative Decay: Recent Results from the ''OKA'' Experiment

被引：0

作者：

Tiurin, I. S. ^{[1
]}

机构：

[1] Natl Res Ctr Kurchatov Inst IHEP, Protvino 142281, Moscow, Russia

来源：

MOSCOW UNIVERSITY PHYSICS BULLETIN | 2024年 / 79卷 / SUPPL1期

基金：

俄罗斯科学基金会;

关键词：

OKA detector; kaon; radiative decay;

D O I：

10.3103/S0027134924700929

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The K+ -> pi(0)mu(+)nu gamma (K-mu 3 gamma) decay is measured with OKA detector at the RF-separated 17.7 GeV/c momentum kaon beam from the U-70 synchrotron. The data obtained corresponds to the value of 2.62 x 10(10) "live" kaons passing to the decay volume. About 1000 K-mu 3 gamma events are extracted. The ratio of Br(K-mu 3 gamma)/Br(K-mu 3) is measured. The T-odd correlation xi(pi mu gamma), which is the mixed product of the momenta of mu(+), pi(0), and gamma in the kaon rest frame, is measured. The asymmetry of the distribution in xi is characterized by the ratio A(xi) = (N+ - N-)/(N+ + N-), where N+ (N-) is the number of events with positive (negative) xi. The values of A(xi) is obtained. Our results are preliminary, with systematic errors being estimated.

引用

页码：131 / 134

页数：4

共 50 条

[1] Study of the K+→π0μ+νγ Decay: Preliminary Results from the "OKA" Experiment
Tiurin, I. S.
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[2] K+ → π0μ+νγ and K+ → π0e+νγ Decays: Recent Results from the "OKA" Experiment
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EUROPEAN PHYSICAL JOURNAL C, 2019, 79 (04):
[4] Measurement of the K+ → μ+νμγ decay form factors in the OKA experiment
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[6] About radiative kaon decay K+→π+π0γ
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[7] Measurement of the T-Odd Correlation in the K+ → π0e+νeγ Radiative Decay at the OKA Setup
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[8] Measurement of the T-Odd Correlation in the K+ → π0e+νeγ Radiative Decay at the OKA Setup
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Duk, V. A.
Zalikhanov, B. Zh.
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Kekelidze, G. D.
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Lishin, V. A.
Lysan, V. M.
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Obraztsov, V. F.
Okhotnikov, A. V.
Polyakov, V. A.
Romanovsky, V. I.
Rykalin, V. I.
Sadovsky, A. S.
Samoilenko, V. D.
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Uvarov, V. A.
Filin, A. P.
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Tchikilev, O. G.
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[9] Study of K+ →π0e+νeγ decay with OKA setup
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[10] INT- Contribution to Form Factors of K+→μ+νμγ Decay in OKA Experiment
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