The process e+e- → ωπ0 near the φ resonance

被引：23

作者：

Aulchenko, VM

Achasov, MN

Beloborodov, KI

Berdyugin, AV

Bogdanchikov, AG

Bozhenok, AV

Bukin, AD

Bukin, DA

Burdin, SV

Vasiljev, AV

Gaponenko, IA

Golubev, VB

Dimova, TV

Drozdetsky, AA

Druzhinin, VP ^{[1
]}

Dubrovin, MS

Ivanov, PM

Ivanchenko, VN

Koop, IA

Korol, AA

Koshuba, SV

Kukartsev, GA

Lysenko, AP

Otboev, AV

Pakhtusova, EV

Salnikov, AA

Serednyakov, SI

Sidorov, VA

Silagadze, ZK

Skrinsky, AN

Shary, VV

Shatunov, YM

机构：

[1] Russian Acad Sci, Budker Inst Nucl Phys, Siberian Div, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2000年 / 90卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.559181

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The reaction e(+)e(-) --> omega pi(0) near a phi resonance was studied with a spherical neutral detector at VEPP-2M e(+)e(-) collider. Both main modes of decay of a omega meson were investigated: omega --> pi(+)pi(-)pi(0) and omega --> pi(0)gamma. The probability of decay phi --> omega pi(0) was obtained from the magnitude of the interference wave in the cross section for the reaction e(+)e(-) --> omega pi(0) --> pi(+)pi(-)pi(0)pi(0): B(phi --> omega pi(0)) = (5.5(-1.4)(+1.6) +/- 0.3) x 10(-5). The ratio of the partial widths of the omega meson was obtained from the ratio of the cross sections for the two modes: Gamma(omega --> pi(0)gamma)/Gamma(omega --> pi(+)pi(-)pi(0)) = 0.0994 +/- 0.0036 +/- 0.0038. (C) 2000 MAIK "Nauka / Interperiodica".

引用

页码：927 / 938

页数：12

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