Decay φ→π+ π-

被引：18

作者：

Achasov, MN ^{[1
]}

Beloborodov, KI

Berdyugin, AV

Bozhenok, AV

Bukin, AD

Bukin, DA

Burdin, SV

Dimova, TV

Druzhinin, VP

Dubrovin, MS

Ganyushin, DI

Gaponenko, IA

Golubev, VB

Ivanchenko, VN

Ivanov, PM

Korol, AA

Koshuba, SV

Pakhtusova, EV

Perevedentsev, EA

Salnikov, AA

Serednyakov, SI

Shary, VV

Shatunov, YM

Sidorov, VA

Silagadze, ZK

Valishev, AA

Vasiljev, AV

机构：

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

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

PHYSICS LETTERS B | 2000年 / 474卷 / 1-2期

关键词：

e(+)e(-) collisions; vector mason; hadronic decay; detector;

D O I：

10.1016/S0370-2693(00)01477-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The process e(+)e(-) --> pi(+)pi(-) has been studied with the SND detector at VEPP-2M e(+)e(-) collider in the vicinity of phi(1020) resonance. From the analysis of the energy dependence of measured cross section the branching ratio B(phi --> pi(+)pi(-)) = (7.1 +/- 1.1 +/- 0.9).10(-5) and the phase psi(pi) = -(34 +/- 3 +/- 3)degrees of interference with the non-resonant pi(+)pi(-) production amplitude were obtained. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

引用

页码：188 / 193

页数：6

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