Study of ρ and ω meson conversion decays with the CMD-2 detector at the VEPP-2M collider

被引：0

作者：

Kazanine, V ^{[1
]}

机构：

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

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2005年 / 20卷 / 2-3期

关键词：

vector mesons; conversion decays; CMD-2;

D O I：

10.1142/S0217751X05021919

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：

In 2000 a large statistical sample of about 3.4 pb(-1) was collected in the 720-840 MeV c.m. energy range with the CMD-2 detector at the VEPP-2M collider. It corresponds to 1.8-10(6) omega meson decays. This data sample was used to study the p and W meson conversion decays. The measured branching fraction for the omega -> pi(0)e(+)e(-) decay mode agrees with the previous result of the ND detector but has about two times better accuracy. Upper limits for the decay modes rho -> pi(0)e(+)e(-) and rho,omega -> eta e(+)e(-) were set for the first time.

引用

页码：606 / 608

页数：3

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