Measurement of the ω,ρ→π0e+e- branching fractions

被引：6
|
作者：
Achasov, M. N. [1 ,2 ]
Beloborodov, K. I. [1 ,2 ]
Berdyugin, A. V. [1 ]
Bogdanchikov, A. G. [1 ]
Bukin, A. D. [1 ,2 ]
Bukin, D. A. [1 ]
Vasil'ev, A. V. [1 ,2 ]
Golubev, V. B. [1 ,2 ]
Dimova, T. V. [1 ,2 ]
Druzhinin, V. P. [1 ,2 ]
Koop, I. A. [1 ,2 ]
Korol, A. A. [1 ]
Koshuba, S. V. [1 ]
Pakhtusova, E. V. [1 ]
Perevedentsev, E. A. [1 ]
Serednyakov, S. I. [1 ,2 ]
Silagadze, Z. K. [1 ,2 ]
Skrinsky, A. N. [1 ]
Shatunov, Yu. M. [1 ,2 ]
机构：
[1] Russian Acad Sci, Budker Inst Nucl Phys, Siberian Branch, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2008年 / 107卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S1063776108070054
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The e(+)e(-)->omega, rho ->pi(0)e(+)e(-) processes have been investigated in the experiments with Spherical Neutral Detector at the VEPP-2M e(+)e(-) collider. The measurements provide the probability B(omega ->pi(0)e(+)e(-)) = ( 0.761 +/- 0.053 +/- 0.064) x 10(-3) of the omega ->pi(0)e(+)e(-) conversion decay and the upper limit B(omega ->pi(0)e(+)e(-)) < 1.2 x 10(-5) (at 90% CL) for the rho ->pi(0)e(+)e(-) decay. The transition form factor was measured at three values of the 4-momentum transfer squared.
引用
收藏
页码：61 / 68
页数：8
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