Study of the processes e+e-→ηγ, π0γ→3γ in the c.m. energy range 600-1380 MeV at CMD-2

被引：51

作者：

Akhmetshin, RR

Aulchenko, V

Banzarov, VS

Baratt, A

Barkov, LM

Bashtovoy, NS

Bondar, AE

Bondarev, DV

Bragin, AV

Eidelman, SI ^{[1
]}

Epifanov, DA

Fedotovitch, GV

Gabyshev, NI

Gorbachev, DA

Grebeniuk, AA

Grigoriev, DN

Ignatov, R

Karpov, SV

Kazanin, V

Khazin, BI

Koop, IA

Krokovny, PP

Kuzmin, AS

Lischenko, YE

Logashenko, IB

Lukin, PA

Mikhailov, KY

Milstein, AI

Nesterenko, IN

Okhapkin, VS

Otboev, AV

Popov, AS

Redin, SI

Roberts, BL

Root, NI

Ruban, AA

Ryskulov, NM

Shamov, AG

Shatunov, YM

Shwartz, BA

Sibidanov, AL

Sidorov, V

Skrinsky, AN

Snopkov, IG

Solodov, ER

Thompson, JA

Valishev, AA

Yudin, YV

Zaitsev, AS

Zverev, SG

机构：

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

[2] Boston Univ, Boston, MA 02215 USA

[3] Novosibirsk State Univ, Novosibirsk 630090, Russia

[4] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[5] Yale Univ, New Haven, CT 06511 USA

来源：

PHYSICS LETTERS B | 2005年 / 605卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.physletb.2004.11.020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The processes e(+)e(-) --> etagamma, pi(0)gamma --> 3gamma have been studied in the c.m. energy range 600-1380 MeV with the CMD-2 detector. The following branching ratios have been determined: B(rho(0) --> etagamma) = (3.21 +/- 1.39 +/- 0.20) x 10(-4), B(omega --> etagamma) = (4.44(-1.83)(+2.59) +/- 0.28) x 10(-4), B(phi --> etagamma) = (1.373 +/- 0.014 +/- 0.085) x 10(-2), B(rho(0) --> pi(0)gamma) = (6.21(-1.18)(+1.28) +/- 0.39) x 10(-4), B(omega --> pi(0)gamma) = (9.06 +/- 0.20 +/- 0.57) x 10(-2), B(phi --> pi(0)gamma) = 0.258 +/- 0.037 +/- 0.077) x 10(-3) (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：26 / 36

页数：11

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