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

Study of the processes e+e-→ηγ, π0γ→3γ in the c.m. energy range 600-1380 MeV at CMD-2
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DOI：
10.1016/j.physletb.2004.11.020
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发表时间：
2005-01-06
期刊：
PHYSICS LETTERS B
影响因子：
4.4
通讯作者：
Zverev, SG
Zverev, SG
中科院分区：
物理与天体物理2区
文献类型：
--
作者：
Akhmetshin, RR;Aulchenko, V;Zverev, SG

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本文研究了e(+)e(-)-&gt；eagamma，pi(0)--&gt；3Gamma过程。CMD-2探测器的能量范围为600-1380 MeV。结果表明：B(Rho(0)--gt；etagamma)=(3.21+/-1.39+/-0.20)x 10(-4)，B(omega--&gt；etagamma)=(4.44(-1.83)(+2.59)+/-0.28)x10(-4)，B(phi--&gt；伽玛)=(1.373+/-0.014+/-0.085)x 10(-2)，B(Rho(0)-pi(0)Gamma)=(6.21(-1.18)(+1.28)+/-0.39)x10(-4)，B(omega-&gt；pi(0)Gamma)=(9.06+/-0.20+/-0.57)x10(-2)，B(Phi--&gt；PI(0)伽马)=0.258+/-0.037+/-0.077)x 10(-3)(C)2004爱思唯尔B.V.保留所有权利。
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.