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Study of chi(cJ) radiative decays into a vector meson
BESIII Callaboration
2011
发表期刊PHYSICAL REVIEW D
卷号83期号:11
通讯作者Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要The decays chi(cJ) -> gamma V ( V = phi, rho(0), omega) are studied with a sample of radiative psi' -> gamma chi(cJ) events in a sample of (1.06 +/- 0.04) X 10(8)psi' events collected with the BESIII detector. The branching fractions are determined to be: B(chi c1 -> gamma phi) = 25.8 +/- 5.2 +/- 2.3 X 10(-6), B(chi(c1) -> gamma rho(0)) = (228 +/- 13 +/- 22) X 10(-6), and B(chi(c1) -> gamma omega) = (69.7 +/- 7.2 +/- 6.6) X 10(-6). The decay chi(c1) -> gamma phi is observed for the first time. Upper limits at the 90% confidence level on the branching fractions for chi(c0) and chi(c2) decays into these final states are determined. In addition, the fractions of the transverse polarization component of the vector meson in chi(c1) -> gamma V decays are measured to be 0.29(-0.12-0.09)(+0.13+0.10) fo chi(c1) -> gamma phi, 0.158 +/- 0.037(-0.014)(+0.015) for chi(c1) -> gamma rho(o), and 0.247(-0.087-0.026)(+0.090+0.044) for chi(c1) -> gamma omega, respectively. The first errors are statistical and the second ones are systematic.
关键词DETECTOR
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.83.112005
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000291464100002
引用统计
被引频次:64[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213060
专题实验物理中心
作者单位中国科学院高能物理研究所
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BESIII Callaboration. Study of chi(cJ) radiative decays into a vector meson[J]. PHYSICAL REVIEW D,2011,83(11).
APA BESIII Callaboration.(2011).Study of chi(cJ) radiative decays into a vector meson.PHYSICAL REVIEW D,83(11).
MLA BESIII Callaboration."Study of chi(cJ) radiative decays into a vector meson".PHYSICAL REVIEW D 83.11(2011).
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