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Measurements of the cross sections for e(+)e(-)-> hadrons at 3.650, 3.6648, 3.773 GeV and the branching fraction for psi (3770)-> non-D(D)over-bar
BES Callaboration
2006
发表期刊PHYSICS LETTERS B
卷号641期号:2页码:145-155
通讯作者Rong, G (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要Using the BES-II detector at the BEPC Collider, we measured the lowest order cross sections and the R values (R = sigma(0)(e+e--> hadrons)/sigma(0)(e+e-->mu+mu-)) for inclusive hadronic event production at the centre-of-mass energies of 3.650, 3.6648 and 3.773 GeV. The results lead to R-uds = 2.218 +/- 0.019 +/- 0.089 which is the average of these measured at 3.650 GeV and 3.6648 GeV, and R = 3.746 +/- 0.037 +/- 0.187 at root s = 3.773 GeV. We determined the lowest order cross section for psi (3770) production to be sigma(B)(psi)((3770)) = (9.323 +/- 0.253 +/- 0.801) nb at 3.773 GeV, the branching fractions for psi (3770) decays to be BF(psi (3770) -> D-0(D) over bar (0)) = (49.5 +/- 1.3 +/- 3.8)%, BF(psi (3770) -> D+D-) = (35.7 +/- 1.1 +/- 3.4)% and BF(psi (3770) -> D (D) over bar) = (85.5 +/- 1.7 +/- 5.8)%, which result in the total non-D (D) over bar branching fraction of psi(3770) decay to be BF(psi (3770) -> non-D (D) over bar) = (14.5 +/- 1.7 +/- 5.8)%. (c) 2006 Elsevier B.V. All rights reserved.
关键词E&E-ANNIHILATION E(+)E(-) ANNIHILATION DECAY WIDTHS VACUUM POLARIZATION HADRONIC PRODUCTION QUANTUM NUMBERS ENERGY PHYSICS MASS J/PSI-PI(+)PI(-)
学科领域Physics
DOI10.1016/j.physletb.2006.08.049
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000241137400005
引用统计
被引频次:68[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/311005/212720
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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BES Callaboration. Measurements of the cross sections for e(+)e(-)-> hadrons at 3.650, 3.6648, 3.773 GeV and the branching fraction for psi (3770)-> non-D(D)over-bar[J]. PHYSICS LETTERS B,2006,641(2):145-155.
APA BES Callaboration.(2006).Measurements of the cross sections for e(+)e(-)-> hadrons at 3.650, 3.6648, 3.773 GeV and the branching fraction for psi (3770)-> non-D(D)over-bar.PHYSICS LETTERS B,641(2),145-155.
MLA BES Callaboration."Measurements of the cross sections for e(+)e(-)-> hadrons at 3.650, 3.6648, 3.773 GeV and the branching fraction for psi (3770)-> non-D(D)over-bar".PHYSICS LETTERS B 641.2(2006):145-155.
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