Measurements of σ(e+e- → hadrons) and B(ψ(3770) → D(D)over-bar, non-D(D)over-bar)

被引：0

作者：

Rong, G ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

HADRON SPECTROSCOPY | 2006年 / 814卷

关键词：

document processing; class file writing; LATEX; 2; epsilon;

D O I：

暂无

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Precision measurements of R values (R = sigma(B)(had)/sigma(B)(mu+mu-), where sigma(B)(had) and sigma(B)(mu+mu-) are Born order cross sections for inclusive hadron production and for muon pair production in e+e- annihilation, respectively.) at low energy region are important for precise test of the Standard Model [1]. On the other hand, the measurements of the R values at the center-of-mass energies around 3.6574 and at 3.773 GeV can be used to determine the branching fractions for psi(3770) -> D-0(D) over bar (0),D+D-,D (D) over bar), and for psi(3770) -> non-D (D) over bar. In this paper, we present a more precision measurement of the R values at the center-of-mass energies of 3.650, 3.6648 and 3.773 GeV, and measurements of the branching fractions for psi(3770) -> D-0,(D) over bar (0), D+D-, D (D) over bar, and for psi(3770) -> non-D (D) over bar with the data taken with the BES-II detector at the BEPC Collider.

引用

页码：414 / 420

页数：7

共 50 条

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PHYSICS LETTERS B, 2008, 659 (1-2) : 74 - 79
[2] Direct measurements of the non-D(D)over-bar cross section σψ(3770)→non-D(D)over-bar at Ecm=3.773 GeV and the branching fraction for ψ(3770)→non-D(D)over-bar
Ablikim, M.
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PHYSICAL REVIEW D, 2007, 76 (12):
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[4] Study of the branching ratio of c ψ(3770) → D(D)over-bar in e+e- → D(D)over-bar scattering
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PHYSICAL REVIEW D, 2010, 81 (01):
[5] Line shape of ψ(3770) in e+e- → D(D)over-bar
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PHYSICAL REVIEW D, 2012, 86 (11):
[6] Measurements of the cross sections for e+e-→hadrons at 3.650, 3.6648, 3.773 GeV and the branching fraction for ψ (3770)→non-D(D)over-bar
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[7] Evidence of ψ(3770) non-D(D)over-bar decay to J/ψπ+π-
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[8] Further understanding of the non-D(D)over-bar decays of ψ(3770)
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PHYSICAL REVIEW D, 2013, 88 (01):
[9] Measurement of e+e- → D(D)over-bar cross sections at the ψ(3770) resonance
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[10] Line shape and D(*)(D)over-bar(*) probabilities of ψ(3770) from the e+ e- → D(D)over-bar reaction
Yu, Q. X.
Liang, W. H.
Bayar, M.
Oset, E.
PHYSICAL REVIEW D, 2019, 99 (07)

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