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Measurement of the gamma gamma -> pi(+)pi(-) and gamma gamma -> K(+)K(-) processes at energies of 2.4-4.1 GeV
Belle Collaboration
2005
发表期刊PHYSICS LETTERS B
卷号615期号:1-2页码:#REF!
通讯作者Nakazawa, H (reprint author), High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan.
文章类型Article
摘要We have measured pi(+)pi(-) and K(+)K(-) production in two-photon collisions using 87.7 fb(-1) of data collected with the Belle detector at the asymmetric energy e(+)e(-) collider KEKB. The cross sections are measured to high precision in the two-photon center-of-mass energy (W) range between 2.4 GeV < W < 4.1 GeV and angular region broken vertical bar cos theta*broken vertical bar < 0.6. The cross section ratio sigma(gamma gamma -> K(+)K(-))/sigma(gamma gamma -> pi(+)pi(-)) is measured to be 0.89 +/- 0.04(stat.)+/- 0.15(syst.) in the range of 3.0 GeV < W < 4.1 GeV, where the ratio is energy-independent. We observe a sin(-4)theta* behavior of the cross section in the same W range. Production of chi(c0) and chi(c2) mesons is observed in both gamma gamma -> pi(+)pi(-) and gamma gamma -> K(+)K(-) modes. (c) 2005 Elsevier B.V. All rights reserved.
学科领域Physics
DOI10.1016/j.physletb.2005.03.067
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000229407600005
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被引频次:53[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/311005/225674
专题实验物理中心
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Belle Collaboration. Measurement of the gamma gamma -> pi(+)pi(-) and gamma gamma -> K(+)K(-) processes at energies of 2.4-4.1 GeV[J]. PHYSICS LETTERS B,2005,615(1-2):#REF!.
APA Belle Collaboration.(2005).Measurement of the gamma gamma -> pi(+)pi(-) and gamma gamma -> K(+)K(-) processes at energies of 2.4-4.1 GeV.PHYSICS LETTERS B,615(1-2),#REF!.
MLA Belle Collaboration."Measurement of the gamma gamma -> pi(+)pi(-) and gamma gamma -> K(+)K(-) processes at energies of 2.4-4.1 GeV".PHYSICS LETTERS B 615.1-2(2005):#REF!.
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