Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e(+)e(-) at root s=10.58 GeV
Belle Collaboration
刊名PHYSICAL REVIEW D
2015
卷号92期号:9页码:92007
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.92.092007
文章类型Article
英文摘要We report the first double differential cross sections of two charged pions and kaons (e(+)e(-) -> hhX) in electron-positron annihilation as a function of the fractional energies of the two hadrons for any charge and hadron combination. The dependence of these dihadron cross sections on the topology (same, opposite hemisphere or anywhere) is also studied with the help of the event shape variable thrust and its axis. The ratios of these dihadron cross sections for different charges and hadron combinations directly shed light on the contributing fragmentation functions. For example, we find that the ratio of same-sign pion pairs over opposite-sign pion pairs drops toward higher fractional energies where disfavored fragmentation is expected to be suppressed. These dihadron results are obtained from a 655 fb(-1) data sample collected near the gamma (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Extending the previously published single-pion and single-kaon cross sections, single-proton (e(+)e(-) -> pX) cross sections are extracted from a 159 fb(-1) data subsample.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别SCI
WOS记录号WOS:000365000000001
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被引频次:5[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/311005/228805
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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Belle Collaboration. Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e(+)e(-) at root s=10.58 GeV[J]. PHYSICAL REVIEW D,2015,92(9):92007.
APA Belle Collaboration.(2015).Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e(+)e(-) at root s=10.58 GeV.PHYSICAL REVIEW D,92(9),92007.
MLA Belle Collaboration."Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e(+)e(-) at root s=10.58 GeV".PHYSICAL REVIEW D 92.9(2015):92007.
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