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Measurement of the e(+)e(-)-> J/psi cc cross section at sapproximate to 10.6 GeV
Belle Collaboration
2009
发表期刊PHYSICAL REVIEW D
卷号79期号:7
通讯作者Pakhlov, P (reprint author), Inst Theoret & Expt Phys, Moscow 117259, Russia.
摘要We present a new measurement of the e(+)e(-)-> J/psi c(c)over bar cross section where the c(c)over bar pair can fragment either into charmed hadrons or a charmonium state. In the former case the J/psi and a charmed hadron are reconstructed, while the latter process is measured using the recoil mass technique, which allows the identification of two-body final states without reconstruction of one of the charmonia. The measured e(+)e(-)-> J/psi c(c)over bar cross section is (0.74 +/- 0.08(-0.08)(+0.09)) pb, and the e(+)e(-)-> J/psi Xnon-c(c)over bar cross section is (0.43 +/- 0.09 +/- 0.09) pb. We note that the measured cross sections are obtained from a data sample with the multiplicity of charged tracks in the event larger than 4; corrections for the effect of this requirement are not performed as this cannot be done in a model-independent way. The analysis is based on a data sample with an integrated luminosity of 673 fb(-1) recorded near the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) asymmetric-energy collider.
关键词OCTET QUARKONIA PRODUCTION J/PSI PRODUCTION E(+)E(-) DETECTOR
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.79.071101
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000266408300001
引用统计
被引频次:39[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/311005/212899
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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Belle Collaboration. Measurement of the e(+)e(-)-> J/psi cc cross section at sapproximate to 10.6 GeV[J]. PHYSICAL REVIEW D,2009,79(7).
APA Belle Collaboration.(2009).Measurement of the e(+)e(-)-> J/psi cc cross section at sapproximate to 10.6 GeV.PHYSICAL REVIEW D,79(7).
MLA Belle Collaboration."Measurement of the e(+)e(-)-> J/psi cc cross section at sapproximate to 10.6 GeV".PHYSICAL REVIEW D 79.7(2009).
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