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Next-to-Leading-Order QCD Corrections to e(+)e(-)-> J/psi gg at the B Factories
Gong B(龚斌); Wang JX(王建雄); Gong, G; Wang, JX
2009
发表期刊PHYSICAL REVIEW LETTERS
卷号102期号:16页码:162003
通讯作者[Gong, Bin] CAS, Inst High Energy Phys, Beijing 100049, Peoples R China ; CAS, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
摘要We calculate the next-to-leading-order (NLO) QCD corrections to e(+)e(-)-> J/psi gg via color singlet J/psi(S-3(1)) at the B factories. The result shows that the cross section is enhanced to 0.373 pb by a K factor (NLO/LO) of about 1.21. By considering its dependence on the charm quark mass and renormalization scale, the NLO cross section can range from 0.294 to 0.409 pb. Further including the psi(') feed-down, sigma[e(+)e(-)-> J/psi X(non-cc<)] is enhanced by another factor of about 1.29 and reach 0.482 pb. In addition, the momentum distributions of J/psi production and polarization are presented. Recent measurements from Belle agree well with our prediction for the cross section and momentum distribution. It is expected that this process can serve as a very good channel to clarify the J/psi polarization puzzle by performing further experimental measurements.
文章类型Article
学科领域Physics
研究领域[WOS]Physics
DOI10.1103/PhysRevLett.102.162003
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语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000265479300017
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被引频次:55[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/311005/241010
专题理论物理室
作者单位中国科学院高能物理研究所
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Gong B,Wang JX,Gong, G,et al. Next-to-Leading-Order QCD Corrections to e(+)e(-)-> J/psi gg at the B Factories[J]. PHYSICAL REVIEW LETTERS,2009,102(16):162003.
APA 龚斌,王建雄,Gong, G,&Wang, JX.(2009).Next-to-Leading-Order QCD Corrections to e(+)e(-)-> J/psi gg at the B Factories.PHYSICAL REVIEW LETTERS,102(16),162003.
MLA 龚斌,et al."Next-to-Leading-Order QCD Corrections to e(+)e(-)-> J/psi gg at the B Factories".PHYSICAL REVIEW LETTERS 102.16(2009):162003.
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