Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD
Cao FG(曹福广); 黄涛(理); Cao, FG; Huang, T
刊名PHYSICAL REVIEW D
1999
卷号59期号:9页码:93004
学科分类Astronomy & Astrophysics; Physics
通讯作者Massey Univ, Inst Fundamental Sci, Palmerston North, New Zealand ; CCAST, World Lab, Beijing 100080, Peoples R China ; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China ; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
文章类型Article
英文摘要The large-Q(2) behavior of eta(c)-gamma and eta(b)-gamma transition form factors F-eta c gamma(Q(2)) and F-eta b gamma(Q(2)) is analyzed in the framework of light-cone perturbative QCD with heavy quark (c and b) mass effects, parton transverse momentum dependence, and higher helicity components in the light-cone wave function are respected. It is pointed out that the quark mass effect brings significant modifications to the asymptotic predictions of the transition form factors in a rather broad energy region, and the modification for F-eta b gamma(Q(2)) is much more severe than that for F-eta c gamma(Q(2)) due to the b quark being heavier than the c quark. The parton transverse momentum and the higher helicity components also play a role in reducing the perturbative predictions. For the transition form factor F-eta c gamma(Q(2)), they bring sizable corrections in the present experimentally accessible energy region (Q(2) less than or equal to 10 GeV2). For the transition form factor F-eta b gamma(Q(2)), the corrections coming from these two factors are negligible since the b-quark mass is much larger than the parton's average transverse momentum. The coming e(+)e(-) collider (CERN LEP2) will provide the opportunity to examine these theoretical predictions. [S0556-2821(99)00909-1].
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000080114600015
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被引频次:16[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/311005/240850
专题中国科学院高能物理研究所_理论物理室_期刊论文
中国科学院高能物理研究所_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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Cao FG,Huang T,Cao, FG,et al. Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD[J]. PHYSICAL REVIEW D,1999,59(9):93004.
APA 曹福广,黄涛,Cao, FG,&Huang, T.(1999).Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD.PHYSICAL REVIEW D,59(9),93004.
MLA 曹福广,et al."Large corrections to asymptotic F-eta c gamma and F-eta b gamma in the light-cone perturbative QCD".PHYSICAL REVIEW D 59.9(1999):93004.
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