| Off-Shell Photon Light-Cone Transverse Wavefunction at Leading Twist |
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| 引用本文： | 喻然 刘觉平 朱凯. Off-Shell Photon Light-Cone Transverse Wavefunction at Leading Twist[J]. 中国物理快报, 2005, 22(10): 2515-2518 |
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| 作者姓名： | 喻然 刘觉平 朱凯 |
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| 作者单位： | [1]College of Physics and Technology, Wuhan University, Wuhan 430072 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10075036, the BEPC National Laboratory Project R＆D and BES Collaboration Research Foundation. |
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| 摘 要： | The explicit expression of the transverse photon wavefunction φγ⊥（u, p2） at the leading twist with the on-shell and the off-shell momenta are calculated in the effective low-energy theory derived from the instanton vacuum of QCD, where both the space-like region as well as the time-like one of the momenta for the virtual photons are investigated. In addition, the problem about the consistency between the two different definitions of the transverse photon wavefunction with chiral-odd Dirac structure, σμν, has been considered, and proven to be true at the leading order by means of the sum rule method. A brief discussion of the dependence of the transverse light-cone photon wavefunction φγ⊥（u, p2） and its coupling, Fγ^⊥（u, P2） to the corresponding quark-antiquark current with respect to p^2, and that about the end-point behaviour of the transverse photon wavefunction is given.
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| 关 键 词： | 光子 横向波函数 直接表达 瞬子真空 |
| 收稿时间： | 2005-06-14 |
| 修稿时间： | 2005-06-14 |
Off-Shell Photon Light-Cone Transverse Wavefunction at Leading Twist |
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| Yu Ran;Liu JiaoPing;Zhu Kai. Off-Shell Photon Light-Cone Transverse Wavefunction at Leading Twist[J]. Chinese Physics Letters, 2005, 22(10): 2515-2518 |
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| Authors: | Yu Ran Liu JiaoPing Zhu Kai |
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