【摘 要】
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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
【机 构】
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College of Physics and Technology, Wuhan University, Wuhan 430072
论文部分内容阅读
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 P2, and that about the end-point behaviour of the transverse photon wavefunction is given.
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