Off-shell photon light-cone wave functions of odd chirality in the effective low-energy theory
- Department of Physics, School of Physical Science and Technology, Wuhan University, 430072 Wuhan (China)
The Lorentz decomposition of the light-cone distribution amplitudes is carried out up to twist four. The Wandzura-Wilczek-like relations associated with the transverse photon wave function are derived in the same way as for the rho meson. The on-shell and off-shell photon wave functions with odd chirality at the leading twist in the effective low-energy theory derived from the instanton vacuum of QCD are calculated. The explicit expression of the transverse photon wave function, {phi}{sub {gamma}}{sub perpendicular}(u,P{sup 2}), is worked out, and the twist-two parts of the other two photon wave functions, h{sub {gamma}}{sub parallel}{sup (s),twisttwo}(u,P{sup 2}) and h{sub {gamma}}{sub parallel}{sup (t),twisttwo}(u,P{sup 2}), are calculated based on the Wandzura-Wilczek-like relations. The dependence of the coupling f{sub {gamma}}{sup perpendicular}(P{sup 2}) and the light-cone photon wave functions with respect to the virtuality, P{sup 2}, are analyzed, and the end-point behavior as well as the middle-point behavior of the photon wave functions is discussed.
- OSTI ID:
- 20776774
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 73, Issue 4; Other Information: DOI: 10.1103/PhysRevD.73.045002; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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