Off-Shell Longitudinal Photon Light-Cone Wavefunction  in the Low-Energy Effective Theory of QCD

Chin. Phys. Lett.

2006, Vol. 23

Issue (5): 1128-1131 DOI:

Original Articles

Off-Shell Longitudinal Photon Light-Cone Wavefunction in the Low-Energy Effective Theory of QCD

ZHU Kai; LIU Jue-Ping;YU Ran

College of Physics and Technology, Wuhan University, Wuhan 430072

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ZHU Kai, LIU Jue-Ping, YU Ran 2006 Chin. Phys. Lett. 23 1128-1131

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Abstract Within the framework of the low-energy effective theory arising from the instanton vacuum model of QCD, the longitudinal virtual photon light-cone wavefunction, Ф_γ||(u,P²), corresponding to the nonlocal quark--antiquark vector current is calculated at the low-energy scale. The coupling constant, F_γ(P²) or equivalently f_γ(P²), of the quark--antiquark vector current to the virtual photon state is also obtained by imposing the normalization condition to the photon wavefunction. The behaviour of the coupling constant as well as the obtained photon wavefunction is discussed.

Keywords: 11.15.Tk 11.55.Hx 12.38.Lg 14.70.Bh

Published: 01 May 2006

PACS:	11.15.Tk	(Other nonperturbative techniques)
	11.55.Hx	(Sum rules)
	12.38.Lg	(Other nonperturbative calculations)
	14.70.Bh	(Photons)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2006/V23/I5/01128

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