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Basis light-front quantization approach to photon
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ISSN
03702693
Date Issued
2022-04-10
Author(s)
Nair, Sreeraj
Mondal, Chandan
Zhao, Xingbo
Mukherjee, Asmita
Vary, James P.
Abstract
We solve for the light-front wave functions (LFWFs) of the physical photon from the eigenvectors of the light-front quantum electrodynamics (QED) Hamiltonian with the aim to determine its bare photon and electron-positron Fock components. We then employ the resulting LFWFs to compute the transverse momentum dependent parton distributions (TMDs) and the generalized parton distributions (GPDs) at zero skewness of the photon. The TMDs are found to be in excellent agreement with the lowest-order perturbative results calculated using the electron-positron quantum fluctuation of the photon. The GPDs are also consistent with the perturbative calculations.
Volume
827
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