Basis light-front quantization approach to photon
Sreeraj Nair, Chandan Mondal, Xingbo Zhao, Asmita Mukherjee, James P. Vary
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.
Topics & Concepts
PhysicsPartonPhotonQuantum electrodynamicsHamiltonian (control theory)Quantization (signal processing)Momentum (technical analysis)ElectronQuantum mechanicsParticle physicsQuantum chromodynamicsComputer visionMathematicsFinanceMathematical optimizationComputer scienceEconomicsQuantum Chromodynamics and Particle InteractionsParticle physics theoretical and experimental studiesHigh-Energy Particle Collisions Research