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A light-front Quark Model for the electromagnetic form factor of the pion

J. P. B. C. de Melo·T. Frederico·E. Pace·G. Salme`
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Abstract

In this contribution, an approach for a unified description of the pion electromagnetic form factor, in the space- and time-like regions, within a constituent quark model on the light front, will be reviewed. Our approach is based on i) the on-shell quark-hadron vertex functions in the valence sector, ii) the dressed photon vertex where a photon decays in a quark-antiquark pair, and iii) the emission and absorption amplitudes of a pion by a quark. Results favorably compare with the existing experimental data.

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J. P. B. C. de Melo, T. Frederico, E. Pace, G. Salme`. 2005-03-01. A light-front Quark Model for the electromagnetic form factor of the pion. https://doi.org/10.1142/9789812701985_0018

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