Dispersion representation of the D-term form factor in deeply virtual Compton scattering
1 Dipartimento di Fisica, Università degli Studi di Pavia, Pavia, Italy
2 Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, Pavia, Italy
a e-mail: email@example.com
Published online: 21 March 2016
We review the dispersion relation formalism for the deeply virtual Compton scattering amplitudes, and derive a dispersive representation of the D-term form factor, using unsubtracted t-channel dispersion relations. Results for the D-term form factor as function of t as well as at t = 0 are shown in comparison with available model predictions and phenomenological parametrizations.
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