A modified non-separable LFWF ansatz for pseudoscalar heavy quarkonia enables computation of zero-skewness GPDs, EM and gravitational form factors, and transverse distributions within the Schwinger-function framework.
Interaction model for the gap equation
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abstract
We explain a form for the rainbow-ladder kernel whose momentum-dependence is consonant with modern DSE- and lattice-QCD results, and assess its capability as a tool in hadron physics. In every respect tested, this form produces results for observables that are at least equal to the best otherwise obtained in a comparable approach. Moreover, it enables the natural extraction of a monotonic running-coupling and -gluon-mass.
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Pseudoscalar charmonium and bottomonium: light-front wave functions, distribution amplitudes and distribution functions
A modified non-separable LFWF ansatz for pseudoscalar heavy quarkonia enables computation of zero-skewness GPDs, EM and gravitational form factors, and transverse distributions within the Schwinger-function framework.