The D-term form factor from dispersion relations in deeply virtual Compton scattering

Pasquini, B.

doi:10.22323/1.346.0071

Cited by 3 publications

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different approaches based on various forms of dispersion relations (see, e.g., [15,16] and references therein), that is on quite general principles of the quantumfield theory, can be considered as "maximal modelindepemdent" approaches. The D term was calculated using unsubtracted t-channel dispersion relations for the deeply virtual Compton scattering amplitudes [15].…”

Section: Introductionmentioning

confidence: 99%

Pion gravitational form factors in a relativistic theory of composite particles

Krutov,

Troitsky

2020

Preprint

View full text Add to dashboard Cite

We extend our relativistic theory of electroweak properties of composite systems to describe simultaneously the gravitational form factors of hadrons. The approach is based on a version of the instant-form relativistic quantum mechanics and makes use of the modified impulse approximation. We exploit the general method of the relativistic invariant parametrizaton of local operators to write the energy-momentum tensor of a particle with an arbitrary spin. We use the obtained results to calculate the gravitational form factors of the pion assuming point-like constituent quarks. All but one parameters of our first-principle model were fixed previously in works on electromagnetic form factors. The only free parameter, Dq, is a characteristic of the gravitational form factor of a constituent quark. The derived form factors of the pion satisfy the constraints given by the general principles of the quantum field theory of hadron structure. The calculated gravitational form factors and gravitational mean-square radius are in a good agreement with known results. The results demonstrate self-consistency of a common relativistic approach to electromagnetic and gravitational form factors of pion.

show abstract

Section: Introductionmentioning

confidence: 99%