Generalized parton distributions in the soft-wall model of AdS/QCD

Sharma, Neetika

doi:10.1103/physrevd.90.095024

Cited by 15 publications

(20 citation statements)

References 86 publications

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“…However, the transverse densities defined at fixed light-front time have a proper density interpretation [99,100,101]. The charge densities in the transverse impact parameter plane for the nucleon have been discussed extensively in various phenomenological models [63,64,74,102,103,104,105,106,107,108,109], whereas the densities in the transverse coordinate plane have been studied in [110,111,112]. In [113], the deuteron transverse charge density has been evaluated using different parameterizations of the charge form factor and it has been shown that the different parameterizations provide different densities in particular at the center of the impact parameter (b = 0).…”

Section: Introductionmentioning

confidence: 99%

Deuteron transverse densities in holographic QCD

2017

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Abstract. We investigate the transverse charge density in the longitudinally as well as transversely polarized deuteron using the recent empirical description of the deuteron electromagnetic form factors in the framework of holographic QCD. The predictions of the holographic QCD are compared with the results of a standard phenomenological parameterization. In addition, we evaluate GPDs and the gravitational form factors for the deuteron. The longitudinal momentum densities are also investigated in the transverse plane. PACS

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Section: Introductionmentioning

confidence: 99%

Deuteron transverse densities in holographic QCD

2017

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“…[19]. In Fig.2, we compare the GFFs A(Q 2 ) and B(Q 2 ) for up and down quarks evaluated in the quarkdiquark model with the results obtained in a soft-wall AdS/QCD model [75] and the parametrization of GPDs based on latest global analysis by "MRST2009" [19]. We find that for both quarks, the quark-diquark model is in good agreement with the soft-wall model whereas for up quark, the diquark model deviates a little from the parametrization of GPDs.…”

Section: Gravitational Form Factorsmentioning

confidence: 99%

Gravitational form factors and angular momentum densities in light-front quark-diquark model

Kumar¹,

Mondal²,

Sharma³

2017

Eur. Phys. J. A

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We investigate the gravitational form factors (GFFs) and the longitudinal momentum densities (p + densities) for proton in a light-front quark-diquark model. The light-front wave functions are constructed from the soft-wall AdS/QCD prediction. The contributions from both the scalar and the axial vector diquarks are considered here. The results are compared with the consequences of a parametrization of nucleon generalized parton distributions (GPDs) in the light of recent MRST measurements of parton distribution functions (PDFs) and a soft-wall AdS/QCD model. The spatial distribution of angular momentum for up and down quarks inside the nucleon has been presented. At the density level, we illustrate different definitions of angular momentum explicitly for an up and down quark in the light-front quark-diquark model inspired by AdS/QCD. PACS. 14.20.Dh Protons and neutrons -12.39.-x Phenomenological quark models -13.40.Gp Electromagnetic form factors

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“…The flavor dependence of the transverse densities in different models of GPDs has been reported in [56,57].…”

Section: Introductionmentioning

confidence: 99%

Form factors and transverse charge and magnetization densities in the hard-wall AdS/QCD model

Mondal

2016

Phys. Rev. D

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We present a study of the flavor form factors in the framework of a hard-wall AdS/QCD model and compare with the available experimental data. We obtain the flavor form factors by decomposing the Dirac and Pauli form factors for the nucleons using the charge and isospin symmetry.Further, we present a detailed study of the flavor structures of the charge and anomalous magnetization densities in the transverse plane. Both the unpolarized and the transversely polarized nucleons are considered here. We compare the AdS/QCD results with two standard phenomenological parametrizations.

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Generalized parton distributions in the soft-wall model of AdS/QCD

Cited by 15 publications

References 86 publications

Deuteron transverse densities in holographic QCD

Deuteron transverse densities in holographic QCD

Gravitational form factors and angular momentum densities in light-front quark-diquark model

Form factors and transverse charge and magnetization densities in the hard-wall AdS/QCD model

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