Diffractive<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>ρ</mml:mi></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>ϕ</mml:mi></mml:mrow></mml:math>production at HERA using a holographic AdS/QCD light-front meson wave function

Ahmady, Mohammad; Sandapen, Ruben; Sharma, Neetika

doi:10.1103/physrevd.94.074018

Cited by 50 publications

(76 citation statements)

References 64 publications

(68 reference statements)

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“…Previous work [7,14,16] has shown that κ ≈ 0.5 GeV for light mesons. Specifically, we shall take the most recent universal value κ = 523 MeV which fits the meson/baryon Regge slopes [17] and accurately predicts Λ MS QCD [18].…”

Section: Quark Masses and Helicitiesmentioning

confidence: 99%

Dynamical spin effects in the pion

Ahmady¹,

Sandapen²,

Chishtie³

2017

AIP Conference Proceedings

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Section: Quark Masses and Helicitiesmentioning

confidence: 99%

Dynamical spin effects in the pion

Ahmady¹,

Sandapen²,

Chishtie³

2017

AIP Conference Proceedings

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“…LF holography have been used to study the structure of hadron properties, such as the hadron mass spectrum, parton distribution functions, meson and baryon form factors etc. [8,30,32,[34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50]. In particular, the formalism was recently applied to the study of the nucleon [51][52][53][54][55][56][57] and Roper [31,32,58] electromagnetic structure.…”

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confidence: 99%

Valence quark contributions for the γ*N→N(1440) form factors from light-front holography

Ramalho

Melnikov

2018

Phys. Rev. D

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The structure of the nucleon and the first radial excitation of the nucleon, the Roper, Nð1440Þ, is studied within the formalism of light-front holography. The nucleon elastic form factors and γ Ã N → Nð1440Þ transition form factors are calculated under the assumption of the dominance of the valence quark degrees of freedom. Contrary to the previous studies, the bare parameters of the model associated with the valence quark are fixed by the empirical data for large momentum transfer (Q 2 ) assuming that the corrections to the three-quark picture (meson cloud contributions) are suppressed. The γ Ã N → Nð1440Þ transition form factors are then calculated without any adjustable parameters. Our estimates are compared with results from models based on valence quarks and others. The model compares well with the γ Ã N → Nð1440Þ transition form factor data, suggesting that meson cloud effects are not large, except in the region Q 2 < 1.5 GeV 2 . In particular, the meson cloud contributions for the Pauli form factor are small.

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“…From experimental point of view, diffractive photo production and electroproduction of the ρ meson is extensively studied at HERA H1 experiment [24][25][26][27][28][29][30]. In addition to in holographic QCD [66][67][68][69][70].…”

Section: Introductionmentioning

confidence: 99%

Transverse densities and generalized parton distributions of the ρ meson in the light front quark model

Kumar

2019

Phys. Rev. D

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We have investigated the transverse charge density for longitudinal and transversely polarized ρ meson in light-front quark model (LFQM). Charge densities are obtained from the elastic form factors of the ρ meson calculated in LFQM including the zero-mode contributions. We have computed the different helicity matrix elements of the ρ meson. In addition to this, we have also presented the results for the generalized parton distributions (GPDs) and impact-parameter dependent parton distribution functions (ipdpdfs) of the ρ meson. 1 arXiv:1901.02836v1 [hep-ph] 9 Jan 2019 this, ρ meson light-front wavefunctions (LFWFs) is also extracted using HERA data on diffractive ρ photoproduction [31]. Space-like and time-like γ * π → ρ and γ * ρ → π transition form factors are also studied in light-cone formalism [32]. Recently, Sun et al. have also discussed the generalized parton distributions and parton distributions in impact-parameter for ρ meson [33, 34]. Recently, AdS/QCD formalism has been successfully applied to various hadronic properties like, generalized parton distributions (GPDs), parton distribution functions (PDFs), form factors and transverse densities [35-65]. Regarding spin-1 particle like ρ meson, a lot of work has been done

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Diffractiveρandϕproduction at HERA using a holographic AdS/QCD light-front meson wave function

Cited by 50 publications

References 64 publications

Dynamical spin effects in the pion

Dynamical spin effects in the pion

Valence quark contributions for the γ*N→N(1440) form factors from light-front holography

Transverse densities and generalized parton distributions of the ρ meson in the light front quark model

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