Rosenbluth nonlinearity from two-photon exchange

Abidin, Zainul; Carlson, Carl E.

doi:10.1103/physrevd.77.037301

Cited by 48 publications

(84 citation statements)

References 26 publications

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“…GPDs for the deuteron have been studied based on a phenomenological effective Lagrangian approach in [52]. The gravitational form factors of spin-1 particles have been evaluated using a holographic model of QCD in [53] where via sum rules, the connection of gravitational form factors to GPDs has also been established. Recently, Gutsche et.…”

Section: Introductionmentioning

confidence: 99%

“…Though AdS/QCD gives only the semiclassical approximation of QCD, so far this formalism has been successfully applied to describe various hadronic properties e.g., hadron mass spectrum, parton distribution functions (PDFs), generalized parton distribution functions (GPDs), meson and nucleon form factors, transverse densities, structure functions etc. [53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85]. In nuclear physics, there are also some applications of holographic QCD such as holographic nuclear matter [86], ρ meson condensation at finite isospin chemical potential [87], nuclear matter to strange matter transition [88], baryon matter at finite temperature and baryon number density [89], cold nuclear matter [90], heavy atomic nuclei [91], mean-field theory for baryon many-body systems [92].…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Introductionmentioning

confidence: 99%

Deuteron transverse densities in holographic QCD

2017

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“…Though it gives only a semiclassical approximation of QCD, so far this method has been successfully applied to describe many hadron properties e.g., hadron mass spectrum, parton distribution functions, GPDs, meson and nucleon form factors, structure functions etc. [18,[22][23][24][25][26][27][28][29][30][31][32][33]. AdS/QCD wave functions are used to predict the experimental data for ρ meson electroproduction [34].…”

Section: Introductionmentioning

confidence: 99%

Transverse charge and magnetization densities in holographic QCD

Chakrabarti

Mondal

2014

Eur. Phys. J. C

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We present a study of the flavor structures of the transverse charge and anomalous magnetization densities for both unpolarized and transversely polarized nucleons. We consider two different models for the electromagnetic form factors in holographic QCD. The flavor form factors are obtained by decomposing the Dirac and Pauli form factors for the nucleons using the charge and isospin symmetry. The results are compared with two standard phenomenological parametrizations.

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“…The AdS mass parameter µR maps to the LF orbital angular momentum. The formulae for electromagnetic [82] and gravitational [83] form factors in AdS space map to the exact Drell-Yan-West formulae in light-front QCD [84][85][86].…”

Section: Light-front Holographymentioning

confidence: 99%

QCD on the Light-Front

2013

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Light-Front Hamiltonian theory, derived from the quantization of the QCD Lagrangian at fixed light-front time x + = x 0 + x 3 , provides a rigorous frame-independent framework for solving nonperturbative QCD. The eigenvalues of the light-front QCD Hamiltonian HLF predict the hadronic mass spectrum, and the corresponding eigensolutions provide the light-front wavefunctions which describe hadron structure, providing a direct connection to the QCD Lagrangian. In the semiclassical approximation the valence Fock-state wavefunctions of the light-front QCD Hamiltonian satisfy a single-variable relativistic equation of motion, analogous to the nonrelativistic radial Schrödinger equation, with an effective confining potential U which systematically incorporates the effects of higher quark and gluon Fock states. Remarkably, the potential U has a unique form of a harmonic oscillator potential if one requires that the chiral QCD action remains conformally invariant. A mass gap and the color confinement scale also arises when one extends the formalism of de Alfaro, Fubini and Furlan to light-front Hamiltonian theory. In the case of mesons, the valence Fock-state wavefunctions of HLF for zero quark mass satisfy a single-variable relativistic equation of motion in the invariant variable ζ 2 = b 2 ⊥ x(1−x), which is conjugate to the invariant mass squared M 2 qq . The result is a nonperturbative relativistic light-front quantum mechanical wave equation which incorporates color confinement and other essential spectroscopic and dynamical features of hadron physics, including a massless pion for zero quark mass and linear Regge trajectories M 2 (n, L, S) = 4κ 2 (n+L+S/2) with the same slope in the radial quantum number n and orbital angular momentum L. Only one mass parameter κ appears. The corresponding light-front Dirac equation provides a dynamical and spectroscopic model of nucleons. The same light-front equations arise from the holographic mapping of the soft-wall model modification of AdS5 space with a unique dilaton profile to QCD (3+1) at fixed light-front time. Light-front holography thus provides a precise relation between the bound-state amplitudes in the fifth dimension of AdS space and the boost-invariant light-front wavefunctions describing the internal structure of hadrons in physical space-time. We also discuss the implications of the underlying conformal template of QCD for renormalization scale-setting and the implications of light-front quantization for the value of the cosmological constant.

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Rosenbluth nonlinearity from two-photon exchange

Abstract: We calculate, using a generalized parton distribution based formalism, the nonlinearity of the Rosenbluth plots that arise from hard two-photon exchange corrections that are not included in the classic calculations of the radiative corrections to electron-proton elastic scattering.

Cited by 48 publications

References 26 publications

Deuteron transverse densities in holographic QCD

Deuteron transverse densities in holographic QCD

Transverse charge and magnetization densities in holographic QCD

QCD on the Light-Front

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