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相关论文: New approach to low energy Virtual Compton Scatter…

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The present experiment exploits the interference between the Deeply Virtual Compton Scattering (DVCS) and the Bethe-Heitler processes to extract the imaginary part of DVCS amplitudes on the neutron and on the deuteron from the…

核实验 · 物理学 2019-08-13 M. Mazouz , A. Camsonne , C. Muñoz Camacho

The three-dimensional structure of nucleons (protons and neutrons) is embedded in so-called generalized parton distributions, which are accessible from deeply virtual Compton scattering. In this process, a high energy electron is scattered…

We calculate the forward unpolarised doubly-virtual Compton scattering (VVCS) off the deuteron in the framework of pionless effective field theory, up to next-to-next-to-next-to-leading order (N3LO) for the longitudinal and next-to-leading…

核理论 · 物理学 2022-07-20 Vadim Lensky , Astrid Hiller Blin , Vladimir Pascalutsa

The proton is composed of quarks and gluons, bound by the most elusive mechanism of strong interaction called confinement. In this work, the dynamics of quarks and gluons are investigated using deeply virtual Compton scattering (DVCS):…

In this work we estimate the differential and total cross sections for the high energy deeply virtual Compton scattering in the weak sector. In the weak neutral sector one considers neutrino scattering off an unpolarized proton target…

高能物理 - 唯象学 · 物理学 2008-11-26 M. V. T. Machado

An interesting breakthrough in understanding the elusive inner content of nuclear systems in terms of partonic degrees of freedom is represented by deeply virtual Compton scattering processes. In such a way, tomographic view of nuclei and…

核理论 · 物理学 2019-10-22 Sara Fucini , Sergio Scopetta , Michele Viviani

We compute the cross section for leptoproduction of the real photon off the nucleon, which is sensitive to the deeply virtual Compton scattering amplitude with power accuracy. Our considerations go beyond the leading twist and involve the…

高能物理 - 唯象学 · 物理学 2009-11-07 A. V. Belitsky , D. Müller , A. Kirchner

We review the recent developments of virtual Compton scattering. We focus on the kinematical regimes which look the most promising. The threshold regime gives access to the generalized polarizabilities of the proton. The hard scattering…

高能物理 - 唯象学 · 物理学 2016-09-06 P. A. M. Guichon , M. Vanderhaeghen

At moderately low momentum transfer (-t up to 1 GeV^2) the coupling to the vector meson production channels gives the dominant contribution to real Compton and deeply virtual Compton scattering (DVCS). Starting from a Regge Pole approach…

高能物理 - 唯象学 · 物理学 2008-11-26 J. -M. Laget

We investigate the deeply virtual Compton scattering (DVCS) in the color dipole approach, implementing the dipole cross section through the saturation model, which interpolates successfully between soft and hard regimes. The imaginary and…

高能物理 - 唯象学 · 物理学 2011-09-13 L. Favart , M. V. T. Machado

The electromagnetic polarizabilities of the nucleon are fundamental properties that describe its response to external electric and magnetic fields. They can be extracted from Compton-scattering data --- and have been, with good accuracy, in…

Developments in deeply virtual Compton scattering allow the direct measurements of scattering amplitudes for exchange of a highly virtual photon with fine spatial resolution. Real-space images of the target can be obtained from this…

高能物理 - 唯象学 · 物理学 2014-11-17 John P. Ralston , Bernard Pire

We review the experimental and theoretical status of elastic electron scattering and elastic low-energy photon scattering (with both real and virtual photons) from the nucleon. As a consequence of new experimental facilities and new…

核实验 · 物理学 2008-11-26 Charles Earl Hyde-Wright , Kees de Jager

We study the double deeply virtual Compton scattering (DDVCS) process off the nucleon, through the scattering of a spacelike virtual photon with large virtuality resulting in the production of a timelike virtual photon, decaying into an e^+…

高能物理 - 唯象学 · 物理学 2016-09-06 M. Guidal , M. Vanderhaeghen

We study in QCD the physics of deeply-virtual Compton scattering (DVCS)---the virtual Compton process in the large s and small t kinematic region. We show that DVCS can probe a new type of off-forward parton distributions. We derive an…

高能物理 - 唯象学 · 物理学 2014-11-17 Xiangdong Ji

We perform a study of the doubly virtual Compton scattering off a spinless target gamma* P -> gamma* P' within the Anti-de Sitter(AdS)/QCD formalism. We find that the general structure allowed by the Lorentz invariance and gauge invariance…

高能物理 - 唯象学 · 物理学 2010-12-16 C. Marquet , C. Roiesnel , S. Wallon

We investigate the low-energy behavior of the four-point Green's function $\Gamma^{\mu\nu}$ describing virtual Compton scattering off the nucleon. Using Lorentz invariance, gauge invariance, and crossing symmetry, we derive the leading…

核理论 · 物理学 2008-11-26 S. Scherer , A. Yu. Korchin , J. H. Koch

Study of the structure and dynamics of the nucleon has been deeply renewed with the advent of a parameterization of the partonic structure of the nucleon in terms of the Generalized Parton Distributions (GPDs). Encoding the correlations…

高能物理 - 唯象学 · 物理学 2019-12-16 Shengying Zhao

We propose to conduct a measurement of the Virtual Compton Scattering reaction in Hall C that will allow the precise extraction of the two scalar Generalized Polarizabilities (GPs) of the proton in the region of $Q^2=0.05~(GeV/c)^2$ to…