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相关论文: Measurement of deeply virtual Compton scattering (…

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Using a soft pion theorem based on chiral symmetry and a $\Delta(1232)$ resonance model we propose an estimate for the production cross section of low energy pions in the deeply virtual Compton scattering (DVCS) process. In particular, we…

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

We overview the construction of Nonforward Parton Distributions (NPD) in Deeply Virtual Compton Scattering (DVCS). Then we turn to the analysis of similar constructs in the weak sector (electroweak NPD's). We argue in favour of a possible…

高能物理 - 唯象学 · 物理学 2007-05-23 Claudio Coriano` , G. Chirilli , Marco Guzzi

Several observables for the deeply virtual Compton scattering process have been simulated in the kinematic regime of a proposed Electron-Ion Collider to explore the possible impact of such measurements for the phenomenological access of…

高能物理 - 唯象学 · 物理学 2015-06-15 Elke-Caroline Aschenauer , Salvatore Fazio , Kresimir Kumericki , Dieter Mueller

The factorization of the amplitude for the deeply virtual Compton scattering (DVCS) process gamma*(Q) gamma -> gamma gamma at high Q2 is demonstrated in two distinct kinematical domains, allowing to define the photon generalized parton…

高能物理 - 唯象学 · 物理学 2009-01-14 M. El Beiyad , S. Friot , B. Pire , L. Szymanowski , S. Wallon

In this paper, I will explain in as simple and intuitive physical terms as possible what generalized parton distributions are, what new information about the structure of hadrons they convey and therefore what picture of the hadron will…

高能物理 - 唯象学 · 物理学 2009-11-07 A. Freund

Background: Generalized polarizabilities (GPs) are important observables to describe the nucleon structure, and measurements of these observables are still scarce. Purpose: This paper presents details of a virtual Compton scattering (VCS)…

Prospects for future measurements of Deeply Virtual Compton Scattering at HERMES are studied using different simple models for parameterizations of generalized parton distributions (GPDs). Measurements of the lepton charge and lepton beam…

高能物理 - 唯象学 · 物理学 2011-09-13 V. A. Korotkov , W. -D. Nowak

This review gives an update on virtual Compton scattering (VCS) off the nucleon, $\gamma^* N \to N \gamma$, in the low-energy regime. We recall the theoretical formalism related to the generalized polarizabilities (GPs) and model…

核实验 · 物理学 2020-07-15 H. Fonvieille , B. Pasquini , N. Sparveris

We describe small-x_Bj deeply virtual Compton scattering measurements at HERA in terms of generalized parton distributions at leading order of perturbation series.

高能物理 - 唯象学 · 物理学 2009-01-09 Kresimir Kumericki , Dieter Mueller , Kornelija Passek-Kumericki

This paper presents our project and perspectives to measure for the first time beam spin asymmetries from Double Deeply Virtual Compton Scattering in the $eP\to e'P' \mu^+\mu^-$ reaction at Jefferson Lab. Our goal is to constrain the…

核实验 · 物理学 2024-03-06 Marie Boër , Debaditya Biswas

We review recent progress in the study of timelike Compton scattering (TCS), the crossed process of deeply virtual Compton scattering. We emphasize the need to include NLO corrections to any phenomenological program to extract Generalized…

高能物理 - 唯象学 · 物理学 2012-06-11 Bernard Pire , Lech Szymanowski , Jakub Wagner

Exclusive photoproduction of dileptons, gamma N ->l+l- N, is and will be measured in ultraperipheralcollisions at hadron colliders. We demonstrate that the timelike deeply virtual Compton scattering (TCS) mechanism gamma q -> l+l- q, where…

高能物理 - 唯象学 · 物理学 2014-11-18 B. Pire , L. Szymanowski , J. Wagner

We propose new parameterizations for the border and skewness functions appearing in the description of 3D nucleon structure in the language of Generalized Parton Distributions (GPDs). These parameterizations are constructed in a way to…

高能物理 - 唯象学 · 物理学 2019-07-25 H. Moutarde , P. Sznajder , J. Wagner

While the chiral-even content of the nucleon is better and better studied, the chiral-odd transversity generalized parton distributions (GPDs) remain almost unknown. These GPDs can be accessed experimentally through the exclusive…

高能物理 - 唯象学 · 物理学 2010-11-22 M. El Beiyad , B. Pire , M. Segond , L. Szymanowski , S. Wallon

We present our current progress in the holographic computation of the scattering amplitude for Deeply Virtual Compton Scattering (DVCS) processe, as a function of the Mandelstam invariant $t$. We show that it is possible to describe…

高能物理 - 唯象学 · 物理学 2021-07-07 Artur Amorim , Miguel S. Costa , Robert C. Quevedo

Deeply Virtual Compton Scattering in the near forward kinematic region is the golden access to Generalized Parton Distributions. We studied the O(alphaS) corrections to the scattering amplitude for both spacelike and timelike kinematics…

高能物理 - 唯象学 · 物理学 2015-06-18 H. Moutarde , B. Pire , F. Sabatié , L. Szymanowski , J. Wagner

We propose measurements of the deeply virtual Compton amplitude (DVCS), gamma* to H H-bar gamma, in the timelike t = (p_{H} + p_{H-bar})^2 > 0 kinematic domain which is accessible at electron-positron colliders via the radiative…

高能物理 - 唯象学 · 物理学 2010-03-04 Andrei Afanasev , Stanley J. Brodsky , Carl E. Carlson , Asmita Mukherjee

In our work, we describe two types of Compton processes. As an example of an inclusive process, we consider the high-energy photoproduction of massive muon pairs off the nucleon. We analyze the process in the framework of the QCD parton…

高能物理 - 唯象学 · 物理学 2007-05-23 Ales Psaker

We investigate the QED Compton process (QEDCS) in longitudinally polarized lepton-proton scattering both in the elastic and inelastic channels and show that the cross section can be expressed in terms of the polarized equivalent photon…

高能物理 - 唯象学 · 物理学 2009-04-15 A. Mukherjee , C. Pisano

In this work we estimate the differential cross section for the high energy deeply virtual Compton scattering on a photon target within the QCD dipole-dipole scattering formalism. For the phenomenology, a saturation model for the…

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