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相关论文: Small-x Evolution of the Gluon Generalized Parton …

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We calculate all leading-twist gluon generalized parton distributions (GPDs) inside the proton at nonzero skewness using the basis light-front quantization framework. The proton's light-front wave functions are derived from a light-front…

高能物理 - 唯象学 · 物理学 2025-01-20 Pengxiang Zhang , Yiping Liu , Siqi Xu , Chandan Mondal , Xingbo Zhao , James P. Vary

We determined the saturation exponent of the gluon distribution using the solution of the QCD nonlinear Dokshitzer-Gribov-Lipatov-Altarelli-parisi (NLDGLAP) evolution equation at small $x$. The very small $x$ behavior of the gluon…

高能物理 - 唯象学 · 物理学 2014-02-06 G. R. Boroun

The corrections of the gluon fusion to the BFKL equation in a unified partonic framework are studied. This modified BFKL equation predicts a stronger shadowing, which suppresses the gluon density and even leads to the gluon disappearance…

高能物理 - 唯象学 · 物理学 2016-03-10 Wei Zhu , Zhenqi Shen , Jianhong Ruan

Analysing the asymptotic behaviour of the quark-quark elastic scattering amplitude at high energy and fixed transferred momentum and assuming that gluon is reggeized, we obtain the evolution equation for the gluon Regge trajectory in QCD.…

高能物理 - 唯象学 · 物理学 2009-10-28 I. A. Korchemskaya , G. P. Korchemsky

We introduce a generalized definition of parton distribution functions (PDFs) for a more consistent all-order treatment of power corrections. We present a new set of modified DGLAP evolution equations for nuclear PDFs, and show that the…

高能物理 - 唯象学 · 物理学 2008-11-26 Zhong-Bo Kang , Jian-Wei Qiu

We investigate the Generalized Parton Distributions(GPDs) of proton by expressing them in terms of overlaps of light front wave functions (LFWFs) using a simulated model which is able to qualitatively improve the convergence near the end…

高能物理 - 唯象学 · 物理学 2015-01-21 Narinder Kumar , Harleen Dahiya

We present a general analysis of the orbital angular momentum (OAM) distribution of gluons $L_g(x)$ inside the nucleon with particular emphasis on the small-$x$ region. We derive a novel operator representation of $L_g(x)$ in terms of…

高能物理 - 唯象学 · 物理学 2017-07-05 Yoshitaka Hatta , Yuya Nakagawa , Bowen Xiao , Feng Yuan , Yong Zhao

We present numerical studies of the leading non-linear corrections to the DGLAP evolution equations of parton distribution functions (PDFs) resulting from gluon recombination, which reduce the pace of evolution at small momentum fractions…

高能物理 - 唯象学 · 物理学 2024-06-21 Pit Duwentäster , Vadim Guzey , Ilkka Helenius , Hannu Paukkunen

We solve for the gluon generalized parton distributions (GPDs) inside the proton, focusing specifically on leading twist chiral-even GPDs. We obtain and employ the light-front wavefunctions (LFWFs) of the proton from a light-front quantized…

高能物理 - 唯象学 · 物理学 2023-08-17 Bolang Lin , Sreeraj Nair , Siqi Xu , Zhi Hu , Chandan Mondal , Xingbo Zhao , James P. Vary

We show that combining forward and backward evolution allows to extract the residues of the triple-pole pomeron and of the other singularities for 10 GeV$^2 \le Q^2 \le 1000$ GeV$^2$. In this approach, the essential singularity generated by…

高能物理 - 唯象学 · 物理学 2014-11-17 G. Soyez

The spin structure function $g_1^p$ of the proton is studied in a two component framework, where the perturbative evolution of parton distributions and nonperturbative vector meson dominance model are used. We predict the $g_1^p$ asymmetric…

高能物理 - 唯象学 · 物理学 2015-03-10 Wei Zhu , Jianhong Ruan

Employing the representation of the experimental data on deep inelastic electron-proton scattering (DIS) in the color-dipole picture (CDP), we determine the gluon distribution of the proton at small Bjorken $x$. At sufficiently large…

高能物理 - 唯象学 · 物理学 2025-12-02 G. R. Boroun , M. Kuroda , Dieter Schildknecht

We obtain the gluon parton distribution functions (PDFs) in the proton within the extended light-front holographic QCD framework, where the proton couples with the spin-two Pomeron in Anti-de Sitter space, together with constraints imposed…

高能物理 - 唯象学 · 物理学 2023-03-29 Bheemsehan Gurjar , Chandan Mondal , Dipankar Chakrabarti

We study how the rapidity evolution of gluon transverse momentum dependent distribution changes from nonlinear evolution at small $x\ll 1$ to linear double-logarithmic evolution at moderate $x\sim 1$.

高能物理 - 唯象学 · 物理学 2015-06-23 I. Balitsky , A. Tarasov

In this paper we make predictions for nondiagonal parton distributions in a proton in the LLA. We calculate the DGLAP-type evolution kernels in the LLA, solve the nondiagonal GLAP evolution equations with a modified version of the…

高能物理 - 唯象学 · 物理学 2014-11-17 L. L. Frankfurt , A. Freund , V. Guzey , M. Strikman

In this paper we have solved the nonlinear Gribov-Levin-Ryskin-Mueller-Qiu (GLR-MQ) evolution equation for gluon distribution function G(x,Q^2) and studied the effects of the nonlinear GLR-MQ corrections to the Leading Order (LO)…

高能物理 - 唯象学 · 物理学 2014-02-24 Mayuri Devee , J. K. Sarma

We propose a new evolution equation for the gluon density relevant for the region of small $x_B$. It generalizes the GLR equation and allows deeper penetration in dense parton systems than the GLR equation does. This generalization consists…

高能物理 - 唯象学 · 物理学 2009-09-25 E. Laenen , E. Levin

We argue that the amount of baryon stopping observed in the central rapidity region of heavy ion collisions at RHIC is proportional to the nuclear valence quark distributions at small x. By generalizing Mueller's dipole model to describe…

高能物理 - 唯象学 · 物理学 2011-01-25 Kazunori Itakura , Yuri V. Kovchegov , Larry McLerran , Derek Teaney

The enhanced suppression of $J/\psi$ production at large $x_F$ in $pA$ collisions is studied in the framework of gluon depletion at large $x_1$. The nonperturbative process that modifies the gluon distribution as the gluons propagate in…

核理论 · 物理学 2009-11-07 Rudolph C. Hwa , Jan Pisut , Neva Pisutova

We give a brief overview of the General Parton Distributions(GPDs), including their properties, connections to conventional quantities, and relationships to physical observables. We also perform a systematic analysis on the non-forward…

高能物理 - 唯象学 · 物理学 2007-05-23 Zhang Chen