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An analytical study with respect to the nonlinear corrections for the nuclear gluon distribution function in the next-to-leading order approximation at small $x$ is presented. We consider the nonlinear corrections to the nuclear gluon…

High Energy Physics - Phenomenology · Physics 2024-02-08 G. R. Boroun , B. Rezaei , F. Abdi

The evolution of the EMC effect as a function of atomic mass $A$ is considered for the first time for the lightest nuclei, D, $^3H$, $^3He$ and $^4He$, with an approach based on the Bethe-Salpeter formalism. We show that the pattern of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 V. V. Burov , A. V. Molochkov , G. I. Smirnov

We computed the longitudinal proton structure function $F_{L}$, using the nonlinear Dokshitzer-Gribov-Lipatov-Altarelli-parisi (NLDGLAP) evolution equation approach at small $x$. For the gluon distribution, the nonlinear effects are related…

High Energy Physics - Phenomenology · Physics 2014-02-07 G. R. Boroun

In coordinate space, quark and gluon distributions of the nucleon are defined as correlation functions involving two field operators separated by a light-cone distance $y^+ = 2l$. We study the nuclear modifications of these distributions.…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. Vänttinen , G. Piller , L. Mankiewicz , W. Weise , K. J. Eskola

Using the leading twist approach to nuclear shadowing, which is based on the relationship between nuclear shadowing and diffraction on a nucleon, we calculate next-to-leading order nuclear parton distribution functions (nPDFs) and structure…

High Energy Physics - Phenomenology · Physics 2011-07-19 L. Frankfurt , V. Guzey , M. Strikman

We investigate the influence of modified nuclear parton distribution functions (PDFs) on high-pT hadron production at RHIC and LHC energies using a pQCD-improved parton model. For application at RHIC, we focus on the possible contribution…

High Energy Physics - Phenomenology · Physics 2007-05-23 B. A. Cole , G. G. Barnafoldi , P. Levai , G. Papp , G. Fai

The quark exchange model (QEM) is reformulated for the $A=12$ and $14$ systems to obtain the constituent quark distributions of $^{12}C$ and $^{14}N$ nuclei, respectively. Afterwards, the different types of the point-like parton…

Nuclear Theory · Physics 2021-08-09 A. Hadian , M. Modarres

The evolution of the nucleon structure as a function of atomic mass A is considered for the first time for the lightest nuclei, D, 3H, 3He and 4He, with an approach based on the Bethe-Salpeter formalism. We show that the pattern of the…

Nuclear Theory · Physics 2009-10-31 V. V. Burov , A. V. Molochkov , G. I. Smirnov

We study the nuclear ($A$) dependence of the European Muon Collaboration (EMC) effect at high values of $x$ ($x \geq 0.6$). Our approach makes use of conventional nuclear degrees of freedom within the Relativistic Impulse Approximation. By…

High Energy Physics - Phenomenology · Physics 2014-11-17 Simonetta Liuti , Franz Gross

Since the discovery that the ratio of inclusive charged lepton (per-nucleon) cross sections from a nucleus A to the deuteron is not unity - even in deep inelastic scattering kinematics - a great deal of experimental and theoretical effort…

Nuclear Experiment · Physics 2014-08-19 Simona Malace , David Gaskell , Douglas W. Higinbotham , Ian Cloet

We explore how nuclear modifications to the free nucleon structure functions (also known as shadowing) affect heavy quark production in collisions at different impact parameters. We assume that the nuclear modifications arise from a density…

Nuclear Theory · Physics 2014-11-18 V. Emel'yanov , A. Khodinov , S. R. Klein , R. Vogt

We incorporate the perturbative evolution effects in the generalized parton distributions (GPDs) calculated in effective light-front quark model for the nucleon. The perturbative effects enters into formalism through the evolution of GPDs…

High Energy Physics - Phenomenology · Physics 2016-04-20 Neetika Sharma

We analyze the role of nuclear modifications of parton distributions, notably, the nuclear shadowing and antishadowing corrections, in production of lepton pairs from decays of neutral electroweak gauge bosons in proton-lead and…

High Energy Physics - Phenomenology · Physics 2015-06-12 Vadim Guzey , Marco Guzzi , Pavel M. Nadolsky , Mark Strikman , Bowen Wang

A systematic determination of the gluon distribution is of fundamental interest in understanding the parton structure of nuclei and the QCD dynamics. Currently, the behavior of this distribution at small $x$ (high energy) is completely…

High Energy Physics - Phenomenology · Physics 2008-11-26 E. R. Cazaroto , F. Carvalho , V. P. Goncalves , F. S. Navarra

In this work, we propose a method to quantify the difference between nuclear parton distribution functions in different nuclei and parton distribution functions in free nucleons using the relative entropy (also known as Kullback-Leibler…

High Energy Physics - Phenomenology · Physics 2026-05-12 Shu-Man Hu , Ao-Sheng Xiong , Ji Xu , Fu-Sheng Yu , Ji-Xin Yu

We generalize the leading twist theory of nuclear shadowing and calculate quark and gluon generalized parton distributions (GPDs) of spinless nuclei. We predict very large nuclear shadowing for nuclear GPDs. In the limit of the purely…

High Energy Physics - Phenomenology · Physics 2009-05-05 K. Goeke , V. Guzey , M. Siddikov

Modified quark fragmentation functions in deeply inelastic $eA$ collisions and their QCD evolution equations are derived for the first time in the framework of multiple parton scattering. Induced radiation gives rise to additional terms in…

High Energy Physics - Phenomenology · Physics 2008-11-26 Xiaofeng Guo , Xin-Nian Wang

We determine the quark distributions and structure functions for both unpolarized and polarized DIS of leptons on nucleons and nuclei. The scalar and vector mean fields in the nucleus modify the motion of the quarks inside the nucleons. By…

Nuclear Theory · Physics 2008-11-26 W. Bentz , I. C. Cloët , T. Ito , A. W. Thomas , K. Yazaki

Recent data for the slope of the EMC-ratio in the intermediate $x$-region for {\em light} nuclei, with $3 \leq A \leq 12$, have the potential to shed new light on the origin of the EMC effect. Here we study the role of nuclear binding using…

Nuclear Theory · Physics 2012-07-20 Omar Benhar , Ingo SIck

We study the response of a nucleus composed of nucleons and confined quarks. Assuming dynamics implied by a non-relativistic cluster model, we prove that the total response is a convolution of the responses of, respectively, a nucleus with…

Nuclear Theory · Physics 2009-09-25 S. A. Gurvitz , A. S. Rinat
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