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The momentum distributions of partons in bound nucleons are known to depend significantly on the size of the nucleus. The Fourier transform of the momentum ($\xbj$) distribution measures the overlap between Fock components of the nucleon…

High Energy Physics - Phenomenology · Physics 2010-11-19 P. Hoyer , M. Vänttinen

In the rest frame of the nucleus, shadowing is due to hadronic fluctuations of the incoming virtual photon, which interact with the nucleons. We expand these fluctuations in a basis of eigenstates of interaction and take only the $q\bar q$…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. Raufeisen , A. V. Tarasov , O. O. Voskresenskaya

The relativistic structure of the self-energy of a nucleon in nuclear matter is investigated including the imaginary and real components which arise from the terms of first and second order in the NN interaction. A parameterized form of…

Nuclear Theory · Physics 2009-10-30 A. Trasobares , A. Polls , A. Ramos , H. Müther

Effect of nuclear medium on the weak structure functions $F_2^A(x,Q^2)$ and $F_3^A(x,Q^2)$ have been studied using charged current (anti)neutrino deep inelastic scattering on various nuclear targets. Relativistic nuclear spectral function…

Nuclear Theory · Physics 2013-03-26 H. Haider , I. Ruiz Simo , M. Sajjad Athar

We study how much gluon shadowing can be perturbatively generated through the modified QCD evolution in heavy nuclei. The evolution of small-$x$ gluons is investigated within the semiclassical approximation. The method of characteristics is…

Nuclear Theory · Physics 2010-11-01 K. J. Eskola , Jianwei Qiu , Xin-Nian Wang

We show that nucleon electromagnetic structure functions of deep inelastic scattering in Regge-Gribov limit (fixed Q-squared, asymptotically large 1/x and s) can be well described in the two-component (soft + hard) approach. In the concrete…

High Energy Physics - Phenomenology · Physics 2015-06-05 E. V. Bugaev , B. V. Mangazeev

We argue that with an increase of the collision energy, elastic photoproduction of $\rho$ mesons on nuclei becomes affected by the significant cross section of photon inelastic diffraction into large masses, which results in the sizable…

High Energy Physics - Phenomenology · Physics 2016-01-26 L. Frankfurt , V. Guzey , M. Strikman , M. Zhalov

A two component model describing the electromagnetic nucleon structure functions in the low-x region, based on generalized vector dominance and color dipole approaches is briefly described.

High Energy Physics - Phenomenology · Physics 2017-08-23 E. V. Bugaev , B. V. Mangazeev

In this paper, the parametrization of the nuclear structure function which is directly constrained by the dynamics of QCD in its high-energy limit is considered. This simple parameterization of the nuclear structure function is obtained…

High Energy Physics - Phenomenology · Physics 2023-03-08 G. R. Boroun , B. Rezaei

Shadowing is a quantum phenomenon leading to a non-additivity of electroweak cross sections on nucleons bound in a nucleus. It occurs due to destructive interference of amplitudes on different nucleons. Although the current experimental…

High Energy Physics - Phenomenology · Physics 2012-11-26 B. Z. Kopeliovich , J. G. Morfin , Ivan Schmidt

Compact and well defined formulae for the shadow of the virtual photon interacting with a large nucleus at small $x_{Bj}$ are given in the QCD dipole picture. Two classes of contributions are considered: (a) quasi-elastic interaction of the…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Bialas , W. Czyz

In this contribution we present an exploratory QCD analysis of the neutrino structure functions in charged current DIS using the color dipole formalism. The corresponding dipole cross sections are taken from recent phenomenological and…

High Energy Physics - Phenomenology · Physics 2011-08-04 M. B. Gay Ducati , M. M. Machado , M. V. T. Machado

We review predictions of the theory of leading twist nuclear shadowing for inclusive unpolarized and polarized deuteron structure functions F_2^D, g_1^D and b_1^D and for the tagged deuteron structure function F_2^D(x,Q^2,\vec{p}). We…

High Energy Physics - Phenomenology · Physics 2009-11-11 L. Frankurt , V. Guzey , M. Strikman

Recent measurement of the structure function $F_2^\nu$ in neutrino deep inelastic scattering allows us to compare structure function measured in neutrino and charged lepton scattering for the first time with reasonable precision. The…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. Boros

We discuss shadowing corrections to the structure function $F_2$ in neutrino deep-inelastic scattering on heavy nuclear targets. In particular, we examine the role played by shadowing in the comparison of the structure functions $F_2$…

High Energy Physics - Phenomenology · Physics 2010-02-17 C. Boros , J. T. Londergan , A. W. Thomas

We use several diverse parameterizations of diffractive parton distributions, extracted in leading twist QCD analyses of the HERA diffractive deep inelastic scattering (DIS) data, to make predictions for leading twist nuclear shadowing of…

High Energy Physics - Phenomenology · Physics 2014-11-17 L. Frankfurt , V. Guzey , M. McDermott , M. Strikman

The nuclear shadowing and antishadowing effects are explained by a unitarized BFKL equation. The $Q^2$- and $x$-variations of the nuclear parton distributions are detailed based on the level of the unintegrated gluon distribution. In…

High Energy Physics - Phenomenology · Physics 2015-05-13 Jianhong Ruan , Zhenqi Shen , Wei Zhu

The recent high statistics NMC data on the Tin to Carbon structure function ratio seems to indicate, for the first time, a significant $Q^2$ dependence, especially at small values of Bjorken $x$, $x < 0.05$, and $Q^2 > 1 GeV^2$. Pure…

High Energy Physics - Phenomenology · Physics 2007-05-23 D. Indumathi

We present and discuss the theory and phenomenology of the leading twist theory of nuclear shadowing which is based on the combination of the generalization of the Gribov-Glauber theory, QCD factorization theorems, and the HERA QCD analysis…

High Energy Physics - Phenomenology · Physics 2015-05-28 L. Frankfurt , V. Guzey , M. Strikman

We derive relations between spin-dependent nuclear and nucleon g_1 and g_2 structure functions within the nuclear impulse approximation, which are valid at all Q^2, and in both the resonance and deep inelastic regions. We apply the…

Nuclear Theory · Physics 2008-11-26 S. A. Kulagin , W. Melnitchouk
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