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We propose new Transverse Momentum Dependent (TMD) gluon densities in nuclei. Our method is based on a combination of the color dipole scattering formalism, within which we interpret the nuclear deep inelastic structure functions…

High Energy Physics - Phenomenology · Physics 2025-05-06 A. V. Lipatov , G. I. Lykasov , M. A. Malyshev

We study the nuclear structure function $F_2^A$ and its logarithmic derivative in the high energy limit (small $x$ region) using the Color Glass Condensate formalism. In this limit the structure function $F_2$ depends on the quark…

High Energy Physics - Phenomenology · Physics 2009-11-10 Jamal Jalilian-Marian

The $n$-th moments of the nuclear structure function $F_2^A(x,Q^2)$ are analyzed using the off-shell kinematics appropriate to describe deep inelastic electron-nucleus scattering within the impulse approximation. It is shown that off-shell…

High Energy Physics - Phenomenology · Physics 2009-10-31 O. Benhar , S. Fantoni , G. I. Lykasov

Nuclear effects in light nuclei due to the presence of spin-one isosinglet 6-quark clusters are investigated. The quark distributions of 6-quark clusters are obtained by using a perturbative QCD (pQCD) based framework, which allows us to…

High Energy Physics - Phenomenology · Physics 2008-11-26 Ivan Schmidt , Jian-Jun Yang

Nuclear medium effects in the weak structure functions $F_2(x,Q^2)$ and $F_3(x,Q^2)$ have been studied for deep inelastic neutrino/antineutrino reactions in iron nucleus by taking into account Fermi motion, binding, pion and rho meson cloud…

Nuclear Theory · Physics 2015-05-30 H. Haider , I. Ruiz Simo , M. Sajjad Athar , M. J. Vicente Vacas

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

We explore the theoretical observation that within the leading twist approximation, the nuclear effects of shadowing and antishadowing in non-perturbative nuclear parton distribution functions (nPDFs) at the input QCD evolution scale…

High Energy Physics - Phenomenology · Physics 2017-06-07 L. Frankfurt , V. Guzey , M. Strikman

We estimate the perturbative nuclear shadowing in the nuclear structure function $F_2^A(x,Q^2)$, mainly at the kinematic region of HERA using the Glauber-Mueller approach. The contributions of the quark and gluon sectors to the nuclear…

High Energy Physics - Phenomenology · Physics 2016-08-15 M. B. Gay Ducati , Victor P. Gonçalves

We study the nuclear effects in the electromagnetic structure function F2(x,Q^2) in nuclei in the deep inelastic lepton nucleus scattering process by taking into account Fermi motion, binding, pion and rho meson cloud contributions.…

Nuclear Theory · Physics 2011-04-28 M. Sajjad Athar , I. Ruiz Simo , M. J. Vicente Vacas

We demonstrate that leading twist nuclear shadowing leads to large corrections for the extraction of the neutron structure function F_2n from the future deuteron collider data both in the inclusive and in the tagged structure function…

High Energy Physics - Phenomenology · Physics 2009-11-10 L. Frankfurt , V. Guzey , M. Strikman

Nuclear shadowing in the structure function $F_3$ is investigated as a possible test of shadowing models. The $F_3$ shadowing is studied in two different theoretical models: a parton-recombination model with $Q^2$ rescaling and an…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Kumano , M. Miyama

Various shadowing aspects of nuclear parton distributions are discussed in a parton-model framework. We explain existing $x$ dependent data of $F_2^A/F_2^D$, then the model is applied to a flavor asymmetry $\bar u-\bar d$ in a nucleus, to…

High Energy Physics - Phenomenology · Physics 2015-06-25 S. Kumano

The nuclear reduced cross section $\sigma^{A}_{r}$, in the kinematic range of the electron-Ion collider with center-of-mass energy $\sqrt{s}=140~\mathrm{GeV}$ and $y{\leq}1$, is discussed. The importance of the nuclear longitudinal…

High Energy Physics - Phenomenology · Physics 2024-10-30 G. R. Boroun , B. Rezaei

We have studied the nucleon structure functions $F_{iN}^{EM} (x,Q^2);~i=1,2$, by including contributions due to the higher order perturbative QCD effect up to NNLO and the non-perturbative effects due to the kinematical and dynamical higher…

High Energy Physics - Phenomenology · Physics 2019-06-05 F. Zaidi , H. Haider , M. Sajjad Athar , S. K. Singh , I. Ruiz Simo

We consider deep inelastic scattering off nuclei in the Regge limit within the Glauber-Gribov model. Using unitarized parton distribution functions for the proton, we find sizeable shadowing effects on the nuclear total and longitudinal…

High Energy Physics - Phenomenology · Physics 2014-11-20 Nestor Armesto , Alexei B. Kaidalov , Carlos A. Salgado , Konrad Tywoniuk

$Q^2$ evolution of the structure functions $F_2$ in tin and carbon nuclei is investigated in order to understand recent NMC measurements. $F_2$ is evolved by using leading-order DGLAP, next-to-leading-order DGLAP, and parton-recombination…

High Energy Physics - Phenomenology · Physics 2014-11-17 S. Kumano , M. Miyama

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

We have studied nuclear medium effects in the weak structure functions $F^A_2(x)$ and $F^A_3(x)$ and in the extraction of weak mixing angle using Paschos Wolfenstein(PW) relation. We have modified the PW relation for nonisoscalar nuclear…

Nuclear Theory · Physics 2013-11-12 M. Sajjad Athar , H. Haider , I Ruiz Simo , M. J. Vicente Vacas

We analyze the CCFR collaboration iron target data on the xF3 structure function making particular emphasis on the extraction of the higher twist contributions from data. Corrections for nuclear effects are applied in order to extract data…

High Energy Physics - Phenomenology · Physics 2014-11-17 S. A. Kulagin , A. V. Sidorov

Q**2 dependence of nuclear structure functions is important for understanding perturbative QCD in nuclear environment. However, current experimental data are not sufficient for studying nuclear dependence in the Q**2 evolution because the…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Kumano , M. Miyama