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A phenomenological study of quark--hadron duality in electron and neutrino scattering on nuclei is performed. We compute the structure functions $F_2$ and $xF_3$ in the resonance region within a framework that includes the Dortmund-group…

Nuclear Theory · Physics 2009-02-18 Olga Lalakulich , Natalie Jachowicz , Christophe Praet , Jan Ryckebusch

We study the gluon radiation spectrum off a hard in-medium produced quark in the multiple soft rescattering formalism of Baier-Dokshitzer-Mueller-Peigne-Schiff, and of Zakharov (BDMPS-Z). Its dependence on the quark and gluon energy, on the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Urs Achim Wiedemann

We address novel features of deep inelastic lepton scattering on nuclei at small Bjorken variable $x_{Bj}$. In this regime the lepton-nuclear cross section involves the interference between the standard lepton-quark scattering amplitude for…

High Energy Physics - Phenomenology · Physics 2021-12-07 Stanley J. Brodsky , Valery E. Lyubovitskij , Ivan Schmidt

We review the recent finding of the two-plateau momentum distribution of sea quarks in deep inelastic scattering off nuclei in the saturation regime. The diffractive plateau which dominates for small $\bp$ measures precisely the momentum…

High Energy Physics - Phenomenology · Physics 2009-11-07 I. P. Ivanov , N. N. Nikolaev , W. Schäfer , B. G. Zakharov , V. R. Zoller

We present a general analysis of the spin transfer for $\Lambda$ and $\bar{\Lambda}$ production in deep-inelastic scattering of polarized charged leptons on the nucleon, and find that the pattern of different behaviors of $\Lambda$ and…

High Energy Physics - Phenomenology · Physics 2009-10-31 Bo-Qiang Ma , Ivan Schmidt , Jacques Soffer , Jian-Jun Yang

We present a unified description of nuclear deep inelastic scattering (DIS) over the whole region $0<x<1$ of the Bjorken variable. Our approach is based on a relativistically covariant formalism which uses analytical properties of quark…

Nuclear Theory · Physics 2009-09-25 S. A. Kulagin , G. Piller , W. Weise

Multiple scattering and induced parton splitting lead to a medium modification of the QCD evolution for jet fragmentation functions and the final hadron spectra. Medium-induced parton splittings not only lead to energy loss of leading…

High Energy Physics - Phenomenology · Physics 2021-02-12 Ning-bo Chang , Wei-tian Deng , Xin-Nian Wang

Multiple scattering, modified fragmentation functions and radiative energy loss of a heavy quark propagating in a nuclear medium are investigated in perturbative QCD. Because of the quark mass dependence of the gluon formation time, the…

Nuclear Theory · Physics 2008-11-26 Ben-Wei Zhang , Enke Wang , Xin-Nian Wang

Within the generalized high-twist factorization formalism, we express the contribution from multiple parton scattering and induced gluon radiation to the DY dilepton spectra in terms of nuclear modified effective beam quark distribution…

High Energy Physics - Phenomenology · Physics 2012-10-16 Hongxi Xing , Yun Guo , Enke Wang , Xin-Nian Wang

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

Viscous modifications to the thermal distributions of quark-antiquarks and gluons have been studied in a quasi-particle description of the quark-gluon-plasma medium created in relativistic heavy-ion collision experiments. The model is…

Nuclear Theory · Physics 2015-11-05 Vinod Chandra , V. Sreekanth

The case of heavy quark propagation in dense extended matter is studied in the multiple scattering formalism of the higher twist energy loss scheme. We consider the case of deep inelastic scattering off a large nucleus. The hard lepton…

Nuclear Theory · Physics 2014-12-31 Raktim Abir , Gagan Deep Kaur , Abhijit Majumder

Two widely proposed kt-dependent gluon distributions in the small-x saturation regime are investigated using two particle back-to-back correlations in high energy scattering processes. The Weizsacker-Williams gluon distribution, interpreted…

High Energy Physics - Phenomenology · Physics 2011-02-01 Fabio Dominguez , Bo-Wen Xiao , Feng Yuan

We analyze the azimuthal dependence of the heavy-quark-initiated contributions to the lepton-nucleon deep inelastic scattering (DIS). First we derive the relations between the parton level semi-inclusive structure functions and the helicity…

High Energy Physics - Phenomenology · Physics 2008-11-26 L. N. Ananikyan , N. Ya. Ivanov

We calculate the azimuthal dependence of the heavy-quark-initiated ${\cal O}(\alpha_{s})$ contributions to the lepton-nucleon deep inelastic scattering (DIS). It is shown that, contrary to the photon-gluon fusion (GF) component, the…

High Energy Physics - Phenomenology · Physics 2008-11-26 L. N. Ananikyan , N. Ya. Ivanov

The behavior of the nucleon structure functions in lepton nuclei deep inelastic scattering, both polarized and unpolarized, due to nuclear structure effects is reanalyzed. The study is performed in two schemes: an x-rescaling approach, and…

High Energy Physics - Phenomenology · Physics 2015-06-19 H. Fanchiotti , C. A. García-Canal , T. Tarutina , V. Vento

The duality between partonic and hadronic descriptions of physical phenomena is one of the most remarkable features of strong interaction physics. A classic example of this is in electron-nucleon scattering, in which low-energy cross…

High Energy Physics - Phenomenology · Physics 2014-11-18 W. Melnitchouk , R. Ent , C. Keppel

It is shown that neutrino and antineutrino deep inelastic scattering of unpolarized and polarized $\Lambda$ and $\bar{\Lambda}$ productions, can provide a clean separation of unpolarized and polarized fragmentation functions of a quark into…

High Energy Physics - Phenomenology · Physics 2009-10-31 Bo-Qiang Ma , Jacques Soffer

We compute the color coherence effects for soft gluon radiation off antennas containing heavy quarks in the presence of a QCD medium - in color singlet, triplet or octet global states. This work completes the studies of antenna radiation…

High Energy Physics - Phenomenology · Physics 2014-10-15 Manoel R. Calvo , Manoel R. Moldes , Carlos A. Salgado

The effect of multiple scatterings on the propagation of hard partonic jets in a dense nuclear medium is studied in the framework of deep-inelastic scattering (DIS) off a large nucleus. Power counting arguments based on the Glauber improved…

High Energy Physics - Phenomenology · Physics 2015-06-05 Guang-You Qin , Abhijit Majumder