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We discuss Drell-Yan production of dileptons at high energies in forward rapidity region in a hybrid high-energy approach. This approach uses unintegrated gluon distributions in one proton and collinear quark/antiquark distributions in the…

High Energy Physics - Phenomenology · Physics 2016-07-04 Antoni Szczurek , Wolfgang Schaefer

We investigate Drell-Yan pair production in a QCD inspired model, which takes into account all relevant hard processes up to $O(\alpha_s)$. To address the known shortfalls of such a fixed order calculation we introduce phenomenological…

High Energy Physics - Phenomenology · Physics 2011-08-29 Fabian Eichstaedt , Stefan Leupold , Kai Gallmeister , Hendrik van Hees , Ulrich Mosel

Within the framework of generalized collinear factorization in perturbative QCD (pQCD), we study the effect of initial multiple parton scattering and induced parton energy loss in Drell-Yan (DY) process in proton-nucleus collisions. We…

High Energy Physics - Phenomenology · Physics 2015-05-30 Hongxi Xing , Yun Guo , Enke Wang , Xin-Nian Wang

By means of two typical kinds of quark energy loss parametrization and the nuclear parton distributions determined only with lepton-nuclear deep inelastic scattering experimental data, a leading order analysis are performed on the…

High Energy Physics - Phenomenology · Physics 2015-05-13 Duan Chun-Gui , Liu Na

Forward Drell-Yan process at the LHC probes the proton structure at very small Bjorken-$x$ and moderate hard scales. In this kinematical domain higher twist effects may be significant and introduce sizeable corrections to the standard…

High Energy Physics - Phenomenology · Physics 2015-06-04 Leszek Motyka , Mariusz Sadzikowski , Tomasz Stebel

By globally analyzing nuclear Drell-Yan data including all incident energies, the nuclear effects of nPDFs and initial-state parton energy loss are investigated. Based on Landau-Pomeranchuk-Migdal (LPM) regime, the calculations are carried…

High Energy Physics - Phenomenology · Physics 2021-05-26 Li-Hua Song , Peng-Qi Wang , Yin-Jie Zhang

In the target rest frame and at high energies, Drell-Yan (DY) dilepton production looks like bremsstrahlung of massive photons, rather than parton annihilation. The projectile quark is decomposed into a series of Fock states. Configurations…

High Energy Physics - Phenomenology · Physics 2007-05-23 B. Z. Kopeliovich , J. Raufeisen , A. V. Tarasov

Forward Drell-Yan production at high energy can provide important constraints on gluon densities at small $x$, in the saturation regime. In this work we focus on the nuclear modification of this process, which could be measured at the LHC…

High Energy Physics - Phenomenology · Physics 2017-11-21 B. Ducloué

The Drell-Yan process is an invaluable tool for probing the structure of hadrons, and the pion-induced Drell-Yan process is unique in its sensitivity to several subtleties of the partonic structure. This is a brief review of the pionic…

Nuclear Theory · Physics 2015-06-16 Wen-Chen Chang , Dipangkar Dutta

The production of lepton pairs (Drell-Yan process) at the LHC is being measured to high precision, enabling the extraction of distributions that are triply differential in the di-lepton mass and rapidity as well as in the scattering angle…

High Energy Physics - Phenomenology · Physics 2023-08-09 A. Gehrmann-De Ridder , T. Gehrmann , E. W. N. Glover , A. Huss , C. T. Preuss , D. M. Walker

The forward-backward asymmetry of the Drell-Yan process in dilepton decays at high invariant masses can be used to probe the parton distribution functions at large x. The behavior of three modern PDF sets (CT18NNLO, MSHT20, and NNPDF4.0)…

High Energy Physics - Phenomenology · Physics 2023-08-02 Yao Fu , Raymond Brock , Daniel Hayden , Chien-Peng Yuan

The Drell-Yan massive dilepton production in hadron-hadron collisions provides a unique tool, complementary to Deep Inelastic Scattering, for improving our understanding of hadronic substructure and in particular for testing parton…

High Energy Physics - Phenomenology · Physics 2016-03-15 Eduardo Basso , Claude Bourrely , Roman Pasechnik , Jacques Soffer

We present the full next-to-next-to-leading order (NNLO) corrections to the coefficient function for the polarized cross section $d \Delta\sigma/d Q$ of the Drell-Yan process. We study the effect of these corrections on the process $p+p\to…

High Energy Physics - Phenomenology · Physics 2009-11-10 V. Ravindran , J. Smith , W. L. van Neerven

We study power corrections in the Drell-Yan (DY) process using state-of-the-art predictions for both neutral and charged current production. For both types of DY processes, we account for power corrections arising from bottom and charm…

High Energy Physics - Phenomenology · Physics 2026-02-05 Ekta Chaubey , Pooja Mukherjee

In the framework of the kt-factorization approach, the production of unpolarized Drell-Yan lepton pair at high energies is studied. The consideration is based on the O(alpha) and $O(alpha alpha_s) off-shell partonic matrix elements with…

High Energy Physics - Phenomenology · Physics 2015-06-03 A. V. Lipatov , M. A. Malyshev , N. P. Zotov

This paper presents a measurement of the double-differential cross section for the Drell-Yan $Z/\gamma^{*} \rightarrow \ell^{+} \ell^{-}$ and photon-induced $\gamma\gamma \rightarrow \ell^{+} \ell^{-}$ processes where $\ell$ is an electron…

High Energy Physics - Experiment · Physics 2016-09-06 ATLAS Collaboration

We discuss production of Drell-Yan lepton pairs at hadron colliders in the framework of the parton Reggeization approach, which includes off-shell initial state effects in a gauge-invariant way. Other possible prescriptions to restore…

High Energy Physics - Phenomenology · Physics 2019-02-13 Maxim Nefedov , Vladimir Saleev

We pursue a phenomenological study of higher twist effects in high energy processes by taking into account the off-shellness (virtuality) of partons bound in the nucleon. The effect of parton off-shellness in deep inelastic ep->eX…

High Energy Physics - Phenomenology · Physics 2014-11-18 O. Linnyk , S. Leupold , U. Mosel

Dilepton and photon production in heavy-ion collisions at SPS energies is studied in the relativistic transport model that incorporates self-consistently the change of hadron masses in dense matter. It is found that the dilepton spectra in…

Nuclear Theory · Physics 2007-05-23 G. Q. Li , G. E. Brown , C. Gale , C. M. Ko

We discuss the Drell-Yan production of dileptons at high energies in the forward rapidity region of proton-proton collisions in a hybrid high-energy approach. This approach uses unintegrated gluon distributions in one proton and collinear…

High Energy Physics - Phenomenology · Physics 2016-10-18 Wolfgang Schäfer , Antoni Szczurek