中文
相关论文

相关论文: Initial-state energy loss in cold QCD matter and t…

200 篇论文

Various QCD tests using recent results from fixed-target dimuon production experiments at Fermilab are discussed. We emphasize that clear evidence for scaling-violation in the Drell-Yan process remains to be established. Further…

高能物理 - 唯象学 · 物理学 2010-12-13 Jen-Chieh Peng

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…

高能物理 - 唯象学 · 物理学 2011-08-29 Fabian Eichstaedt , Stefan Leupold , Kai Gallmeister , Hendrik van Hees , Ulrich Mosel

Differential cross sections for the Drell-Yan process, including Z boson production, using the dimuon decay channel are measured in proton-lead (pPb) collisions at a nucleon-nucleon centre-of-mass energy of 8.16 TeV. A data sample recorded…

高能物理 - 实验 · 物理学 2021-06-01 CMS Collaboration

We compute cross sections for the Drell-Yan process in N--N collisions at next-to-leading order in $\alpha_s$. The mass, rapidity, transverse momentum, and angular dependence of these cross sections are presented. An estimate of higher…

高能物理 - 唯象学 · 物理学 2014-11-17 S. Gavin , R. Kauffman , S. Gupta , P. V. Ruuskanen , D. K. Srivastava , R. L. Thews

We estimate the energy losses in the cases of J/Psi and l^+l^- pair production on nuclear targets in terms of effective change of the initial beam energy. Our phenomenological results are in reasonable agreement with Theoretical…

高能物理 - 唯象学 · 物理学 2009-11-11 Ya. A. Berdnikov , M. M. Ryzhinskiy , Yu. M. Shabelski

We study the nuclear parton distribution functions on the basis of our recently developed semi-microscopic model, which takes into account a number of nuclear effects including nuclear shadowing, Fermi motion and nuclear binding, nuclear…

高能物理 - 唯象学 · 物理学 2015-06-19 S. A. Kulagin , R. Petti

We review ideas on the structure of the QCD vacuum which had served as motivation for the discussion of various non-standard QCD effects in high-energy reactions in articles from 1984 to 1995. These effects include, in particular,…

高能物理 - 唯象学 · 物理学 2015-06-18 Otto Nachtmann

The forward-backward asymmetry ($A_{FB}$) in the Drell-Yan process $pp/p\bar p \to Z/\gamma^* \to \ell^+\ell^-$ is sensitive to the proton structure information. Such information has been factorized into well-defined proton structure…

高能物理 - 实验 · 物理学 2023-03-15 Mingzhe Xie , Siqi Yang , Yao Fu , Minghui Liu , Liang Han , Tie-Jiun Hou , Sayipjamal Dulat , C. -P. Yuan

We explore the effects of Photon Induced (PI) production of a dilepton final state in the Large Hadron Collider environment. Using QED Parton Distribution Function (PDF) sets we can treat the photons as real partons inside the protons and…

高能物理 - 唯象学 · 物理学 2017-02-22 Elena Accomando , Juri Fiaschi , Francesco Hautmann , Stefano Moretti , Claire H. Shepherd-Themistocleous

The Drell-Yan process for proton incident on nuclei is an excellent place for deeply studying the parton propagation in a nucleus. By means of the nuclear parton distributions determined only with lepton-nuclear deep inelastic scattering…

高能物理 - 唯象学 · 物理学 2021-06-14 Tian-Xing Bai , Chun-Gui Duan

In this work, we investigate production of Drell-Yan (DY) pairs in proton-nucleus collisions in kinematic regions where the corresponding coherence length does not exceed the nuclear radius, $R_A$, and the quantum coherence effects should…

高能物理 - 唯象学 · 物理学 2016-12-21 Victor P. Goncalves , Michal Krelina , Jan Nemchik , Roman Pasechnik

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)…

高能物理 - 唯象学 · 物理学 2023-08-02 Yao Fu , Raymond Brock , Daniel Hayden , Chien-Peng Yuan

Pion-induced Drell-Yan processes are proposed as a potential tool to measure the flavor dependence of the EMC effect, that is, the flavor-dependent modification of quark distributions in the nuclear medium. Existing pionic Drell-Yan data…

核实验 · 物理学 2011-05-05 D. Dutta , J. -C. Peng , I. C. Cloet , D. Gaskell

We discuss the sensitivity of theoretical predictions of observables used in searches for new physics to parton distributions (PDFs) at large momentum fraction $x$. Specifically, we consider the neutral-current Drell-Yan production of gauge…

We show that measurements of the forward-backward charge asymmetry ($A_{FB}(M,y)$) of Drell-Yan dilepton events produced at hadron colliders provide a new powerful tool to constrain Parton Distribution Functions (PDFs). PDF uncertainties…

高能物理 - 实验 · 物理学 2015-07-20 A. Bodek , J. Y. Han , A. Khukhunaishvili , W. Sakumoto

The Drell-Yan massive lepton-pair production in hadronic collisions provides a unique tool complementary to the Deep-Inelastic Scattering for probing the partonic substructures in hadrons. We review key concepts, approximations, and…

高能物理 - 唯象学 · 物理学 2015-06-18 Jen-Chieh Peng , Jian-Wei Qiu

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…

高能物理 - 实验 · 物理学 2016-09-06 ATLAS Collaboration

It is studied the model on J/psi production allowing to extract parton distribution functions (PDFs) from the combined analysis with both data on Drell-Yan and J/psi production processes. It is shown that this, so attractive from…

高能物理 - 唯象学 · 物理学 2008-11-26 A. Sissakian , O. Shevchenko , O. Ivanov

A study of secondary Drell-Yan production in nuclear collisions is presented for SPS energies. In addition to the lepton pairs produced in the initial collisions of the projectile and target nucleons, we consider the potentially high…

高能物理 - 唯象学 · 物理学 2011-09-13 C. Spieles , L. Gerland , N. Hammon , M. Bleicher , S. A. Bass , H. Stoecker , W. Greiner , C. Lourenco , R. Vogt

Within a nuclear model that the deuteron has NN and \pi NN components, we derive convolution formula for investigating the Drell-Yan process in proton-deuteron (pd) reactions. The contribution from the \pi NN component is expressed in terms…

高能物理 - 唯象学 · 物理学 2012-11-28 H. Kamano , T. -S. H. Lee