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相关论文: Intermediate mass dileptons as pre-equilibrium pro…

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A systematic study of intermediate invariant mass dilepton production in Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02$ TeV is performed, using next-to-leading-order (NLO) thermal QCD dilepton emission rates with a multistage dynamical approach…

核理论 · 物理学 2025-03-14 Xiang-Yu Wu , Lipei Du , Charles Gale , Sangyong Jeon

The dilepton invariant mass spectrum measured in heavy-ion collisions includes contributions from important QGP probes such as thermal radiation and the quarkonium ($J/\psi$, $\psi'$ and $\Upsilon$) states. Dileptons coming from hard $q…

高能物理 - 唯象学 · 物理学 2015-06-05 V. Kumar , P. Shukla , R. Vogt

The production of the intermediate mass dileptons originating from the annihilation and Compton scattering of the jets and high energy photons (resolved photons) passing through the quark-gluon plasma is calculated. The contribution of the…

高能物理 - 唯象学 · 物理学 2011-11-29 Fu Yong-Ping , Li Yun-De

Through the analysis of HELIOS-3 data obtained at the CERN SPS, we demonstrate the importance of secondary processes for dilepton production in heavy-ion collisions in the intermediate invariant mass region. We find that while the dilepton…

核理论 · 物理学 2010-01-15 G. Q. Li , C. Gale

We propose the angular distribution of lepton pairs produced in ultrarelativistic heavy-ion collisions as a probe of thermalization of the quark-gluon plasma. We focus on dileptons with invariant masses large enough that they are produced…

The significance of thermal dilepton radiation at intermediate invariant masses (1GeV<M<3GeV) in ultrarelativistic heavy-ion collisions is investigated. At CERN-SpS energies, a consistent explanation of the excess observed by NA50 can be…

高能物理 - 唯象学 · 物理学 2007-05-23 Ralf Rapp

We study dilepton production from a thermally equilibrating quark-gluon plasma expected to be formed in ultra relativistic heavy-ion collisions. The pre-equilibrium dynamics of quark-gluon plasma is studied within the color flux-tube model…

高能物理 - 唯象学 · 物理学 2009-10-31 Gouranga C Nayak

Dilepton production associated with minijets is calculated in ultrarelativistic heavy ion collisions using the first order approximation of the dilepton fragmentation functions of quarks and gluons. The full QCD evolution of the…

核理论 · 物理学 2009-10-22 K. J. Eskola , Xin-Nian Wang

The production of high invariant mass opposite sign lepton pairs in proton-proton collisions at the LHC is dominated by the Drell-Yan process. In addition to this photon or Z exchange mediated mechanism, gamma-gamma collisions, where…

高能物理 - 唯象学 · 物理学 2016-06-03 Dimitri Bourilkov

We use QCD kinetic theory to compute dilepton production coming from the pre-equilibrium phase of the Quark-Gluon Plasma created in high-energy heavy-ion collisions. We demonstrate that the dilepton spectrum exhibits a simple scaling in…

高能物理 - 唯象学 · 物理学 2025-02-19 Oscar Garcia-Montero , Philip Plaschke , Sören Schlichting

In ultrarelativistic heavy-ion collisions at $\sqrt{s} >$ 20 (120) A$\cdot$GeV a copious production of charm (bottom) production sets in which, via correlated semileptonic $D \bar D$ ($B \bar B$) decays, gives rise to a dilepton yield at…

高能物理 - 唯象学 · 物理学 2008-11-26 K. Gallmeister , B. Kaempfer , O. P. Pavlenko

The spectrum of dileptons produced by the quark-gluon plasma in an ultrarelativistic nucleus-nucleus collision depends only, to a good approximation, on the transverse mass M_t of the dilepton. This scaling is exact as long as transverse…

We discuss the emission of high momentum lepton pairs in central Au+Au collisions at RHIC ($\sqrt{s_{NN}}=$200 GeV) and Pb+Pb collisions at the LHC ($\sqrt{s_{NN}}=$5500 GeV). Yields of dileptons produced through interactions of jets with…

高能物理 - 唯象学 · 物理学 2008-11-26 Simon Turbide , Charles Gale , Dinesh K. Srivastava , Rainer J. Fries

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

The yield of muon pairs in the invariant mass region 1<M<2.5 GeV/c^2 produced in heavy-ion collisions significantly exceeds the sum of the two expected contributions, Drell-Yan dimuons and muon pairs from the decays of D meson pairs. These…

We study thermal dilepton production and anisotropic flow in Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02 \, \mathrm{TeV}$ using next-to-leading-order (NLO) thermal QCD dilepton emission rates. A hybrid model (IP-Glasma+\kompost+MUSIC+UrQMD)…

核理论 · 物理学 2025-05-01 Xiang-Yu Wu , Lipei Du , Charles Gale , Sangyong Jeon

We study the invariant-mass distributions of dileptons produced in ultrarelativistic heavy-ion collisions at very low pair transverse momenta, $P_T\leq 0.15$ GeV. Specifically, we investigate the interplay of thermal radiation with initial…

核理论 · 物理学 2019-01-30 Mariola Klusek-Gawenda , Ralf Rapp , Wolfgang Schäfer , Antoni Szczurek

We present a fully relativistic and gauge invariant framework for calculating the cross sections of dilepton production in nucleon-nucleon (NN) collisions which is based on the meson-exchange approximation for the NN scattering amplitudes.…

核理论 · 物理学 2015-05-18 R. Shyam , 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…

核理论 · 物理学 2007-05-23 G. Q. Li , G. E. Brown , C. Gale , C. M. Ko

Ultra-relativistic heavy-ion collisions are used to create a deconfined state of quarks and gluons, the quark-gluon plasma (QGP), similar to the matter in the early universe. Dileptons are a unique probe of the QGP. Being emitted during all…

核实验 · 物理学 2025-12-12 R. Bailhache , H. Appelshäuser
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