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In collisions between heavy nuclei, such as those at the Large Hadron Collider (LHC) at CERN, hydrodynamic models have successfully related measured azimuthal momentum anisotropies to the transverse shape of the collision region. For an…

高能物理 - 唯象学 · 物理学 2024-09-25 Christian Bierlich , Peter Christiansen , Gösta Gustafson , Leif Lönnblad , Robin Törnkvist , Korinna Zapp

A consistent picture of the Au+Au and D+Au, s^1/2 = 200 A GeV measurements at RHIC obtained with the PHENIX, STAR, PHOBOS and BRAHMS detectors including both the rapidity and transverse momentum spectra was previously developed with the…

核理论 · 物理学 2008-11-26 D. E. Kahana , S. H. Kahana

We calculate $p_T$ spectra and elliptic flow for tip-tip and body-body configurations of full overlap uranium-uranium (U+U) collisions using a hydrodynamic model with smooth initial density distribution and compare the results with those…

核理论 · 物理学 2017-06-21 Pingal Dasgupta , Rupa Chatterjee , Dinesh K. Srivastava

Elliptic flow in heavy-ion collisions is an important signature of a possible de-confinement transition from hadronic phase to partonic phase. In the present work, we use non-extensive statistics, which has been used for transverse momentum…

高能物理 - 唯象学 · 物理学 2018-03-06 Sushanta Tripathy , Swatantra Kumar Tiwari , Mohammed Younus , Raghunath Sahoo

Light nuclei might be formed in heavy-ion collisions by the coalescence of produced (anti-)nucleons or transported nucleons. Due to their low binding energies, they are more likely to form at later stages of the hadronic fireball. In this…

核实验 · 物理学 2023-12-14 Rishabh Sharma

Elliptic flow has been one of the key observables for establishing the finding of the quark-gluon plasma (QGP) at the highest energies of Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC). As a sign of collectively…

核理论 · 物理学 2015-06-17 Jussi Auvinen , Hannah Petersen

One of the fundamental questions in the field of subatomic physics is what happens to matter at extreme densities and temperatures as may have existed in the first microseconds after the Big Bang and exists, perhaps, in the core of dense…

核实验 · 物理学 2011-06-16 Raimond Snellings

We use an event-by-event hydrodynamical description of the heavy-ion collision process with Glauber initial conditions to calculate the thermal emission of photons. The photon rates in the hadronic phase follow from a spectral function…

核理论 · 物理学 2017-07-26 Young-Min Kim , Chang-Hwan Lee , Derek Teaney , Ismail Zahed

We present measurements of elliptic flow and event-by-event fluctuations established by the PHOBOS experiment. Elliptic flow scaled by participant eccentricity is found to be similar for both systems when collisions with the same number of…

核实验 · 物理学 2019-08-13 Rachid Nouicer

Elliptic flow ($v_2$) fluctuations in central heavy-ion collisions are direct probes of the fluctuating geometry of the quark-gluon plasma, and, as such, are strongly sensitive to any deviation from spherical symmetry in the shape of the…

核理论 · 物理学 2019-03-05 Giuliano Giacalone

In this contribution we present an alternative scenario for the large elliptic flow observed in relativistic heavy ion collisions. Motivated by recent results from Lattice QCD on flavor off-diagonal susceptibilities we argue that the matter…

核理论 · 物理学 2009-11-18 Volker Koch

Measurements of anisotropic flow in heavy-ion collisions provide evidence for the creation of strongly interacting matter which appears to behave as an almost ideal fluid. Anisotropic flow signals the presence of multiple interactions and…

核实验 · 物理学 2015-05-28 Ante Bilandzic

Elliptic flow and two-particle azimuthal correlations of charged hadrons and high-$p_T$ pions ($p_T>$ 1 GeV/$c$) have been measured close to mid-rapidity in 158A GeV/$c$ Pb+Au collisions by the CERES experiment. Elliptic flow ($v_2$) rises…

核实验 · 物理学 2011-08-17 G. Agakichiev

This paper presents measurements of the elliptic flow of charged particles as a function of pseudorapidity and centrality from Cu-Cu collisions at 62.4 and 200 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider (RHIC). The…

核实验 · 物理学 2019-08-14 B. Alver

We study effects of eccentricity fluctuations on the elliptic flow coefficient v_2 at mid-rapidity in both Au+Au and Cu+Cu collisions at sqrt{s_NN}=200 GeV by using a hybrid model that combines ideal hydrodynamics for space-time evolution…

核理论 · 物理学 2009-08-03 Tetsufumi Hirano , Yasushi Nara

The elliptic flow for $Z\le2$ particles in heavy ion collisions at energies from several tens to several hundreds MeV per nucleon is investigated by means of transport model,i.e. a new version of the Improved Quantum Molecular Dynamics…

核理论 · 物理学 2009-11-11 Yingxun Zhang , Zhuxia Li

We present the elliptic flow $v_{2}$ of electrons from the semi-leptonic decays of heavy-flavour hadrons at mid-rapidity for semi-central ($20-40%$ centrality) Pb-Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 2.76 TeV measured with the ALICE…

高能物理 - 实验 · 物理学 2019-08-13 Andrea Dubla

Recent results of the anisotropic flow measurements by the ALICE Collaboration at the LHC are reviewed. Directed, elliptic, triangular, and quadrangular flow are presented differentially vs. transverse momentum, pseudo-rapidity, and the…

核实验 · 物理学 2019-08-13 Ilya Selyuzhenkov

We investigate the elliptic and the triangular flow of heavy mesons in ultrarelativistic heavy-ion collisions at RHIC and the LHC. The dynamics of heavy quarks is coupled to the locally thermalized and fluid dynamically evolving quark-gluon…

高能物理 - 唯象学 · 物理学 2015-06-23 Marlene Nahrgang , Jörg Aichelin , Steffen Bass , Pol Bernard Gossiaux , Klaus Werner

The centrality dependence of elliptic flow and how it is related to the physics of expansion of the system created in high energy nuclear collisions is discussed. Since in the hydro limit the centrality dependence of elliptic flow is mostly…

核理论 · 物理学 2009-10-31 S. A. Voloshin , A. M. Poskanzer