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Chung, P.; Ajitanand, N. N.; Jm, Alexander; Anderson, M.; Best, D.; Fp, Brady; Case, T.; Caskey, W.; Cebra, D.; Jl, Chance; Cole, B.; Crowe, K.; Das, A.; Draper, J. E.; Ml, Gilkes; Gushue, S.; Heffner, M.; As, Hirsch; El, Hjort; Huo, L.; Justice, M.; Kaplan, M.; Keane, D.; Jc, Kintner; Klay, J. L.; Krofcheck, D.; Ra, Lacey; Ma, L.; H, Liu; Ym, Liu; McGrath, Robert; Milosevich, Z.; Odyniec, G.; Dl, Olson; Sy, Panitkin; Pinkenburg, C.; Porile, N.T.; Rai, G.; Ritter, H. G.; Romero, J. L.; Scharenberg, R. P.; Schroeder, L. S.; Srivastava, B.; Nt, Stone; Tj, Symons; Wienold, T.; Witt, R.; Whitfield, J.; Wood, L.; Wn, Zhang

doi:10.1103/physrevlett.86.2533

Cited by 43 publications

(15 citation statements)

References 26 publications

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“…The Λ are located at mid-rapidity whereas the protons show a rather flat distribution. If one weights the in-plain flow by the distribution of the particles it is evident that the rapidity integrated in-plain flow of protons (p dir x = ( all particles sign(y i )p x (y i ))/N all particles ) is rather large as compared to that of the Λ. energies [126].…”

Section: In-plane and Azimuthal Distribution Of The λmentioning

confidence: 99%

Strangeness production close to the threshold in proton–nucleus and heavy-ion collisions

et al. 2012

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We discuss strangeness production close to threshold in p+A and A+A collision. Comparing the body of available K + , K 0 , K − , and Λ data with the IQMD transport code and for some key observables as well with the HSD transport code, we find good agreement for the large majority of the observables. The investigation of the reaction with help of these codes reveals the complicated interaction of the strange particles with hadronic matter which makes strangeness production in heavy-ion collisions very different from that in elementary interactions. We show how different strange particle observables can be used to study the different facets of this interaction (production, rescattering and potential interaction) which finally merge into a comprehensive understanding of these interactions. We identify those observables which allow for studying (almost) exclusively one of these processes to show how future high precision experiments can improve our quantitative understanding. Finally, we discuss how the K + multiplicity can be used to study the hadronic equation of state.

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Section: In-plane and Azimuthal Distribution Of The λmentioning

confidence: 99%

Strangeness production close to the threshold in proton–nucleus and heavy-ion collisions

et al. 2012

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“…The shape and magnitude of directed flow in the vicinity of mid-rapidity are of special interest, * fliu@iopp.ccnu.edu.cn especially for protons, because they are sensitive to the equation of state (EOS) and may carry a phase transition signal [7][8][9]. Directed flow has been measured at the Alternating Gradient Synchrotron (AGS) [10,11], at the CERN Super Proton Synchrotron (SPS) [12], and at the Relativistic Heavy Ion Collider (RHIC) [13][14][15][16][17][18]. In particular, the directed flow of protons at RHIC has been studied in detail by the STAR Collaboration, for Au + Au collisions at √ s NN = 200 GeV [17] and at lower energies [18].…”

Section: Introductionmentioning

confidence: 99%

Directed flow of transported and nontransported protons in Au+Au collisions from an ultrarelativistic quantum molecular dynamics model

2012

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The directed flow of inclusive, transported and nontransported (including produced) protons, as well as antiprotons, has been studied in the framework of an ultrarelativistic quantum molecular dynamics approach for Au + Au collisions at √ s NN = 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV. The rapidity, centrality, and energy dependence of directed flow for various proton groups are presented. It is found that the integrated directed flow decreases monotonically as a function of collision energy for √ s NN = 11.5 GeV and beyond. However, the sign change of directed flow of inclusive protons, seen in experimental data as a function of centrality and collision energy, can be explained by the competing effect of directed flow between transported and nontransported protons. Similarly, the difference in directed flow between protons and antiprotons can be explained. Our study offers a conventional explanation on the cause of the v 1 sign change other than the antiflow component of protons alone, which is argued to be linked to a phase transition.

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“…In the vicinity of a first order phase transition directed flow of hadrons is believed to drop and even vanish due to softening of the underlying EoS, making v 1 an interesting observable to be studied at RHIC-BES, NICA and FAIR. The directed flow which is observed at AGS energies [19][20][21] and below show linearity as a function of the rapidity with the slope quantifying the strength of the signal. Above SPS energies [22][23][24], the slope of directed flow in the mid-rapidity region is different compared to the slope in the beam rapidity region which makes the structure of v 1 (y) more complex.…”

Section: Introductionmentioning

confidence: 90%

Anisotropic flow of charged and identified hadrons at FAIR energies and its dependence on the nuclear equation of state

2019

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In this article, we examine the equation of state (EoS) dependence of the anisotropic flow parameters (v1, v2 and v4) of charged and identified hadrons, as a function of transverse momentum (pT), rapidity (yc.m.) and the incident beam energy (E Lab ) in mid-central Au + Au collisions in the energy range E Lab = 6 − 25 A GeV. Simulations are carried out by employing different variants of the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model, namely the pure transport (cascade) mode and the hybrid mode. In the hybrid mode, transport calculations are coupled with the ideal hydrodynamical evolution. Within the hydrodynamic scenario, two different equations of state (EoS) viz. Hadron gas and Chiral + deconfinement EoS have been employed separately to possibly mimic the hadronic and partonic scenarios, respectively. It is observed that the flow parameters are sensitive to the onset of hydrodynamic expansion of the fireball in comparison to the pure transport approach. The results would be useful as predictions for the upcoming low energy experiments at Facility for Antiproton and Ion Research (FAIR) and Nuclotron-based Ion Collider fAcility (NICA).

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Directed Flow ofΛHyperons in(2–6)AGeVAu

Cited by 43 publications

References 26 publications

Strangeness production close to the threshold in proton–nucleus and heavy-ion collisions

Strangeness production close to the threshold in proton–nucleus and heavy-ion collisions

Directed flow of transported and nontransported protons in Au+Au collisions from an ultrarelativistic quantum molecular dynamics model

Anisotropic flow of charged and identified hadrons at FAIR energies and its dependence on the nuclear equation of state

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