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Measurements of mass-dependent azimuthal anisotropy in central p+Au, d+Au, and 3He+Au collisions at root(s)NN=200 GeV (CROSBI ID 252989)

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(PHENIX Collaboration) Adare, A. ; ... ; Makek, Mihael ; ... ; Vukman, Nikola ; ... ; Zou, L. Measurements of mass-dependent azimuthal anisotropy in central p+Au, d+Au, and 3He+Au collisions at root(s)NN=200 GeV // Physical review. C, 97 (2018), 6; 064904, 11. doi: 10.1103/PhysRevC.97.064904

Podaci o odgovornosti

Adare, A. ; ... ; Makek, Mihael ; ... ; Vukman, Nikola ; ... ; Zou, L.

PHENIX Collaboration

engleski

Measurements of mass-dependent azimuthal anisotropy in central p+Au, d+Au, and 3He+Au collisions at root(s)NN=200 GeV

We present measurements of the transverse- momentum dependence of elliptic flow v2 for identified pions and (anti)protons at midrapidity (|η|<0.35), in 0%–5% central p+Au and He3+Au collisions at sNN=200 GeV. When taken together with previously published measurements in d+Au collisions at sNN=200 GeV, the results cover a broad range of small-collision-system multiplicities and intrinsic initial geometries. We observe a clear mass-dependent splitting of v2(pT) in d+Au and He3+Au collisions, just as in large nucleus-nucleus (A+A) collisions, and a smaller splitting in p+Au collisions. Both hydrodynamic and transport model calculations successfully describe the data at low pT (<1.5GeV/c), but fail to describe various features at higher pT. In all systems, the v2 values follow an approximate quark-number scaling as a function of the hadron transverse kinetic energy per constituent quark (KET/nq), which was also seen previously in A+A collisions.

azimuthal anisotropy ; small systems ; 200 GeV ; PHENIX ; RHIC

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Podaci o izdanju

97 (6)

2018.

064904

11

objavljeno

2469-9985

2469-9993

10.1103/PhysRevC.97.064904

Povezanost rada

Fizika

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