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Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions at $\sqrt{s_{_{NN}}} = 200$ GeV

The STAR collaboration
Phys.Rev.C 90 (2014) 064904, 2014.

Abstract
We report on the first measurement of the azimuthal anisotropy ($v_2$) of dielectrons ($e^{+}e^{-}$ pairs) at mid-rapidity from $\sqrt{s_{_{NN}}} = 200$ GeV Au+Au collisions with the STAR detector at RHIC, presented as a function of transverse momentum ($p_T$) for different invariant-mass regions. In the mass region $M_{ee}\!<1.1$ GeV/$c^2$ the dielectron $v_2$ measurements are found to be consistent with expectations from $\pi^{0}$, $\eta$, $\omega$ and $\phi$ decay contributions. In the mass region $1.1\!<M_{ee}\!<2.9$ GeV/$c^2$, the measured dielectron $v_2$ is consistent, within experimental uncertainties, with that from the $c\bar{c}$ contributions.

  • Figure 19 (exp. data)

    Experimental data from Figure 19

    10.17182/hepdata.96269.v1/t1

    The dielectron $v_2$ in the $\pi^0$ Dalitz decay region as a function of $p_T$ in different centralities from Au +...

  • Figure 19 (sim. data)

    Simulated data from Figure 19

    10.17182/hepdata.96269.v1/t2

    Expected dielectron $v_2$ from $\pi^0$ Dalitz decay as a function of $p_T$ in different centralities from Au + Au collisions...

  • Figure 21 a (exp. data)

    Experimental data from Figure 21 a

    10.17182/hepdata.96269.v1/t3

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for...

  • Figure 21 b (exp. data)

    Experimental data from Figure 21 b

    10.17182/hepdata.96269.v1/t4

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for...

  • Figure 21 c (exp. data)

    Experimental data from Figure 21 c

    10.17182/hepdata.96269.v1/t5

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for...

  • Figure 21 d (exp. data)

    Experimental data from Figure 21 d

    10.17182/hepdata.96269.v1/t6

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for...

  • Figure 21 e (exp. data)

    Experimental data from Figure 21 e

    10.17182/hepdata.96269.v1/t7

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for...

  • Figure 21 f (exp. data)

    Experimental data from Figure 21 f

    10.17182/hepdata.96269.v1/t8

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV for...

  • Figure 21 a (sim. data)

    Simulated data from Figure 21 a

    10.17182/hepdata.96269.v1/t9

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV expected...

  • Figure 21 b (sim. data)

    Simulated data from Figure 21 b

    10.17182/hepdata.96269.v1/t10

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV expected...

  • Figure 21 c (sim. data)

    Simulated data from Figure 21 c

    10.17182/hepdata.96269.v1/t11

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV expected...

  • Figure 21 d (sim. data)

    Simulated data from Figure 21 d

    10.17182/hepdata.96269.v1/t12

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV expected...

  • Figure 21 e (sim. data)

    Simulated data from Figure 21 e

    10.17182/hepdata.96269.v1/t13

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV expected...

  • Figure 21 f (sim. data)

    Simulated data from Figure 21 f

    10.17182/hepdata.96269.v1/t14

    The dielectron $v_2$ as a function of $p_T$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV expected...

  • Figure 22 (exp. data)

    Experimental data from Figure 22

    10.17182/hepdata.96269.v1/t15

    The $p_T$-integrated dielectron $v_2$ as a function of $M_{ee}$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV.

  • Figure 22 (hadron data)

    Hadron from Figure 22

    10.17182/hepdata.96269.v1/t16

    The $v_2$ of hadrons $\pi$, $K$, $p$, $\phi$ and $\Lambda$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200...

  • Figure 22 (sim. data)

    Simulated data from Figure 22

    10.17182/hepdata.96269.v1/t17

    The $p_T$-integrated dielectron $v_2$ as a function of $M_{ee}$ in minimum-bias Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV,...

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