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

The 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)

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,...