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Low-$p_T$ $e^{+}e^{-}$ pair production in Au$+$Au collisions at $\sqrt{s_{NN}}$ = 200 GeV and U$+$U collisions at $\sqrt{s_{NN}}$ = 193 GeV at STAR

The STAR collaboration
Phys.Rev.Lett. 121 (2018) 132301, 2018.

Abstract (data abstract)
Low-pT e+e− pair production in Au+Au collisions at $\sqrt{s_{{NN}}}$ = 200 GeV and U+U collisions at $\sqrt{s_{{NN}}}$ = 193 GeV at STAR

  • Figure 1A : 60-80% Au+Au collisions

    Data from Figure 1A (60 - 80% Au+Au collisions)

    10.17182/hepdata.84821.v1/t1

    The centrality dependence of e+e− invariant mass spectra within the STAR acceptance from Au+Au collisions and U+U collisions for pair...

  • Figure 1A : 60-80% U+U collisions

    Data from Figure 1A (60-80% U+U collisions)

    10.17182/hepdata.84821.v1/t2

    The centrality dependence of e+e− invariant mass spectra within the STAR acceptance from Au+Au collisions and U+U collisions for pair...

  • Figure 1A : 40-60% Au+Au collisions

    Data from Figure 1A (40-60% Au+Au collisions)

    10.17182/hepdata.84821.v1/t3

    The centrality dependence of e+e− invariant mass spectra within the STAR acceptance from Au+Au collisions and U+U collisions for pair...

  • Figure 1A : 40-60% U+U collisions

    Data from Figure 1A (40-60% U+U collisions)

    10.17182/hepdata.84821.v1/t4

    The centrality dependence of e+e− invariant mass spectra within the STAR acceptance from Au+Au collisions and U+U collisions for pair...

  • Figure 1A : 10-40% Au+Au collisions

    Data from Figure 1A (10-40% Au+Au collisions)

    10.17182/hepdata.84821.v1/t5

    The centrality dependence of e+e− invariant mass spectra within the STAR acceptance from Au+Au collisions and U+U collisions for pair...

  • Figure 1A : 10-40% U+U collisions

    Data from Figure 1A (10-40% U+U collisions)

    10.17182/hepdata.84821.v1/t6

    The centrality dependence of e+e− invariant mass spectra within the STAR acceptance from Au+Au collisions and U+U collisions for pair...

  • Figure 1B : 60-80% Au+Au collisions

    Data from Figure 1B (60 - 80% Au+Au collisions)

    10.17182/hepdata.84821.v1/t7

    The corresponding ratios of data over cocktail for Figure 1.

  • Figure 1B : 60-80% U+U collisions

    Data from Figure 1B (60-80% U+U collisions)

    10.17182/hepdata.84821.v1/t8

    The corresponding ratios of data over cocktail for Figure 1.

  • Figure 1B : 40-60% Au+Au collisions

    Data from Figure 1B (40-60% Au+Au collisions)

    10.17182/hepdata.84821.v1/t9

    The corresponding ratios of data over cocktail for Figure 1.

  • Figure 1B : 40-60% U+U collisions

    Data from Figure 1B (40-60% U+U collisions)

    10.17182/hepdata.84821.v1/t10

    The corresponding ratios of data over cocktail for Figure 1.

  • Figure 1B : 10-40% Au+Au collisions

    Data from Figure 1B (10-40% Au+Au collisions)

    10.17182/hepdata.84821.v1/t11

    The corresponding ratios of data over cocktail for Figure 1.

  • Figure 1B : 10-40% U+U collisions

    Data from Figure 1B (10-40% U+U collisions)

    10.17182/hepdata.84821.v1/t12

    The corresponding ratios of data over cocktail for Figure 1.

  • Figure 2 : 0.40< Mee <0.76 GeV/c2 in Au+Au collisions

    Data from Figure 2 (0.40< Mee <0.76 GeV/c2 in Au+Au collisions)

    10.17182/hepdata.84821.v1/t13

    The e+e− pair pT distributions within the STAR acceptance for different mass regions in 60%–80% Au+Au and U+U collisions compared...

  • Figure 2 : 0.40< Mee <0.76 GeV/c2 in U+U collisions

    Data from Figure 2 (0.40< Mee <0.76 GeV/c2 in U+U collisions)

    10.17182/hepdata.84821.v1/t14

    The e+e− pair pT distributions within the STAR acceptance for different mass regions in 60%–80% Au+Au and U+U collisions compared...

  • Figure 2 : 0.76< Mee <1.20 GeV/c2 in Au+Au collisionss

    Data from Figure 2 (0.76< Mee <1.20 GeV/c2 in Au+Au collisions)

    10.17182/hepdata.84821.v1/t15

    The e+e− pair pT distributions within the STAR acceptance for different mass regions in 60%–80% Au+Au and U+U collisions compared...

  • Figure 2 : 0.76< Mee <1.20 GeV/c2 in U+U collisions

    Data from Figure 2 (0.76< Mee <1.20 GeV/c2 in U+U collisions)

    10.17182/hepdata.84821.v1/t16

    The e+e− pair pT distributions within the STAR acceptance for different mass regions in 60%–80% Au+Au and U+U collisions compared...

  • Figure 2 : 1.20< Mee <2.60 GeV/c2 in Au+Au collisions

    Data from Figure 2 (1.20< Mee <2.60 GeV/c2 in Au+Au collisions)

    10.17182/hepdata.84821.v1/t17

    The e+e− pair pT distributions within the STAR acceptance for different mass regions in 60%–80% Au+Au and U+U collisions compared...

  • Figure 2 : 1.20< Mee <2.60 GeV/c2 in U+U collisions

    Data from Figure 2 (1.20< Mee <2.60 GeV/c2 in U+U collisions)

    10.17182/hepdata.84821.v1/t18

    The e+e− pair pT distributions within the STAR acceptance for different mass regions in 60%–80% Au+Au and U+U collisions compared...

  • Figure 3A : 60-80% Au+Au collisions

    Data from Figure 3A (60-80% Au+Au collisions)

    10.17182/hepdata.84821.v1/t19

    The low-pT (pT < 0.15 GeV/c) e+e− excess mass spectra (data − cocktail) within the STAR acceptance in 60%–80% for...

  • Figure 3A : 60-80% U+U collisions

    Data from Figure 3A (60-80% U+U collisions)

    10.17182/hepdata.84821.v1/t20

    The low-pT (pT < 0.15 GeV/c) e+e− excess mass spectra (data − cocktail) within the STAR acceptance in 60%–80% for...

  • Figure 3B : 60-80% Au+Au collisions

    Data from Figure 3B (60-80% Au+Au collisions)

    10.17182/hepdata.84821.v1/t21

    The low-pT (pT < 0.15 GeV/c) e+e− excess mass spectra (data − cocktail) within the STAR acceptance in 40%–60% for...

  • Figure 3B : 60-80% U+U collisions

    Data from Figure 3B (60-80% U+U collisions)

    10.17182/hepdata.84821.v1/t22

    The low-pT (pT < 0.15 GeV/c) e+e− excess mass spectra (data − cocktail) within the STAR acceptance in 40%–60% for...

  • Figure 3C : 0.40-0.76 GeV/c2 in Au+Au collisions

    Data from Figure 3C (0.40-0.76 GeV/c2 in Au+Au collisions)

    10.17182/hepdata.84821.v1/t23

    The centrality dependence of integrated excess yields in the mass regions of 0.4–0.76, 0.76–1.2, and 1.2–2.6 GeV=c2 in Au +...

  • Figure 3C : 0.40-0.76 GeV/c2 in U+U collisions

    Data from Figure 3C (0.40-0.76 GeV/c2 in U+U collisions)

    10.17182/hepdata.84821.v1/t24

    The centrality dependence of integrated excess yields in the mass regions of 0.4–0.76, 0.76–1.2, and 1.2–2.6 GeV=c2 in Au +...

  • Figure 3C : 0.76-1.20 GeV/c2 in Au+Au collisions

    Data from Figure 3C (0.76-1.20 GeV/c2 in Au+Au collisions)

    10.17182/hepdata.84821.v1/t25

    The centrality dependence of integrated excess yields in the mass regions of 0.4–0.76, 0.76–1.2, and 1.2–2.6 GeV=c2 in Au +...

  • Figure 3C : 0.76-1.20 GeV/c2 in U+U collisions

    Data from Figure 3C (0.76-1.20 GeV/c2 in U+U collisions)

    10.17182/hepdata.84821.v1/t26

    The centrality dependence of integrated excess yields in the mass regions of 0.4–0.76, 0.76–1.2, and 1.2–2.6 GeV=c2 in Au +...

  • Figure 3C : 1.20-2.60 GeV/c2 in Au+Au collisions

    Data from Figure 3C (1.20-2.60 GeV/c2 in Au+Au collisions)

    10.17182/hepdata.84821.v1/t27

    The centrality dependence of integrated excess yields in the mass regions of 0.4–0.76, 0.76–1.2, and 1.2–2.6 GeV=c2 in Au +...

  • Figure 3C : 1.20-2.60 GeV/c2 in U+U collisions

    Data from Figure 3C (1.20-2.60 GeV/c2 in U+U collisions)

    10.17182/hepdata.84821.v1/t28

    The centrality dependence of integrated excess yields in the mass regions of 0.4–0.76, 0.76–1.2, and 1.2–2.6 GeV/c2 in Au +...

  • Figure 4A : 0.40< Mee <0.76 GeV/c2 in 60-80% Au+Au collisions

    Data from Figure 4A (0.40< Mee <0.76 GeV/c2 in 60-80% Au+Au collisions)

    10.17182/hepdata.84821.v1/t29

    The p2T distributions of excess yields within the STAR acceptance in the mass regions of 0.4–0.76 GeV/c2 in 60%–80% Au...

  • Figure 4A : 0.40< Mee <0.76 GeV/c2 in 60-80% U+U collisions

    Data from Figure 4A (0.40< Mee <0.76 GeV/c2 in 60-80% U+U collisions)

    10.17182/hepdata.84821.v1/t30

    The p2T distributions of excess yields within the STAR acceptance in the mass regions of 0.4–0.76 GeV/c2 in 60%–80% Au...

  • Figure 4B : 0.76< Mee <1.20 GeV/c2 in 60-80% Au+Au collisions

    Data from Figure 4B (0.76< Mee <1.20 GeV/c2 in 60-80% Au+Au collisions)

    10.17182/hepdata.84821.v1/t31

    The p2T distributions of excess yields within the STAR acceptance in the mass regions of 0.76–1.2 GeV/c2 in 60%–80% Au...

  • Figure 4B : 0.76< Mee <1.20 GeV/c2 in 60-80% U+U collisions

    Data from Figure 4B (0.76< Mee <1.20 GeV/c2 in 60-80% U+U collisions)

    10.17182/hepdata.84821.v1/t32

    The p2T distributions of excess yields within the STAR acceptance in the mass regions of 0.76–1.2 GeV/c2 in 60%–80% Au...

  • Figure 4C : 1.20< Mee <2.60 GeV/c2 in 60-80% Au+Au collisions

    Data from Figure 4C (1.20< Mee <2.60 GeV/c2 in 60-80% Au+Au collisions)

    10.17182/hepdata.84821.v1/t33

    The p2T distributions of excess yields within the STAR acceptance in the mass regions of 1.2–2.6 GeV/c2 in 60%–80% Au...

  • Figure 4C : 1.20< Mee <2.60 GeV/c2 in 60-80% U+U collisions

    Data from Figure 4C (1.20< Mee <2.60 GeV/c2 in 60-80% U+U collisions)

    10.17182/hepdata.84821.v1/t34

    The p2T distributions of excess yields within the STAR acceptance in the mass regions of 1.2–2.6 GeV/c2 in 60%–80% Au...

  • Figure 4D : 60-80% Au+Au collisions

    Data from Figure 4D (60-80% Au+Au collisions)

    10.17182/hepdata.84821.v1/t35

    The corresponding sqrt(p2T) of excess yields. The vertical bars on data points are the combined statistical and systematic uncertainties.

  • Figure 4D : 60-80% U+U collisions

    Data from Figure 4D (60-80% U+U collisions)

    10.17182/hepdata.84821.v1/t36

    The corresponding sqrt(p2T) of excess yields. The vertical bars on data points are the combined statistical and systematic uncertainties.

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