Measurements of relative mass-to-charge ratio differences between nuclei and antinuclei (He - antiHe, STAR 2019)

Measured Lambda binding energy in the hypertriton compared to earlier results and theoretical calculations (earlier results)

Measured Lambda binding energy in the hypertriton compared to earlier results and theoretical calculations (current STAR measurements)

Measured Lambda binding energy in the hypertriton compared to earlier results and theoretical calculations (theoretical calculations)

Multiplicity in Au+Au collisions at $\sqrt{s_{NN}}$ = 130 GeV

Transverse energy in Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 GeV

Multiplicity in Au+Au collisions at $\sqrt{s_{NN}}$ = 62.4 GeV

Transverse energy in Au+Au collisions at $\sqrt{s_{NN}}$ = 39 GeV

Multiplicity in Au+Au collisions at $\sqrt{s_{NN}}$ = 39 GeV

Transverse energy in Au+Au collisions at $\sqrt{s_{NN}}$ = 27 GeV

Multiplicity in Au+Au collisions at $\sqrt{s_{NN}}$ = 27 GeV

Transverse energy in Au+Au collisions at $\sqrt{s_{NN}}$ = 19.6 GeV

Multiplicity in Au+Au collisions at $\sqrt{s_{NN}}$ = 19.6 GeV

Transverse energy in Au+Au collisions at $\sqrt{s_{NN}}$ = 14.5 GeV

Multiplicity in Au+Au collisions at $\sqrt{s_{NN}}$ = 14.5 GeV

Transverse energy in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7 GeV

Multiplicity in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7 GeV

Transverse energy in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 200 GeV

Multiplicity in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 200 GeV

Transverse energy in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 62.4 GeV

Multiplicity in Cu+Cu collisions at $\sqrt{s_{NN}}$ = 62.4 GeV

Transverse energy in Cu+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Multiplicity in Cu+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Transverse energy in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV

Multiplicity in U+U collisions at $\sqrt{s_{NN}}$ = 193 GeV

Transverse energy in d+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Multiplicity in d+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Transverse energy in He+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

Multiplicity in He+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

$\pi^0$ meson $v_4, 20-40\%$ centrality

$\pi^0$ meson $v_4, 40-60\%$ centrality

$\pi^0$ meson $v_4, 20-60\%$ centrality

$\pi^0$ meson $v_4/v_2^2, 0-20\%$ centrality

$\pi^0$ meson $v_4/v_2^2, 20-40\%$ centrality

$\pi^0$ meson $v_4/v_2^2, 40-60\%$ centrality

$\pi^0$ meson $v_4/v_2^2, 20-60\%$ centrality

$\Eta/ \pi^0 ratios

$\pi^0$ nuclear modification factors

$\pi^0$ nuclear modification factors

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 0^{\circ}-15^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 0^{\circ}-15^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 15^{\circ}-30^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 15^{\circ}-30^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 30^{\circ}-45^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 30^{\circ}-45^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 45^{\circ}-60^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 45^{\circ}-60^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 60^{\circ}-75^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 60^{\circ}-75^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 75^{\circ}-90^{\circ}$

$pi^0$ nuclear modification factors vs reaction plane, $\Delta \phi = 75^{\circ}-90^{\circ}$

Centrality dependence of $p_T$ ingetrated $R_{AA}(\Delta \phi)$

Centrality dependence of $p_T$ ingetrated $R_{AA}(\Delta \phi)$

$\Omega + \bar{\Omega}$ invariant mass spectra from Cu+Cu $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The uncertainties on the spectra points are statistical and systematic combined.

$K^0_S$ invariant mass spectra from Au+Au $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The uncertainties on the spectra points are statistical and systematic combined.

$\Lambda$ and $\bar{\Lambda}$ invariant mass spectra from Au+Au $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The $\Lambda$ and $\bar{\Lambda}$ yields have not been feed down subtracted from weak decays. The uncertainties on the spectra points are statistical and systematic combined.

$K^0_S$, $\Lambda$, and $\bar{\Lambda}$, spectra divided by $\langle N_{part} \rangle$ for Cu+Cu $0 − 10\%$ ($\langle N_{part} \rangle \sim 99$) and Au+Au $20 − 40\%$ ($\langle N_{part} \rangle \sim 141$) $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The $\Lambda$ and $\bar{\Lambda}$ yields have been feed down subtracted from weak decays. The uncertainties on the spectra points are statistical and systematic; for clarity the uncertainty on $\langle N_{part} \rangle$ has not been included. The curves show the functions described in the text used to extract $dN/dy$.

$\Xi + \bar{\Xi}$ spectra divided by $\langle N_{part} \rangle$ for Cu+Cu $0 − 10\%$ ($\langle N_{part} \rangle \sim 99$) $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The uncertainties on the spectra points are statistical and systematic; for clarity the uncertainty on $\langle N_{part} \rangle$ has not been included. The curves show the functions described in the text used to extract $dN/dy$.

$\Xi + \bar{\Xi}$ spectra divided by $\langle N_{part} \rangle$ for Au+Au $20 − 40\%$ ($\langle N_{part} \rangle \sim 141$) $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The uncertainties on the spectra points are statistical and systematic; for clarity the uncertainty on $\langle N_{part} \rangle$ has not been included. The curves show the functions described in the text used to extract $dN/dy$.

$\Omega + \bar{\Omega}$ spectra divided by $\langle N_{part} \rangle$ for Cu+Cu $0 − 10\%$ ($\langle N_{part} \rangle \sim 99$) $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The uncertainties on the spectra points are statistical and systematic; for clarity the uncertainty on $\langle N_{part} \rangle$ has not been included. The curves show the functions described in the text used to extract $dN/dy$.

$\Omega + \bar{\Omega}$ spectra divided by $\langle N_{part} \rangle$ for Au+Au $20 − 40\%$ ($\langle N_{part} \rangle \sim 141$) $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The uncertainties on the spectra points are statistical and systematic; for clarity the uncertainty on $\langle N_{part} \rangle$ has not been included. The curves show the functions described in the text used to extract $dN/dy$.

The enhancement factor for (multi-) strange particles in Cu+Cu $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The $\Lambda$, and $\bar{\Lambda}$ yields have been feed-down subtracted in all cases. The black bars show the normalization uncertainties, and the uncertainties for the heavy-ion points are the combined statistical and systematic errors. Curves described in the text, where $B_{K} = 2.0$, $B_{\Lambda} = 2.4$, $B_{\Xi} = 5.0$ and $B_{\Omega} = 12.1$.

The enhancement factor for (multi-) strange particles in Au+Au $\sqrt{s_{NN}} = 200$ GeV collisions, where $|y| < 0.5$. The $\Lambda$, and $\bar{\Lambda}$ yields have been feed-down subtracted in all cases. The black bars show the normalization uncertainties, and the uncertainties for the heavy-ion points are the combined statistical and systematic errors. Curves described in the text, where $B_{K} = 2.0$, $B_{\Lambda} = 2.4$, $B_{\Xi} = 5.0$ and $B_{\Omega} = 12.1$.

Ratio of particle yields in central Cu+Cu and midcentral Au+Au collisions when $\langle N_{part} \rangle = 99$ in each case for $|y| < 0.5$. $\pi$ yields are from elsewhere [17]. Boxed uncertainties are from the Glauber calculations and are correlated for every particle. $\langle N_{part>1} \rangle$ refers to the parameterization shown by eq. 1, while the EPOS and AMPT models are described in the text. The default settings are used for each model. The vertical lines show the remaining independent statistical and systematic uncertainties.

The $K^{*0}$ mass (upper panel) and width (lower panel) as a function of $p_T$ for minimum bias $p + p$ interactions and for central Au+Au collisions. The solid straight lines are the standard $K^{*0}$ mass (896.1 MeV/$c^2$ ) and width (50.7 MeV/$c^2$), respectively. The dashed and dotted curves are the MC results in minimum bias $p+p$ and for central Au+Au collisions, respectively, after considering detector effects and kinematic cuts. The grey shadows (caps) indicate the systematic uncertainties for the measurement in minimum bias $p + p$ interactions (central Au+Au collisions).

The $K^{*0}$ mass (upper panel) and width (lower panel) as a function of $p_T$ for minimum bias $p + p$ interactions and for central Au+Au collisions. The solid straight lines are the standard $K^{*0}$ mass (896.1 MeV/$c^2$ ) and width (50.7 MeV/$c^2$), respectively. The dashed and dotted curves are the MC results in minimum bias $p+p$ and for central Au+Au collisions, respectively, after considering detector effects and kinematic cuts. The grey shadows (caps) indicate the systematic uncertainties for the measurement in minimum bias $p + p$ interactions (central Au+Au collisions).

The $K^{*0}$ mass (upper panel) and width (lower panel) as a function of $p_T$ for minimum bias $p + p$ interactions and for central Au+Au collisions. The solid straight lines are the standard $K^{*0}$ mass (896.1 MeV/$c^2$ ) and width (50.7 MeV/$c^2$), respectively. The dashed and dotted curves are the MC results in minimum bias $p+p$ and for central Au+Au collisions, respectively, after considering detector effects and kinematic cuts. The grey shadows (caps) indicate the systematic uncertainties for the measurement in minimum bias $p + p$ interactions (central Au+Au collisions).

The $K^{*0}$ mass (upper panel) and width (lower panel) as a function of $p_T$ for minimum bias $p + p$ interactions and for central Au+Au collisions. The solid straight lines are the standard $K^{*0}$ mass (896.1 MeV/$c^2$ ) and width (50.7 MeV/$c^2$), respectively. The dashed and dotted curves are the MC results in minimum bias $p+p$ and for central Au+Au collisions, respectively, after considering detector effects and kinematic cuts. The grey shadows (caps) indicate the systematic uncertainties for the measurement in minimum bias $p + p$ interactions (central Au+Au collisions).

The $K_S^0\pi^\pm$ invariant mass distribution integrated over the $K^{*\pm}$ $p_T$ for minimum bias $p + p$ collisions (upper panel) and for the $50-80\%$ of the inelastic hadronic Au+Au crosssection (lower panel) after the mixed-event background subtraction. The solid curves are fits to Eq. 10 and the dashed lines are the linear function representing the residual background.

The $K^{*0}$ and $K^{*\pm}$ reconstruction efficiency multiplied by the detector acceptance as a function of $p_T$ in minimum bias $p + p$ and different centralities in Au+Au collisions.

The $K^{*0}$ and $K^{*\pm}$ reconstruction efficiency multiplied by the detector acceptance as a function of $p_T$ in minimum bias $p + p$ and different centralities in Au+Au collisions.

The $K^{*0}$ and $K^{*\pm}$ reconstruction efficiency multiplied by the detector acceptance as a function of $p_T$ in minimum bias $p + p$ and different centralities in Au+Au collisions.

The $K^{*0}$ and $K^{*\pm}$ reconstruction efficiency multiplied by the detector acceptance as a function of $p_T$ in minimum bias $p + p$ and different centralities in Au+Au collisions.

The $(K^* + \bar{K^*})/2$ invariant yields as a function of $m_T − m_0$ for |y| < 0.5 from minimum bias $p + p$ and different centralities in Au+Au collisions. The top $10\% $central data have been multiplied by two for clarity. The lines are fits to Eq. 12. The errors shown are the quadratic sum of statistical and systematic (in the level of $10\% $) uncertainties.

The $(K^* + \bar{K^*})/2$ invariant yields as a function of $m_T − m_0$ for |y| < 0.5 from minimum bias $p + p$ and different centralities in Au+Au collisions. The top $10\% $central data have been multiplied by two for clarity. The lines are fits to Eq. 12. The errors shown are the quadratic sum of statistical and systematic (in the level of $10\% $) uncertainties.

The $(K^* + \bar{K^*})/2$ invariant yields as a function of $m_T − m_0$ for |y| < 0.5 from minimum bias $p + p$ and different centralities in Au+Au collisions. The top $10\% $central data have been multiplied by two for clarity. The lines are fits to Eq. 12. The errors shown are the quadratic sum of statistical and systematic (in the level of $10\% $) uncertainties.

(Color online) The invariant yields for both $(K^{*0} + \bar{K^{*0}})/2$ and $(K^{*+} + K^{*-})/2$ as a function of $p_T$ for |y| < 0.5 in minimum bias $p + p$ interactions. The dotted curve is the fit to the power-law function from Equation 13 for $p_T$ > 0.5 GeV/$c$ and extended to lower values of $p_T$ . The dashed curve is the $K^{*0}$ spectrum fit to the exponential function from Equation 12 and extended to higher values of $p_T$ . The dashed-dotted curve is the fit to the Levy function from Equation 14 for $p_T$ < 4 GeV/$c$. Errors are statistical only.

(Color online) The invariant yields for both $(K^{*0} + \bar{K^{*0}})/2$ and $(K^{*+} + K^{*-})/2$ as a function of $p_T$ for |y| < 0.5 in minimum bias $p + p$ interactions. The dotted curve is the fit to the power-law function from Equation 13 for $p_T$ > 0.5 GeV/$c$ and extended to lower values of $p_T$ . The dashed curve is the $K^{*0}$ spectrum fit to the exponential function from Equation 12 and extended to higher values of $p_T$ . The dashed-dotted curve is the fit to the Levy function from Equation 14 for $p_T$ < 4 GeV/$c$. Errors are statistical only.

(Color online) The $K^*$ $<p_T>$ as a function of $dN_{ch}/d\eta$ compared to that of $\pi^−$, $K^−$, and $p$ for minimum bias $p+p$ (solid symbols) and Au+Au (open symbols) collisions. The errors shown are the quadratic sum of the statistical and systematic uncertainties.

The $K^*/K$ (upper panel) and $\phi/K^*$ (lower panel) yield ratios as a function of the c.m. system energies. The yield ratios for central Au+Au collisions at $\sqrt{s_{NN}}$=130 [35] and 200 GeV and minimum bias $p+p$ interactions at $\sqrt{s_{NN}}$=200 GeV are compared to measurements from e+e- at sqrt(s) of 10.45 GeV [48], 29 GeV [49] and 91 GeV [50,51], pbar-p at sqrt(s) of 5.6 GeV [52] and pp at sqrt(s) of 27.5 GeV [53], 52.5 GeV [54] and 63 GeV [55]. The errors at $\sqrt{s_{NN}}$=130 and 200 GeV correspond to the quadratic sum of the statistical and systematic errors.

The $K^*/K$ (upper panel) and $\phi/K^*$ (lower panel) yield ratios as a function of the c.m. system energies. The yield ratios for central Au+Au collisions at $\sqrt{s_{NN}}$=130 [35] and 200 GeV and minimum bias $p+p$ interactions at $\sqrt{s_{NN}}$=200 GeV are compared to measurements from e+e- at sqrt(s) of 10.45 GeV [48], 29 GeV [49] and 91 GeV [50,51], pbar-p at sqrt(s) of 5.6 GeV [52] and pp at sqrt(s) of 27.5 GeV [53], 52.5 GeV [54] and 63 GeV [55]. The errors at $\sqrt{s_{NN}}$=130 and 200 GeV correspond to the quadratic sum of the statistical and systematic errors.

The $K^{*0}$ v2 (filled stars) as a function of $p_T$ for minimum bias Au+Au collisions compared to the $K^{0}_S$ (open triangles), $\Lambda$ (open circles), and charged hadron (open diamonds) $v_2$. The errors shown are statistical only.

The $K^*$ $R_{AA}$ (filled triangles) and $R_{CP}$ (filled circles) as a function of $p_T$ compared to the $K^{0}_S$ (open circles) and $\Lambda$ (open triangles) $R_{CP}$. The errors shown are statistical only. The dashed line represents the number of binary collisions scaling. The widths of the grey bands represent the systematic uncertainties of $R_{AA}$ (left) and $R_{CP}$ (right) due to the model calculations of $N_{bin}$.

Data for the number of reconstructed photon conversions as a function of conversion location plots

Corrected photon spectra, pT

Corrected photon spectra, y

Data for the two-photon invariant mass plots

π0 transverse momentum spectra

π0 contribution in the photon spectra spectra

Rapidity distributions of the fiducial yields and integrated $<p_{\perp}>$ for the $0-5\%$ and $70-80\%$ Au+Au collisions. Pion yields are scaled down by a factor of 5. Errors shown are those propagated from Fig.1. Systematic errors on the fiducial yields are $5\%$; those on $<p_{\perp}>$ are $5\%$ for pions and $5-10\%$ for kaons and antiprotons.

Rapidity distributions of the fiducial yields and integrated $<p_{\perp}>$ for the $0-5\%$ and $70-80\%$ Au+Au collisions. Pion yields are scaled down by a factor of 5. Errors shown are those propagated from Fig.1. Systematic errors on the fiducial yields are $5\%$; those on $<p_{\perp}>$ are $5\%$ for pions and $5-10\%$ for kaons and antiprotons.

Mean transverse momentum of negative particles and (b) $K^-/\pi^-$ and $\bar{p}/\pi^-$ ratios as function of the charged hadron multiplicity. Open symbols are for pp, and filled ones are for Au+Au data. (c) Mid-rapidity $K^-/\pi^-$ ratio as function of $\frac{(dN/dy)_{\pi}}{S}$. Systematic errors are shown for STAR data, and statistical errors for other data.

Mean transverse momentum of negative particles and (b) $K^-/\pi^-$ and $\bar{p}/\pi^-$ ratios as function of the charged hadron multiplicity. Open symbols are for pp, and filled ones are for Au+Au data. (c) Mid-rapidity $K^-/\pi^-$ ratio as function of $\frac{(dN/dy)_{\pi}}{S}$. Systematic errors are shown for STAR data, and statistical errors for other data.

Mean transverse momentum of negative particles and (b) $K^-/\pi^-$ and $\bar{p}/\pi^-$ ratios as function of the charged hadron multiplicity. Open symbols are for pp, and filled ones are for Au+Au data. (c) Mid-rapidity $K^-/\pi^-$ ratio as function of $\frac{(dN/dy)_{\pi}}{S}$. Systematic errors are shown for STAR data, and statistical errors for other data.

Mean transverse momentum of negative particles and (b) $K^-/\pi^-$ and $\bar{p}/\pi^-$ ratios as function of the charged hadron multiplicity. Open symbols are for pp, and filled ones are for Au+Au data. (c) Mid-rapidity $K^-/\pi^-$ ratio as function of $\frac{(dN/dy)_{\pi}}{S}$. Systematic errors are shown for STAR data, and statistical errors for other data.

Mean transverse momentum of negative particles and (b) $K^-/\pi^-$ and $\bar{p}/\pi^-$ ratios as function of the charged hadron multiplicity. Open symbols are for pp, and filled ones are for Au+Au data. (c) Mid-rapidity $K^-/\pi^-$ ratio as function of $\frac{(dN/dy)_{\pi}}{S}$. Systematic errors are shown for STAR data, and statistical errors for other data.

Mean transverse momentum of negative particles and (b) $K^-/\pi^-$ and $\bar{p}/\pi^-$ ratios as function of the charged hadron multiplicity. Open symbols are for pp, and filled ones are for Au+Au data. (c) Mid-rapidity $K^-/\pi^-$ ratio as function of $\frac{(dN/dy)_{\pi}}{S}$. Systematic errors are shown for STAR data, and statistical errors for other data.

Mean transverse momentum of negative particles and (b) $K^-/\pi^-$ and $\bar{p}/\pi^-$ ratios as function of the charged hadron multiplicity. Open symbols are for pp, and filled ones are for Au+Au data. (c) Mid-rapidity $K^-/\pi^-$ ratio as function of $\frac{(dN/dy)_{\pi}}{S}$. Systematic errors are shown for STAR data, and statistical errors for other data.

Mean transverse momentum of negative particles and (b) $K^-/\pi^-$ and $\bar{p}/\pi^-$ ratios as function of the charged hadron multiplicity. Open symbols are for pp, and filled ones are for Au+Au data. (c) Mid-rapidity $K^-/\pi^-$ ratio as function of $\frac{(dN/dy)_{\pi}}{S}$. Systematic errors are shown for STAR data, and statistical errors for other data.

$\frac{(dN/dy)_{\pi}}{S}$ (stars), $T_{ch}$ (circles) and $T_{kin}$ (triangles) and (b) $<\beta>$ as a function of the charged hadron multiplicity. Errors are systematic.

$\frac{(dN/dy)_{\pi}}{S}$ (stars), $T_{ch}$ (circles) and $T_{kin}$ (triangles) and (b) $<\beta>$ as a function of the charged hadron multiplicity. Errors are systematic.

The ratios Anti-Λ/Λ, K+/K-, and Anti-Ξ+/Ξ- as a function of pT

Anti-baryon to baryon ratios measured by STAR