Multistrange baryon production in Au-Au collisions at S(NN)**1/2 = 130 GeV

The collaboration
Phys.Rev.Lett. 92 (2004) 182301, 2004.

Abstract (data abstract)
The transverse mass spectra and midrapidity yields for $\Xi$s and $\Omega$s are presented. For the 10% most central collisions, the $\bar{\Xi}^+/h^-$ ratio increases from the Super Proton Synchrotron to the Relativistic Heavy Ion Collider energies while the $\Xi^-/h^-$ stays approximately constant. A hydrodynamically inspired model fit to the $\Xi$ spectra, which assumes a thermalized source, seems to indicate that these multistrange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to $\pi$, $K$, $p$, and $\Lambda$s.

• #### Figure 1.0

Data from Figure 1.0

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$m_T$ spectra of $\Xi^-$ and $\bar{\Xi}^+$ for 0-10% centrality. Errors listed here are the quadrature sum of statistical and point-to-point...

• #### Figure 1.1

Data from Figure 1.0

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$m_T$ spectra of $\Xi^-$ and $\bar{\Xi}^+$ for 10-25% centrality. Errors listed here are the quadrature sum of statistical and point-to-point...

• #### Figure 1.2

Data from Figure 1.0

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$m_T$ spectra of $\Xi^-$ and $\bar{\Xi}^+$ for 25-75% centrality. Errors listed here are the quadrature sum of statistical and point-to-point...

• #### Figure 1.3

Data from Figure 1.0

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$m_T$ spectra of $\Omega^-+\bar{\Omega}^+$ for 0-10% centrality. Errors listed here are the quadrature sum of statistical and point-to-point systematic uncertainties....

• #### Table 1.0

Data from Table 1.0

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Fit parameters for $m_T$ spectra of $\Xi^-$.

• #### Table 1.1

Data from Table 1.0

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Fit parameters for $m_T$ spectra of $\bar{\Xi}^+$.

• #### Table 1.2

Data from Table 1.0

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Fit parameters for $m_T$ spectra of $\Omega^-+\bar{\Omega}^+$.

• #### Figure 2.0

Data from Figure 2.0 and Table 2.0

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Particle ratio in 0-10% centrality.

• #### Table 2.0

Data from Table 2.0

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Particle ratio in 0-10% centrality from the statiscal model.

• #### Table 2.1

Data from Table 2.0

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Particle ratio from nonequilibrium model.

• #### Table 2.2

Data from Table 2.0

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Particle ratio from HIJING/$B\bar{B}$.

• #### Figure 3.0

Data from Figure 3.0

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Kinetic freeze-out temperature and transverse flow velocity obtained from the fits to $m_T$ spectra for 0-10% centrality.

• #### Figure 3.1

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Kinetic freeze-out temperature and transverse flow velocity of $\Xi^-+\bar{\Xi}^+$ (1$\sigma$ contour).

• #### Figure 3.2

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Kinetic freeze-out temperature and transverse flow velocity of $\Xi^-+\bar{\Xi}^+$ (2$\sigma$ contour).

• #### Figure 3.3

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Kinetic freeze-out temperature and transverse flow velocity of $\Xi^-+\bar{\Xi}^+$ (3$\sigma$ contour).

• #### Figure 3.4

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Kinetic freeze-out temperature and transverse flow velocity of $\pi$, $K$, $p$, $\Lambda$ (1$\sigma$ contour).

• #### Figure 3.5

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Kinetic freeze-out temperature and transverse flow velocity of $\pi$, $K$, $p$, $\Lambda$ (2$\sigma$ contour).

• #### Figure 3.6

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Kinetic freeze-out temperature and transverse flow velocity of $\pi$, $K$, $p$, $\Lambda$ (3$\sigma$ contour).

• #### Figure 3.7

Data from Figure 3.0

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Mean transverse momentum $\langle p_T \rangle$. Results from best fits to spectra, Bose-Einstein for $\pi$, exponential for $K$, hydrodynamically-inspired function...