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Pion Interferometry in Au+Au and Cu+Cu Collisions at RHIC

The STAR collaboration Abelev, B.I. ; Aggarwal, M.M. ; Ahammed, Z. ; et al.
Phys.Rev.C 80 (2009) 024905, 2009.
Inspire Record 814937 DOI 10.17182/hepdata.97124

We present a systematic analysis of two-pion interferometry in Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 62.4 GeV and Cu+Cu collisions at $\sqrt{s_{\rm{NN}}}$ = 62.4 and 200 GeV using the STAR detector at RHIC. The multiplicity and transverse momentum dependences of the extracted femtoscopic radii are studied. The scaling of the apparent freeze-out volume with charged particle multiplicity is studied for the RHIC energy domain. The multiplicity scaling of the measured radii is found to be independent of colliding system and collision energy.

12 data tables
Figure 1

HBT parameters for all centralities of 62.4 GeV Au+Au

Figure 2

HBT parameters for 200 and 62.4 GeV Au+Au, 0-5%

Figure 3

Energy dependence of the pi- HBT parameters for central Au+Au, Pb+Pb, and Pb+Au collisions (AGS,SPS and RHIC) at midrapidity and k_T ~ 0.2-0.3 GeV/c.

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