A S Hirsch

Learn More
STAR's measurements of directed flow (v1) around midrapidity for π±, K±, KS0, p, and p[over ¯] in Au+Au collisions at √[sNN]=200  GeV are presented. A negative v1(y) slope is observed for most of produced particles (π±, K±, KS0, and p[over ¯]). In 5%-30% central collisions, a sizable difference is present between the v1(y) slope of protons and antiprotons,(More)
We have measured deconfined hadronic volumes, 4.4 < V < 13.0 fm 3 , produced by a one-dimensional (1D) expansion. These volumes are directly proportional to the charged particle pseudorapidity densities 6.75 < dN c /dη < 20.2. The hadronization temperature is T = 179.5 ± 5(syst) MeV. Using Bjorken's 1D model, the hadronization energy density is F = 1.10 ±(More)
We have investigated reach-through silicon avalanche diodes (AVDs) as time of flight detectors for nuclear and particle physics experiments. The signal is initiated by a minimum ionizing charged particle passing directly through the AVD We have studied the effect of pulse amplitude and noise characteristics on timing using (3-particles. The time resolution(More)
Source images are extracted from two-particle correlations constructed from strange and nonstrange hadrons produced in 6A GeV Au+Au collisions. Very different source images result from pp vs p Lambda vs pi(-)pi(-) correlations. Scaling by transverse mass can describe the apparent source size ratio for p/pi(-) but not for Lambda/pi(-) or Lambda/p. These(More)
  • 1