Bulk Properties in Au+Au Collisions at sNN\sqrt{s_{NN}} = 9.2 GeV in STAR Experiment at RHIC

One of the primary goals of high-energy heavy-ion collisions is to establish the QCD phase diagram and search for possible phase boundaries. The planned RHIC energy scan program will explore this exciting physics topic using heavy-ion collisions at various center of mass energies. The first test run with Au+Au collisions at $\sqrt{s_{NN}}$ = 9.2 GeV took place in early 2008. We present the results on identified particle ratios, azimuthal anisotropy parameters (v1 and v2) and HBT at midrapidity using data from this run. These results are compared to data for both lower and higher center of mass energies at the AGS, SPS and RHIC. These new data demonstrate the capabilities of the STAR detector for exploring the QCD phase diagram.Comment: 4 pages, 2 figures: Re-submitted to appear in proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennesse

Transition from Baryonic to Mesonic Freeze-Out

The recently discovered sharp peak in the K+/pi+ ratio is discussed in the framework of the statistical model. In this model a rapid change is expected as the hadronic gas undergoes a transition from a baryon-dominated to a meson-dominated gas. The transition happens at sqrt{s_{NN}} = 8.16 GeV, temperature T = 140 MeV and baryon chemical potential mu_B = 410 MeV. The maximum in the Lambda/pi ratio is well reproduced by the statistical model, but the change in the K+/pi+ ratio is much less pronounced than the one observed by the NA49 collaboration. Further experimental tests are proposed to clarify the nature of the transition. In particular, the maxima expected in the statistical model for the Xi/pi and Omega/pi ratios occur at slightly higher beam energies than the maxima for the Lambda/pi and K+/pi+ ratios.Comment: 5 pages, 5 postscript figures, uses elsart.st

Transverse Energy per Charged Particle and Freeze-Out Criteria in Heavy-Ion Collisions

In relativistic nucleus-nucleus collisions the transverse energy per charged particle, E_T/N_ch, increases rapidly with beam energy and remains approximately constant at about 800 MeV for beam energies from SPS to RHIC. It is shown that the hadron resonance gas model describes the energy dependence, as well as the lack of centrality dependence, qualitatively. The values of E_T/N_ch are related to the chemical freeze-out criterium E/N about 1 GeV valid for primordial hadrons.Comment: 8 pages, 5 figure

Mid-rapidity π±\pi^\pm, K±K^\pm, and pˉ\bar{p} spectra and particle ratios from STAR

Results are presented on $\pi^\pm$, $K^\pm$, and $\bar{p}$ transverse mass spectra and particle multiplicity ratios at mid-rapidity in Au+Au collisions at $\sqrt{s_{_{\rm NN}}}$=130 and 200 GeV and in p+p collisions at $\sqrt{s}$=200 GeV. Comparisons are made to results from lower energies. The bulk properties of the collision inferred from these results are discussed.Comment: 4 pages, 3 figures, Talk presented at Quark Matter 2002, Nantes, France, July 200

Myles Away from Perfect: The Potential Impact on NIL Deals following LSU Quarterback’s Retirement

Just prior to the 2022 College Football Season, Louisiana State University Quarterback Myles Brennan decided to abruptly retire from football. Despite the unexpected finish to his career, Brennan is still going to likely retain all of the money he received in endorsements that were paid through the newly approved “NIL” deals available to collegiate athletes, as a result of a stipulation that these deals cannot be “performance-based”. In this article, Brian Ahle evaluates the potential ways in which endorsers may be able to protect their investments, while still complying with the NIL Policies that provide protections towards the athletes.https://scholarship.law.slu.edu/lawjournalonline/1100/thumbnail.jp