Off-of-equilibrium effects on Kurtosis Along Strangeness-Neutral Trajectories

Journal Article · 01 February 2022 · EPJ Web of Conferences (Online)

DOI: https://doi.org/10.1051/epjconf/202225910001 · OSTI ID:2280598

Dore, Travis ^[1]; Karthein, Jamie ^[2]; Mroczek, Debora ^[3]; Parotto, Paolo ^[4]; Noronha-Hostler, Jacquelyn ^[3]; Ratti, Claudia ^[3]

---

1. Univ. of Illinois at Urbana-Champaign, IL (United States); University of Illinois Urbana-Champaign
2. Univ. of Houston, TX (United States)
3. Univ. of Illinois at Urbana-Champaign, IL (United States)
4. Univ. of Wuppertal (Germany)

The Beam Energy Scan program at the Relativistic Heavy Ion Collider (RHIC) is searching for the QCD critical point. The main signal for the critical point is the kurtosis of the distribution of proton yields obtained on an event by event basis where one expects a peak at the critical point. However, its exact behavior is still an open question due to out-of-equilibrium effects and uncertainty in the equation of state. Here we use a simplistic hydrodynamic model that enforces strangeness-neutrality, selecting trajectories that pass close to the critical point. We vary the initial conditions to estimate the effect of out-of-equilibrium hydrodynamics on the kurtosis signal.

• Research Organization: Univ. of Illinois at Urbana-Champaign, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: SC0020633
• OSTI ID: 2280598
• Journal Information: EPJ Web of Conferences (Online), Journal Name: EPJ Web of Conferences (Online) Vol. 259; ISSN 2100-014X
• Publisher: EDP SciencesCopyright Statement
• Country of Publication: United States
• Language: English