Lattice QCD results on cumulant ratios at freeze-out

Karsch F (2017)
In: Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016). Huang HZ, Seto RK, Thaeder JM, Xu N (Eds); Journal of Physics: Conference Series, 779. IOP Publishing.

Konferenzbeitrag | Veröffentlicht | Englisch
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Abstract / Bemerkung
Ratios of cumulants of net proton-number fluctuations measured by the STAR Collaboration show strong deviations from a skellam distribution, which should describe thermal properties of cumulant ratios, if proton-number fluctuations are generated in equilibrium and a hadron resonance gas (HRG) model would provide a suitable description of thermodynamics at the freeze-out temperature. We present some results on sixth order cumulants entering the calculation of the QCD equation of state at non-zero values of the baryon chemical potential (mu_B) and discuss limitations on the applicability of HRG thermodynamics deduced from a comparison between QCD and HRG model calculations of cumulants of conserved charge fluctuations. We show that basic features of the μB-dependence of skewness and kurtosis ratios of net proton-number fluctuations measured by the STAR Collaboration resemble those expected from a O(mu_B^2) QCD calculation of the corresponding net baryon-number cumulant ratios.
Erscheinungsjahr
Titel des Konferenzbandes
Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016)
Band
779
Artikelnummer
012015
Konferenz
16th International Conference on Strangeness in Quark Matter (SQM 2016)
Konferenzort
Berkeley, CA
Konferenzdatum
2016-06-16 – 2016-07-01
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Zitieren

Karsch F. Lattice QCD results on cumulant ratios at freeze-out. In: Huang HZ, Seto RK, Thaeder JM, Xu N, eds. Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016). Journal of Physics: Conference Series. Vol 779. IOP Publishing; 2017.
Karsch, F. (2017). Lattice QCD results on cumulant ratios at freeze-out. In H. Z. Huang, R. K. Seto, J. M. Thaeder, & N. Xu (Eds.), Journal of Physics: Conference Series: Vol. 779. Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016) IOP Publishing. doi:10.1088/1742-6596/779/1/012015
Karsch, F. (2017). “Lattice QCD results on cumulant ratios at freeze-out” in Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016), Huang, H. Z., Seto, R. K., Thaeder, J. M., and Xu, N. eds. Journal of Physics: Conference Series, vol. 779, (IOP Publishing).
Karsch, F., 2017. Lattice QCD results on cumulant ratios at freeze-out. In H. Z. Huang, et al., eds. Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016). Journal of Physics: Conference Series. no.779 IOP Publishing.
F. Karsch, “Lattice QCD results on cumulant ratios at freeze-out”, Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016), H.Z. Huang, et al., eds., Journal of Physics: Conference Series, vol. 779, IOP Publishing, 2017.
Karsch, F.: Lattice QCD results on cumulant ratios at freeze-out. In: Huang, H.Z., Seto, R.K., Thaeder, J.M., and Xu, N. (eds.) Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016). Journal of Physics: Conference Series. 779, IOP Publishing (2017).
Karsch, Frithjof. “Lattice QCD results on cumulant ratios at freeze-out”. Proceedings, 16th International Conference on Strangeness in Quark Matter (SQM 2016). Ed. Huan Zhong Huang, Richard K. Seto, Jochen Mathias Thaeder, and Nu Xu. IOP Publishing, 2017.Vol. 779. Journal of Physics: Conference Series.
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