Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freezeout in Heavy Ion Collisions

Bazavov A, Ding H, Hegde P, Kaczmarek O, Karsch F, Laermann E, Maezawa Y, Mukherjee S, Ohno H, Petreczky P, Schmidt C, et al. (2014)
Physical Review Letters 113(7): 072001.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
We compare lattice QCD results for appropriate combinations of net strangeness fluctuations and their correlations with net baryon number fluctuations with predictions from two hadron resonance gas (HRG) models having different strange hadron content. The conventionally used HRG model based on experimentally established strange hadrons fails to describe the lattice QCD results in the hadronic phase close to the QCD crossover. Supplementing the conventional HRG with additional, experimentally uncharted strange hadrons predicted by quark model calculations and observed in lattice QCD spectrum calculations leads to good descriptions of strange hadron thermodynamics below the QCD crossover. We show that the thermodynamic presence of these additional states gets imprinted in the yields of the ground-state strange hadrons leading to a systematic 5-8 MeV decrease of the chemical freeze-out temperatures of ground-state strange baryons.
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Physical Review Letters
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113
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7
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072001
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Bazavov A, Ding H, Hegde P, et al. Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freezeout in Heavy Ion Collisions. Physical Review Letters. 2014;113(7):072001.
Bazavov, A., Ding, H., Hegde, P., Kaczmarek, O., Karsch, F., Laermann, E., Maezawa, Y., et al. (2014). Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freezeout in Heavy Ion Collisions. Physical Review Letters, 113(7), 072001. doi:10.1103/PhysRevLett.113.072001
Bazavov, A., Ding, H., Hegde, P., Kaczmarek, O., Karsch, F., Laermann, E., Maezawa, Y., Mukherjee, S., Ohno, H., Petreczky, P., et al. (2014). Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freezeout in Heavy Ion Collisions. Physical Review Letters 113, 072001.
Bazavov, A., et al., 2014. Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freezeout in Heavy Ion Collisions. Physical Review Letters, 113(7), p 072001.
A. Bazavov, et al., “Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freezeout in Heavy Ion Collisions”, Physical Review Letters, vol. 113, 2014, pp. 072001.
Bazavov, A., Ding, H., Hegde, P., Kaczmarek, O., Karsch, F., Laermann, E., Maezawa, Y., Mukherjee, S., Ohno, H., Petreczky, P., Schmidt, C., Sharma, S., Söldner, W., Wagner, M.: Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freezeout in Heavy Ion Collisions. Physical Review Letters. 113, 072001 (2014).
Bazavov, A., Ding, Hengtong, Hegde, P., Kaczmarek, Olaf, Karsch, Frithjof, Laermann, Edwin, Maezawa, Yu, Mukherjee, Swagato, Ohno, H., Petreczky, P., Schmidt, Christian, Sharma, Sayantan, Söldner, Wolfgang, and Wagner, Mathias. “Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freezeout in Heavy Ion Collisions”. Physical Review Letters 113.7 (2014): 072001.

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PMID: 28821866

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