The thermodynamics of heavy light hadrons at freezeout

20 May 2014, 16:30
spectrum (darmstadtium)



Board: J-13
Poster Thermodynamics and Hadron Chemistry Poster session


Dr Sayantan Sharma (Bielefeld University)


In the discussion of hadronization at or close to the freeze-out curve, statistical (hadron resonance gas) models play an important role. In particular in the charmonium sector, regeneration models are considered which rely on the fact that charmonium states can form again already at temperatures well above the QCD crossover or hadronization temperature. An important ingredient in these considerations is the regeneration or hadronization of open charm states. In this talk we report on a lattice QCD analysis of correlations of open strangeness [1] and charm [2] with other conserved quantum numbers like the net baryon number and electric charge. We analyze the temperature range in which an uncorrelated hadron resonance gas (HRG) provides an adequate description of such correlations. This limits the range of validity of HRG based thermodynamics in open flavor channels and provides an estimate for the melting temperature of heavy-light hadrons. We find that the strange or charmed HRG description breaks down at or very close to the QCD crossover temperature. References: [1] A. Bazavov, H.-T. Ding, P. Hegde, O. Kaczmarek, F. Karsch, E. Laermann, Y. Maezawa, Swagato Mukherjee, H. Ohno, P. Petreczky, C. Schmidt, S. Sharma, W. Soeldner and M. Wagner (Bielefeld-BNL collaboration) "Strangeness at high temperatures: from hadrons to quarks" Phys. Rev. Lett. 111, 082301 (2013). [2] Bielefeld-BNL collaboration, to be published.
On behalf of collaboration: [Other]

Primary author

Dr Sayantan Sharma (Bielefeld University)

Presentation Materials