Journal
PHYSICS LETTERS B
Volume 673, Issue 2, Pages 142-145Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2009.02.014
Keywords
-
Funding
- Alliance Program of the Helmholtz-Gerneinschaft
Ask authors/readers for more resources
We present, using the statistical model, a new analysis of hadron production in central collisions of heavy nuclei. This Study is motivated by the availability of final measurements both for the SPS (beam energies 20-160 A GeV) and for the RHIC energies (root s(NN) = 130 and 200 GeV) and by updates in the hadron mass spectrum, which is a crucial input for statistical models. Extending previous Studies by inclusion of very high-mass resonances (m > 2 GeV), and the up-to-now neglected scalar sigma meson leads to ail improved description of the data. In particular, the hitherto poorly reproduced energy dependence of the K+/pi(+) ratio at SPS energies (the horn) is now well described through the connection to the hadronic mass spectrum and, implicitly, Hagedorn's limiting temperature. We thereby demonstrate the intimate connection between the horn and the QCD phase transition. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available