Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Excitation functions of hadronic observables from SIS to RHIC energies   We calculate excitation functions for various dynamical quantities as well as
experimental observables from SIS to RHIC energies within the HSD transport
approach which is based on string, quark, diquark ($q, \bar{q}, qq,
\bar{q}\bar{q}$) and hadronic degrees of freedom without including any explicit
phase transition to a quark-gluon plasma (QGP). It is argued that the failure
of this more 'conventional' approach in comparison to experimental data should
indicate the presence of a different phase which might be either attributed to
space-time regions of vanishing scalar quark condensate ($<q\bar{q}>$ = 0) or
to the presence of a QGP phase with strongly interacting partons. We study the
$K/\pi$ ratio, the low mass dilepton enhancement in the invariant mass regime
from 0.2 -- 1.2 GeV as well as charmonium suppression for central Au + Au
collisions as a function of the bombarding energy and present predictions for
these observables as well as hadron rapiditiy distributions at RHIC energies.
Whereas all observables studied within HSD show smooth increasing/decreasing
excitation functions, the experimental $K^+/\pi^+$ ratio indicates a maximum at
11 A$\cdot$GeV (or above) which is interpreted as a signature for a chirally
restored phase in the course of the reaction.

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The categories of this paper are: ao-sci
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The categories of this paper are: hep-lat
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The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
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The categories of this paper are: stat
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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: econ
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
3
The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph