Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scale for the Phase Diagram of Quantum Chromodynamics   Matter described by Quantum Chromodynamics (QCD), the theory of strong
interactions, may undergo phase transitions when its temperature and the
chemical potentials are varied. QCD at finite temperature is studied in the
laboratory by colliding heavy-ions at varying beam energies. We present a test
of QCD in the non-perturbative domain through a comparison of thermodynamic
fluctuations predicted in lattice computations with the experimental data of
baryon number distributions in high-energy heavy-ion collisions. This study
provides evidence for thermalization in these collisions, and allows us to find
the crossover temperature between normal nuclear matter and a deconfined phase
called the quark gluon plasma. This value allows us to set a scale for the
phase diagram of QCD.

3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph