Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fate of the $\eta'$ in the Quark Gluon Plasma   In this paper we study the $\eta'$ in $N_f=2+1+1$ lattice QCD simulations at
finite temperature. Results are obtained from the analysis of the gluonic
defined topological charge density correlator after gradient flow. Our results
indicate the growth of the $\eta'$ mass above the pseudocritical temperature,
associated with the chiral symmetry restoration. In the vicinity of the
pseudocritical temperature the results are consistent with a small dip in the
$\eta'$ mass. The magnitude of the dip is compatible with the reduction of the
$\eta'$ mass obtained by experimental analysis and suggests that $\eta'$ mass
comes close to zero temperature non-anomalous contribution.

24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th