Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dilepton Production in Transport-based Approaches   We investigate dilepton production in transport-based approaches and show
that the baryon couplings of the $\rho$ meson represent the most important
ingredient for understanding the measured dilepton spectra. At low energies (of
a few GeV), the baryon resonances naturally play a larger role and affect
already the vacuum spectra via Dalitz-like contributions, which can be captured
well in an on-shell-transport scheme. At higher energies, the baryons mostly
affect the in-medium self energy of the $\rho$, which is harder to tackle in
transport models and requires advanced techniques.

31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
2
The categories of this paper are: math