Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic radiation and collectivity in small quark-gluon droplets   We study the multiplicity and rapidity dependence of thermal and prompt
photon production in p+Pb collisions at 5.02 TeV, using a (3+1)D viscous
hydrodynamic framework. Direct photon anisotropic flow coefficients
$v^\gamma_{2,3}$ and nuclear modification factor $R^\gamma_\mathrm{pPb}(p_T)$
are presented in both the p-going (backward) and the Pb-going (forward)
directions. The interplay between initial state cold nuclear effect and final
state thermal enhancement at different rapidity regions is discussed. The
proposed rapidity dependent thermal photon enhancement and direct photon
anisotropic flow observables can elucidate non-trivial longitudinal dynamics of
hot quark-gluon plasma droplets created in small collision systems.

25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph