Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $Z^0$ Boson Associated b-jet Production in High-Energy Nuclear
  Collisions   The production of vector boson tagged heavy quark jets provides potentially
new tools to study jet quenching, especially the mass hierarchy of parton
energy loss. In this work, we present the first theoretical study on
$Z^0\,+\,$b-jet in heavy-ion collisions. Firstly utilizing a Monte Carlo
transport model, our simulations give nice descriptions of the azimuthal angle
correlation $\Delta\phi_{jZ}$, transverse momentum imbalance $x_{jZ}$ for
$Z^0\,+\,$jet as well as the nuclear modification factor $R_{AA}$ of inclusive
b-jet in Pb+Pb collisions. Then we calculate the azimuthal angular correlation
$\Delta\phi_{bZ}$ of $Z^0\,+\,$b-jet and $\Delta\phi_{bb}$ of
$Z^0\,+\,2\,$b-jets in central Pb+Pb collisions at $\sqrt{s_{NN}}=$~5.02 TeV.
We find that the medium modification of the azimuthal angular correlation for
$Z^0\,+\,$b-jet has a weaker dependence on $\Delta\phi_{bZ}$, as compared to
that for $Z^0\,+\,$jet. With the high purity of quark jet in $Z^0\,+\,$(b-)jet
production, we calculate the momentum imbalance distribution of $x_{bZ}$ of
$Z^0\,+\,$b-jet in Pb+Pb collisions. We observe a smaller shifting of the mean
value of momentum imbalance for $Z^0\,+\,$b-jet in Pb+Pb collisions
$\Delta\left\langle x_{bZ} \right\rangle$, as compared to that for
$Z^0\,+\,$jet. In addition, we investigate the nuclear modification factors of
tagged jet cross sections $I_{AA}$, and show a much stronger suppression of
$I_{AA}$ in $Z^0\,+\,$jet than that of $Z^0\,+\,$b-jet in central Pb+Pb
collisions.

11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
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The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg