Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of J/$\psi$ meson production inside jets in pp collisions at
  $\sqrt{s} =$ 8 TeV   A study of the production of prompt J/$\psi$ mesons contained in jets in
proton-proton collisions at $\sqrt{s} =$ 8 TeV is presented. The analysis is
based on data corresponding to an integrated luminosity of 19.1 fb$^{-1}$
collected with the CMS detector at the LHC. For events with at least one
observed jet, the angular separation between the J/$\psi$ meson and the jet is
used to test whether the J/$\psi$ meson is part of the jet. The analysis shows
that most prompt J/$\psi$ mesons with energy above 15 GeV and rapidity $|y|<$ 1
are contained in jets with pseudorapidity $|\eta_{\text{jet}}|$ $<$ 1. The
differential distributions of the probability to have a J/$\psi$ meson
contained in a jet as a function of jet energy for a fixed J/$\psi$ energy
fraction are compared to a theoretical model using the fragmenting jet function
approach. The data agree best with fragmenting jet function calculations that
use a long-distance matrix element parameter set in which prompt J/$\psi$
mesons are predicted to be unpolarized. This technique demonstrates a new way
to test predictions for prompt J/$\psi$ production using nonrelativistic
quantum chromodynamics.

23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
18
The categories of this paper are: econ