Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct photon production as a probe of quarks chromoelectric and
  chromomagnetic dipole moments at the LHC   In this paper we show that the $\gamma+$jet invariant mass distribution in
proton-proton collisions at the LHC is significantly sensitive to the quarks
chromoelectric ($\kappa$) and chromomagnetic ($\tilde{\kappa}$) dipole moments.
It is shown that the presence of $\kappa$ or $\tilde{\kappa}$ leads to an
increment of the cross section of $\gamma+$jet process in particular in the
tail of $\gamma+$jet invariant mass distribution. Using the measured
$\gamma+$jet invariant mass distribution by the CMS experiment at the
center-of-mass energy of 8 TeV, we derive bounds on the quarks chromoelectric
and chromomagnetic dipole moments. In extraction of the limits, we consider
both theoretical and systematic uncertainties. The uncertainties originating
from variation of the renomalization/factorization scales and the choice of
proton parton distribution functions are taken into account as a function of
the $\gamma+$jet invariant mass. We exclude $\kappa$ or $\tilde{\kappa}$ above
$10^{-5}$ at 95$\%$ confidence level. This is the most stringent direct upper
limit on $\kappa$ or $\tilde{\kappa}$.

12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn