Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the low-mass Drell-Yan differential cross section at
  $\sqrt{s}$ = 7 TeV using the ATLAS detector   The differential cross section for the process $Z/\gamma^*\rightarrow ll$
($l=e,\mu$) as a function of dilepton invariant mass is measured in pp
collisions at $\sqrt{s}=$ 7 TeV at the LHC using the ATLAS detector. The
measurement is performed in the $e$ and $\mu$ channels for invariant masses
between 26 GeV and 66 GeV using an integrated luminosity of 1.6 fb$^{-1}$
collected in 2011 and these measurements are combined. The analysis is extended
to invariant masses as low as 12 GeV in the muon channel using 35 pb$^{-1}$ of
data collected in 2010. The cross sections are determined within fiducial
acceptance regions and corrections to extrapolate the measurements to the full
kinematic range are provided. Next-to-next-to-leading-order QCD predictions
provide a significantly better description of the results than
next-to-leading-order QCD calculations, unless the latter are matched to a
parton shower calculation.

31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th