Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the electron charge asymmetry in inclusive W production
  in pp collisions at sqrt(s) = 7 TeV   A measurement of the electron charge asymmetry in inclusive pp to W + X to e
nu + X production at sqrt(s) = 7 TeV is presented based on data recorded by the
CMS detector at the LHC and corresponding to an integrated luminosity of 840
inverse picobarns. The electron charge asymmetry reflects the unequal
production of positive and negative W bosons in pp collisions. The electron
charge asymmetry is measured in bins of absolute value of electron
pseudorapidity in the range of abs(eta) < 2.4. The asymmetry rises from about
0.1 to 0.2 as a function of the pseudorapidity and is measured with a relative
precision better than 7%. This measurement provides new stringent constraints
for parton distribution functions.

14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph