Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of High-Q^2 Charged-Current e^+p Deep Inelastic Scattering
  Cross Sections at HERA   The e^+p charged-current deep inelastic scattering cross sections,
$d\sigma/dQ^2$ for Q^2 between 200 and 60000 GeV^2, and $d\sigma/dx$ and
$d\sigma/dy$ for Q^2 > 200 GeV^2, have been measured with the ZEUS detector at
HERA. A data sample of 47.7 pb^-1, collected at a center-of-mass energy of 300
GeV, has been used. The cross section $d\sigma/dQ^2$ falls by a factor of about
50000 as Q^2 increases from 280 to 30000 GeV^2. The double differential cross
section $d^2\sigma/dxdQ^2$ has also been measured. A comparison between the
data and Standard Model (SM) predictions shows that contributions from
antiquarks ($\bar{u}$ and $\bar{c}$) and quarks (d and s) are both required by
the data. The predictions of the SM give a good description of the full body of
the data presented here. A comparison of the charged-current cross section
$d\sigma/dQ^2$ with the recent ZEUS results for neutral-current scattering
shows that the weak and electromagnetic forces have similar strengths for Q^2
above $M^2_W, M^2_Z$. A fit to the data for $d\sigma/dQ^2$ with the Fermi
constant $G_F$ and $M_W$ as free parameters yields $G_F = (1.171 \pm 0.034
(stat.) ^{+0.026}_{-0.032} (syst.) ^{+0.016}_{-0.015} (PDF)) \times 10^{-5}
GeV^{-2}$ and $M_W = 80.8 ^{+4.9}_{-4.5} (stat.) ^{+5.0}_{-4.3} (syst.)
^{+1.4}_{-1.3} (PDF) GeV$. Results for $M_W$, where the propagator effect alone
or the SM constraint between $G_F$ and $M_W$ have been considered, are also
presented.

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The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
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The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: stat
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ