Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Taming the Pion Cloud of the Nucleon   We present a light-front determination of the pionic contribution to the
nucleon self-energy, $\Sigma_\pi$, to second-order in pion-baryon coupling
constants that allows the pion-nucleon vertex function to be treated in a
model-independent manner constrained by experiment. The pion mass $\mu$
dependence of $\Sigma_\pi$ is consistent with chiral perturbation theory
results for small values of $\mu$ and is also linearly dependent on $\mu$ for
larger values, in accord with the results of lattice QCD calculations. The
derivative of $\Sigma_\pi$ with respect to $\mu^2$ yields the dominant
contribution to the pion content, which is consistent with the
$\bar{d}-\bar{u}$ difference observed experimentally in the violation of the
Gottfried sum rule.

20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg