Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proton polarisabilities from Compton data using Covariant Chiral EFT   We present a fit of the spin-independent electromagnetic polarisabilities of
the proton to low-energy Compton scattering data in the framework of covariant
baryon chiral effective field theory. Using the Baldin sum rule to constrain
their sum, we obtain
$\alpha=[10.6\pm0.25$(stat)$\pm0.2$(Baldin)$\pm0.4$(theory)$]\times10^{-4}$fm$^3$
and $\beta
=[3.2\mp0.25$(stat)$\pm0.2$(Baldin)$\mp0.4$(theory)$]\times10^{-4}$fm$^3$, in
excellent agreement with other chiral extractions of the same quantities.

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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
1
The categories of this paper are: cs
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: cond-mat