Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Axial anomaly and the delta_{LT} puzzle   The axial anomaly contribution to generalized longitudinal-transverse
polarizability $\delta_{LT}^{}$ is calculated within Regge approach. It is
shown that the contribution from the exchange of the $a_1^{}(1260)$ Regge
trajectory is nontrivial and might have the key role to explain the large
difference between the predictions of chiral perturbation theory and the
experimental data for the neutron $\delta_{LT}^{}$. We also present the
prediction for the proton $\delta_{LT}^{}$, which will be measured at the
Thomas Jefferson National Accelerator Facility in near future.

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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
5
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: q-alg
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The categories of this paper are: math
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-lat