Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: N Delta - Transition Form Factors at Low Momentum Transfer   The three complex form factors entering the $\Delta\to N\gamma^\ast$ vertex
are calculated to ${\cal O}(\epsilon^3)$ in the framework of a chiral effective
theory with explicit $\Delta$(1232) degrees of freedom. Furthermore, the role
of presently unknown low energy constants that affect the values of EMR and CMR
is elucidated.

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The categories of this paper are: gr-qc
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The categories of this paper are: nucl-th
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: cs
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex