Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Updated determination of $N^*$ resonance parameters using a unitary,
  multichannel formalism   Results are presented for an updated multichannel energy-dependent
partial-wave analysis of $\pi N$ scattering. Our earlier work incorporated
single-energy amplitudes for $\pi N \rightarrow \pi N$, $\gamma N \rightarrow
\pi N$, $\pi N \rightarrow \pi\pi N$, $\pi N \rightarrow \eta N$, and $\pi N
\rightarrow K \Lambda$. The present work incorporates new single-energy
solutions for $\gamma p \rightarrow \eta p$ up to a c.m.\ energy of 1990~MeV,
$\gamma p \rightarrow K^+ \Lambda$ up to a c.m.\ energy of 2230~MeV, and
$\gamma n \rightarrow \eta n$ up to a c.m.\ energy of 1885~MeV, as well as
updated single-energy solutions for $\pi N \rightarrow \eta N$, $\pi N
\rightarrow K \Lambda$, and $\gamma N \rightarrow \pi N$. In this paper, we
present and discuss the resonance parameters obtained from a combined fit of
all these single-energy amplitudes. Our determined energy-dependent amplitudes
provide an excellent description of the corresponding measured observables.

3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: math
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas