Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Meson and Isobar Degrees of Freedom in A($\vec{e},e'\vec{p}$) reactions
  at $0.2 \leq Q^2 \leq 0.8 (GeV/c)^2$   The effect of meson and isobar degrees of freedom in A($\vec{e},e'\vec{p}$)
and A(e,e'n) is studied for four-momentum transfers Q^2 in the range between
0.2 and 0.8 (GeV/c)^2. The calculations are performed in a non-relativistic
framework with explicit (N,\Delta,\pi) degrees-of-freedom. For the whole range
of momentum transfers under investigation the relative effect of the
meson-exchange and isobar degrees of freedom is significant. At low missing
momenta and quasi-elastic conditions, a tendency to reduce the (e,e'p) and
(e,e'n) differential cross sections is noticed. The greatest sensitivity is
found in the interference structure functions $W_{LT}$ and $W_{TT}$. The recoil
polarization observables, on the other hand, are moderately affected by the
meson-exchange and $\Delta$-isobar currents.

11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom