Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Studies on the $K^*\Sigma$ bound-state via $K^+p\to K^+\phi\,p$   In the present work, we investigate the hidden-strangeness production process
in the $S=+1$ channel via $K^+p\to K^+\phi\,p$, focussing on the exotic
\textit{pentaquark} molecular $K^*\Sigma$ bound state, assigned by
$P^+_s(2071,3/2^-)$. For this purpose, we employ the effective Lagrangian
approach in the tree-level Born approximation. Using the experimental and
theoretical inputs for the exotic state and for the ground-state hadron
interactions, the numerical results show a small but obvious peak structure
from $P^+_s$ with the signal-to-background ratio $\approx1.7\,\%$, and it is
enhanced in the backward-scattering region of the outgoing $K^+$ in the
center-of-mass frame. We also find that the contribution from the
$K^*(1680,1^-)$ meson plays an important role to reproduce the data. The
proton-spin polarizations are taken into account to find a way to reduce the
background. The effects of the possible $27$-plet pentaquark $\Theta^{++}_{27}$
is discussed as well.

10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin