Light baryon resonances from a coupled-channel study including $$\mathbf {K\Sigma }$$ photoproduction
Abstract The Jülich-Bonn dynamical coupled-channel approach is extended to include $$K\Sigma $$ K Σ photoproduction off the proton. Differential cross section and (double) polarization data for $$K^+\Sigma ^0$$ K + Σ 0 and $$K^0\Sigma ^+$$ K 0 Σ + are analysed simultaneously with the pion- and photo...
Saved in:
Published in | The European physical journal. A, Hadrons and nuclei Vol. 58; no. 11 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
Springer Nature
27.11.2022
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Abstract
The Jülich-Bonn dynamical coupled-channel approach is extended to include
$$K\Sigma $$
K
Σ
photoproduction off the proton. Differential cross section and (double) polarization data for
$$K^+\Sigma ^0$$
K
+
Σ
0
and
$$K^0\Sigma ^+$$
K
0
Σ
+
are analysed simultaneously with the pion- and photon-induced production of
$$\pi N$$
π
N
,
$$\eta N$$
η
N
,
$$K\Lambda $$
K
Λ
, and
$$K\Sigma $$
K
Σ
final states, totaling almost 72,000 data points for center-of-mass energies
$$W<2.4$$
W
<
2.4
GeV. Based on the fit results the spectrum of
$$N^*$$
N
∗
and
$$\Delta $$
Δ
resonances is extracted in terms of pole positions and residues. We discuss the impact of the
$$\gamma p\rightarrow K\Sigma $$
γ
p
→
K
Σ
channels in detail and investigate the influence of recent polarization data for
$$\eta p$$
η
p
photoproduction. |
---|---|
Bibliography: | JLAB-THY-22-3667; DOE/OR/23177-5548 German Research Foundation (DFG) VolkswagenStiftung National Science Foundation (NSF) USDOE Office of Science (SC), Nuclear Physics (NP) National Natural Science Foundation of China (NSFC) AC05-06OR23177; SC0016582; 11621131001; TRR110; 93562; PHY 2012289; 2018DM0034 CAS President’s International Fellowship Initiative (PIFI) |
ISSN: | 1434-601X 1434-601X |
DOI: | 10.1140/epja/s10050-022-00852-1 |