Analysis of the new Crystal Ball data on $K^{-}p\to {\pi }^0\Lambda$ reaction with beam momenta of $514\sim 750$ MeV/$c$

Abstract

The Crystal Ball Collaboration has recently reported the differential cross sections and $\Lambda$ polarization for the reaction $K^{-}p\to {\pi }^0\Lambda$ using an incident $K^{-}$ beam with momenta between 514 and 750 MeV/$c$. We make a partial wave analysis for this process with an effective Lagrangian approach and study the properties of some $\Sigma$ resonances around this energy range. With the inclusion of the 4-star resonances $\Sigma (1189)$, ${\Sigma }^{\ast }(1385)$, $\Sigma (1670){\frac{3}{2}}^{-}$, $\Sigma (1775){\frac{5}{2}}^{-}$, as well as a $\Sigma (1635){\frac{1}{2}}^{+}$, which is compatible with the 3-star $\Sigma (1660){\frac{1}{2}}^{+}$ in PDG, our results can well reproduce the experimental data. The parameters on the $\Sigma$ resonances and related couplings are studied.

Polarization data from the Crystal Ball Collaboration are included for the fit

References in corpus (9)

• Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons
• Evidence for a new ${\Sigma }^{\ast }$ resonance with $J^P=1/2^{-}$ in the old data of $K^{-}p\to \Lambda {\pi }^{+}{\pi }^{-}$ reaction
• On the nature of the lowest $1/2^{-}$ baryon nonet and decuplet
• Further evidence for the ${\Sigma }^{\ast }$ resonance with $J^P=1/2^{-}$ around 1380 MeV
• K* photoproduction off the nucleon: gamma N --> K* Lambda
• Possible $\Sigma ({\frac{1}{2}}^{-})$ under the ${\Sigma }^{\ast }(1385)$ peak in $K{\Sigma }^{\ast }$ photoproduction
• Vector meson-baryon strong coupling contants in light cone QCD sum rules
• Measurement of ${\pi }^0\Lambda$, ${\bar{K}}^{0}n$, and ${\pi }^0{\Sigma }^0$ production in $K^{-}p$ interactions for $p_{K^{-}}$ between 514 and 750 MeV/$c$
• Analysis of the vertices $\rho NN$, $\rho \Sigma \Sigma$ and $\rho \Xi \Xi$ with light-cone QCD sum rules

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• Strong decay modes $\bar{K}\Xi$ and $\bar{K}\Xi \pi$ of the $\Omega (2012)$ in the $\bar{K}\Xi (1530)$ and $\eta \Omega$ molecular scenario
• The internal structures of the nucleon resonances $N(1875)$ and $N(2120)$
• The $K^{-}p\to \eta \Lambda$ reaction in an effective Lagrangian model
• Review of the low-lying excited baryons ${\Sigma }^{\ast }(1/2^{-})$
• Production of the superheavy baryon ${\Lambda }_{c\bar{c}}^{\ast }(4209)$ in kaon-induced reaction
• $\Sigma$ Resonances from $K^{-}N\to \pi \Lambda$ reactions with the center of mass energy from 1550 to 1676 MeV
• Evidence for a narrow $D_{03}$ state in $K^{-}p\to \eta \Lambda$ near threshold
• Low energy reactions $K^{-}p\to {\Sigma }^0{\pi }^0$, $\Lambda {\pi }^0$, ${\bar{K}}^{0}n$ and the strangeness $S=-1$ hyperons
• Analysis of the Crystal Ball data on $K^{-}p\to {\pi }^0{\Sigma }^0$ reaction with center-of-mass energies of $1536\sim 1676$ MeV
• Observation of ${\Lambda }_c^{+}\to \Lambda a_0(980{)}^{+}$ and Evidence for $\Sigma (1380{)}^{+}$ in ${\Lambda }_c^{+}\to \Lambda {\pi }^{+}\eta$
• The near threshold ${\pi }^{-}p\to \eta n$ reaction in an effective Lagrangian approach
• The $\gamma p\to n{a}_2^{+}(1320)\to n{\rho }^0{\pi }^{+}$ reactions within an effective Lagrangian approach
• Analysis of ${\Sigma }^{\ast }$ via isospin selective reaction $K_{L}p\to {\pi }^{+}{\Sigma }^0$
• Radiative decays of the $\Omega (2012)$ as a hadronic molecule
• Penta-quark states with hidden charm and beauty