Further evidence for the ${\Sigma }^{\ast }$ resonance with $J^P=1/2^{-}$ around 1380 MeV

Abstract

The unquenched quark models predict the new particle ${\Sigma }^{\ast }$ with spin parity $J^P=1/2^{-}$ and its mass is around the well established ${\Sigma }^{\ast }(1385)$ with $J^P=3/2^{+}$. Here by using the effective Lagrangian approach we study \kp\ reaction at the range of ${\Lambda }^{\ast }(1520)$ peak, comparing the resulting total cross section, and ${\pi }^{+}{\pi }^{-}$, $\Lambda {\pi }^{+}$, $\Lambda {\pi }^{-}$ invariant squared mass distributions for various incident $K^{-}$ momenta, as well as the production angular distribution of the $\Lambda$ with the data from the Lawrence Berkeley Laboratory 25-inch hydrogen bubble chamber, we find that, apart from the existing resonance ${\Sigma }^{\ast }(1385)$ with $J^P=3/2^{+}$, there is a strong evidence for the existence of the new resonance ${\Sigma }^{\ast }$ with $J^P=1/2^{-}$ around 1380 MeV. Higher statistic data on relevant reactions are needed to clarify the situation.

15 pages, 40 figures

References in corpus (5)

• Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons
• Unitary coupled channel analysis of the $\Lambda (1520)$ resonance
• 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
• Theoretical study on pp --> p n pi+ reaction at medium energies

Cited by in corpus (37)

• Measurement of the Sigma pi photoproduction line shapes near the Lambda(1405)
• On the isospin 0 and 1 resonances from $\pi \Sigma$ photoproduction data
• Antikaon-nucleon interaction and Lambda(1405) in chiral SU(3) dynamics
• Coupling vector and pseudoscalar mesons to study baryon resonances
• Possible $\Sigma ({\frac{1}{2}}^{-})$ under the ${\Sigma }^{\ast }(1385)$ peak in $K{\Sigma }^{\ast }$ photoproduction
• Five-quark components in baryons
• Cross-channel constraints on resonant antikaon-nucleon scattering
• How to reveal the nature of three or more pentaquark states?
• ${\Sigma }_{1/2^{-}}^{\ast }(1380)$ in the ${\Lambda }_c^{+}\to \eta {\pi }^{+}\Lambda$ decay
• Hyperon resonances coupled to pseudoscalar- and vector-baryon channels
• Hadron spectroscopy from strangeness to charm and beauty
• Review of the low-lying excited baryons ${\Sigma }^{\ast }(1/2^{-})$
• Antineutrino induced Lambda(1405) production off the proton
• Evidence of the low-lying baryon ${\Sigma }^{\ast }(1/2^{-})$ in the process ${\Lambda }_c^{+}\to \eta {\pi }^{+}\Lambda$
• Role of the possible ${\Sigma }^{\ast }({\frac{1}{2}}^{-})$ state in the $\Lambda p\to \Lambda p{\pi }^0$ reaction
• $\Sigma$ Resonances from $K^{-}N\to \pi \Lambda$ reactions with the center of mass energy from 1550 to 1676 MeV
• Roles of $a_0(980)$, $\Lambda (1670)$, and $\Sigma (1385)$ in the ${\Lambda }_c^{+}\to \eta \Lambda {\pi }^{+}$ decay
• Theoretical study of $N(1535)$ and ${\Sigma }^{\ast }(1/2^{-})$ in the Cabibbo-favored process ${\Lambda }_c^{+}\to p{\bar{K}}^0\eta$
• Role of the $N^{\ast }(1535)$ in the ${\Lambda }_c^{+}\to {\bar{K}}^0\eta p$ decay
• Analysis of the new Crystal Ball data on $K^{-}p\to {\pi }^0\Lambda$ reaction with beam momenta of $514\sim 750$ MeV/$c$
• ${\chi }_{c0}(1P)$ decay into $\bar{\Sigma }\Sigma \pi$ in search of an $I=1$, $1/2^{-}$ baryon state around $\bar{K}N$ threshold
• Photoproduction of ${\Lambda }^{\ast }$ and ${\Sigma }^{\ast }$ resonances with $J^P=1/2^{-}$ off the proton
• Role of the ${\Delta }^{\ast }(1940)$ in the ${\pi }^{+}p\to K^{+}{\Sigma }^{+}(1385)$ and $pp\to n{K}^{+}{\Sigma }^{+}(1385)$ reactions
• $\Lambda (1405)$ production in the process ${\chi }_{c0}(1P)\to \bar{\Lambda }\Sigma \pi$
• Possible ${\Sigma }^{\ast }(1/2^{-})$ in the initial-state polarized $\gamma N\to K^{+}{\Sigma }^{\ast }(1385)\to K^{+}\pi \Lambda$ reaction near threshold
• Decay properties of $N^{\ast }(1895)$
• Observation of ${\Lambda }_c^{+}\to \Lambda a_0(980{)}^{+}$ and Evidence for $\Sigma (1380{)}^{+}$ in ${\Lambda }_c^{+}\to \Lambda {\pi }^{+}\eta$
• Photo-production of lowest ${\Sigma }_{1/2^{-}}^{\ast }$ state within the Regge-effective Lagrangian approach
• The role of triangle singularity in isospin breaking process $J/\psi \to \Lambda \bar{\Lambda }\pi$ and the possible evidence of ${\Sigma }^{\ast }({\frac{1}{2}}^{-})$ states
• Analysis of ${\Sigma }^{\ast }$ via isospin selective reaction $K_{L}p\to {\pi }^{+}{\Sigma }^0$
• Role of ${\Sigma }^{\ast }(1/2^{-})$ baryons in ${\Lambda }_c\to \Lambda {\pi }^{+}{\pi }^{+}{\pi }^{-}$ decay
• Exotic properties of N^*(1895) and its impact on photoproduction of light hyperons
• Search for the low-lying excited baryon ${\Sigma }^{\ast }(1/2^{-})$ through process ${\Lambda }_c^{+}\to \Lambda K^0{\pi }^{+}$
• Vector- and Pseudoscalar-baryon coupled channel systems
• Penta-quark states with hidden charm and beauty
• Penta-quark States with Strangeness, Hidden Charm and Beauty
• Role of the $\Lambda (1600)$ in the $K^{-}p\to \Lambda {\pi }^0{\pi }^0$ reaction