Radiative decays of the $\Omega (2012)$ as a hadronic molecule

Abstract

We present a theoretical investigation of the radiative decay process $\Omega (2012)\to \gamma \Omega$, where the $\Omega (2012)$ resonance with spin-parity $J^P={\frac{3}{2}}^{-}$, is treated as a dynamically generated state from $\bar{K}\Xi (1530)$ and $\eta \Omega$ in $s$-wave and $\bar{K}\Xi$ in $d$-wave. The radiative decay width of the $\Omega (2012)$ is calculated using a triangular loop mechanism, where the $\Omega (2012)$ couples to the $\bar{K}\Xi (1530)$ channel. Subsequently, the final state interactions between $\Xi (1530)$ and $\bar{K}$ transition to a photon and $\Omega$ through the exchange of a $\Xi$ baryon. Our calculations yield a radiative decay width of $13.2_{-3.9}^{+4.5}$ KeV, with uncertainties arising from the model parameters. This result provides valuable insights into the nature of the $\Omega (2012)$ resonance and its decay dynamics. It is expected that the calculations presented here could be verified by future experiments, which would open a new door for studying the still elusive nature of the $\Omega (2012)$.

References in corpus (48)

• Non perturbative chiral approach to s-wave \bar{K}N interactions
• Coupled-channel dynamics in the reactions piN --> piN, etaN, KLambda, KSigma
• On baryon resonances and chiral symmetry
• The light baryon spectrum in a relativistic quark model with instanton-induced quark forces II. The strange baryon spectrum
• Baryonic Resonances from Baryon Decuplet-Meson Octet Interaction
• QCD with Two Light Dynamical Chirally Improved Quarks: Baryons
• Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons
• Covariant L-S Scheme for the effective N*NM couplings
• Strangeness -2 and -3 Baryons in a Constituent Quark Model
• Strange baryon spectroscopy in the relativistic quark model
• Decay behaviors of Pc hadronic molecules
• Observation of an excited ${\Omega }^{-}$ baryon
• $\Omega$ baryon spectrum and their decays in a constituent quark model
• Photoproduction of Xi off nucleons
• The $\Omega (2012)$ as a hadronic molecule
• Coupled channels dynamics in the generation of the $\Omega (2012)$ resonance
• Hadronic molecular assignment for the newly observed ${\Omega }^{\ast }$ state
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• Scattering of decuplet baryons in chiral effective field theory
• Search for $\Omega (2012)\to K\Xi (1530)\to K\pi \Xi$ at Belle
• 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
• Molecular picture for the $\Omega (2012)$ revisited
• Revisiting the $\Omega (2012)$ as a hadronic molecule and its strong decays
• Re-analysis of the $\Lambda (1520)$ photoproduction reaction
• $\Omega (2012)$ through the looking glass of flavour SU(3)
• Theoretical study of the $\Omega (2012)$ state in the ${\Omega }_c^0\to {\pi }^{+}\Omega (2012{)}^{-}\to {\pi }^{+}(\bar{K}\Xi {)}^{-}$ and ${\pi }^{+}(\bar{K}\Xi \pi {)}^{-}$ decays
• Low-lying $\Omega$ states with negative parity in an extended quark model with Nambu-Jona-Lasinio interaction
• Radiative decays of decuplet hyperons
• Spectroscopic Study of Strangeness=-3 ${\Omega }^{-}$ Baryon
• Toward discovering the excited $\Omega$ baryons through nonleptonic weak decays of ${\Omega }_c$
• Interpretation of the ${\Omega }_c\to {\pi }^{+}\Omega (2012)\to {\pi }^{+}(\bar{K}\Xi )$ relative to ${\Omega }_c\to {\pi }^{+}\bar{K}\Xi$ from the $\Omega (2012)$ molecular perspective
• Scalar Lambda N and Lambda Lambda interaction in a chiral unitary approach
• Analysis of the new Crystal Ball data on $K^{-}p\to {\pi }^0\Lambda$ reaction with beam momenta of $514\sim 750$ MeV/$c$
• Meson-baryon coupling constants of the SU(3) baryons with flavor SU(3) symmetry breaking
• Understanding the nature of $\Omega (2012)$ in a coupled-channel approach
• The ${\Xi }^{\ast }\bar{K}$ and $\Omega \eta$ interaction within a chiral unitary approach
• Reanalysis of the newly observed ${\Omega }^{\ast }$ state in hadronic molecule model
• Analysis of $\Omega (2012)$ as a molecule in the chiral quark model
• Observation of $\Omega (2012{)}^{-}\to \Xi (1530)\bar{K}$ and measurement of the effective couplings of $\Omega (2012{)}^{-}$ to $\Xi (1530)\bar{K}$ and $\Xi \bar{K}$
• Photoproduction $\gamma p\to K^{+}\Lambda (1520)$ in an effective Lagrangian approach
• Identifying triple-strangeness $\Omega$ hyperons in light of recent experimental results
• Evidence for Two Excited ${\Omega }^{-}$ Hyperons
• Structure of the ${\Omega }^{-}(2012)$ with Hamiltonian Effective Field Theory
• Analysis of the $\gamma n\to K^{+}{\Sigma }^{-}(1385)$ photoproduction
• Analysis of the differential cross section and photon beam asymmetry data for $\gamma p\to {\eta }^{\prime }p$
• Observation of the $\Omega$(2012) baryon at the LHC
• Strong decays of $a_0$, $f_0$, $f_2$, and $K_2^{\ast }$ resonances as dynamically generated states of two vector mesons
• Analysis of the data for $\gamma p\to f_1(1285)p$ photoproduction