Magnetic moments of the Lambda(1405) and Lambda(1670) resonances

Abstract

By using techniques of unitarized chiral perturbation theory, where the $\Lambda (1405)$ and $\Lambda (1670)$ resonances are dynamically generated, we evaluate the magnetic moments of these resonances and their transition magnetic moment. The results obtained here differ appreciably from those obtained with existing quark models. The width for the $\Lambda (1670)\to \Lambda (1405)\gamma$ transition is also evaluated leading to a branching ratio of the order of $2\times 10^{-6}$.

19 pags., 8 figs

References in corpus (4)

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• Low lying S=-1 excited baryons and chiral symmetry
• The $S_{11}-N$(1535) and $-N$(1650) Resonances in Meson-Baryon Unitarized Coupled Channel Chiral Perturbation Theory
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Cited by in corpus (54)

• Chiral Dynamics of the Two Λ(1405) States
• $S=-1$ Meson-Baryon Unitarized Coupled Channel Chiral Perturbation Theory and the $S_{01}-$ $\Lambda$(1405) and $-\Lambda$(1670) Resonances
• Evidence for the two pole structure of the Lambda(1405) resonance
• Flavor SU(3) breaking effects in the chiral unitary model for meson-baryon scatterings
• Wave functions of composite hadron states and relationship to couplings of scattering amplitudes for general partial waves
• The s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry
• K anti-K N molecule state with I=1/2 and J^P=1/2^+ studied with three-body calculation
• Two-pole structures in QCD: Facts, not fantasy!
• $f_1(1285)$ decays into $a_0(980){\pi }^0$, $f_0(980){\pi }^0$ and isospin breaking
• anti-K anti-K N molecule state in three-body calculation
• $\Lambda (1405)$ production in the ${\pi }^{-}p\to K^0\pi \Sigma$ reaction
• Vector meson-Baryon dynamics and generation of resonances
• Strange mesons in nuclear matter at finite temperature
• Internal structure of resonant Lambda(1405) state in chiral dynamics
• Electromagnetic mean squared radii of Lambda(1405) in chiral dynamics
• Photoproduction of Xi off nucleons
• $K\Lambda (1405)$ configuration of the $K\bar{K}N$ system
• Cross-channel constraints on resonant antikaon-nucleon scattering
• The pole structure of the Lambda(1405) in a recent QCD simulation
• On the nature of the $\Lambda (1405)$ and $\Lambda (1670)$ from their $N_c$ behavior in chiral dynamics
• Magnetic moments of the low-lying {1/2}^- octet baryon resonances
• Pentaquark Theta^+(1540) production in gamma N --> K Anti-K N
• Theoretical study of the $KK\bar{K}$ system and dynamical generation of the K(1460) resonance
• Strategy to find the two $\Lambda (1405)$ states from lattice QCD simulations
• Hyperon resonances coupled to pseudoscalar- and vector-baryon channels
• Magnetic dipole moment of the S11(1535) from the γp \to γηp reaction
• Theoretical support for the $\pi (1300)$ and the recently claimed $f_0(1790)$ as molecular resonances
• Light-quark contributions to the magnetic form factor of the Lambda(1405)
• Photoproduction of $\Lambda (1405)$ with the $N^{\ast }$ and $t$-channel Regge contributions
• Helicity Amplitudes of the Lambda(1670) and two Lambda(1405) as dynamically generated resonances
• Negative parity $\Lambda$ and $\Sigma$ resonances coupled to pseudoscalar and vector mesons
• Why $\Xi (1690)$ and $\Xi (2120)$ are so narrow?
• Photoproduction of $K^{\ast }$ for the study of $\Lambda (1405)$
• Magnetic moments of the low-lying $J^P=1/2^{-}$, $3/2^{-}$ $\Lambda$ resonances within the framework of the chiral quark model
• Photoproduction of ${\Lambda }^{\ast }$ and ${\Sigma }^{\ast }$ resonances with $J^P=1/2^{-}$ off the proton
• The composite nature of the $\Lambda (1520)$ resonance
• Predicting the existence of a 2.9 GeV $D{f}_0(980)$ molecular state
• Magnetic moments of negative-parity baryons in QCD
• A study of the $KN$-$K^{\ast }N$ coupled systems
• Microscopic 8-quark study of the antikaon nucleon nucleon systems
• Structure of Lambda(1405) and chiral dynamics
• Is two-poles' $\Lambda (1405)$ one state or two?
• A pentaquark model for Lambda(1405)
• Photo- and electroproduction of $\Lambda (1405)$ via ${\gamma }^{(\ast )}p\to K^{+}{\pi }^{+}{\Sigma }^{-}$
• Investigation of $qqqs\bar{q}$ pentaquarks in a chiral quark model
• On Lowest Lying ${\frac{1}{2}}^{-}$ Octet Baryons
• Study of the resonance contributions in the ${\Xi }_b^{-}\to p{K}^{-}{K}^{-}$ decay
• Singlet baryons in the graded symmetry approach to partially quenched QCD
• Dynamical Generation of Hyperon Resonances
• Electric Mean Squared Radii of Lambda(1405) in Chiral Dynamics
• Quark-mass dependence of baryon resonances
• $\Lambda (1405)$ and $\bar{\Lambda }(1405)$ in $J/\psi$ four-body decays
• Resonances in chiral unitary approaches
• Vector- and Pseudoscalar-baryon coupled channel systems