An update on the Kappa

Abstract

New Focus data on Dplus -> Kminus piplus piminus are fitted to the kappa, together with earlier data from LASS, E791 and BES 2. There is a clear low mass K-pi peak due to the kappa pole. Inclusion of the I=3/2 K-pi amplitude gives only a marginal improvement to the fit and almost no change to the kappa peak. An improved formula for the kappa gives a better fit than that used earlier. The kappa pole moves to 663 +- 8(stat) +- 34(syst) -i[329 +- 5(stat) +- 22(syst)] MeV. The K0(1430) pole is at 1427 +- 4(stat) +- 13(stat) -i[135 +- 5(stat) +- 20(syst)] MeV.

11 pages figures, 2 tables

References in corpus (7)

• A low-lying scalar meson nonet in a unitarized meson model
• The K^*_0(800) scalar resonance from Roy-Steiner representations of pi K scattering
• The nature of $\sigma$, $\kappa$, $a_0(980)$ and $f_0(980)$
• How Resonances can synchronise with Thresholds
• Re-analysis of data on a0(1450) and a0(980)
• The $K^{-}{\pi }^{+}$ S-wave from the $D^{+}\to K^{-}{\pi }^{+}{\pi }^{+}$ decay
• Reconclining phi radiative decays with other data for a0(980), fo(980), pi-pi -> KK and pi-pi -> eta-eta

Cited by in corpus (23)

• Lattice study of light scalar tetraquarks with I=0,2,1/2,3/2: are sigma and kappa tetraquarks?
• A Review on Partial-wave Dynamics with Chiral Effective Field Theory and Dispersion Relation
• The pion-kaon scattering amplitude constrained with forward dispersion relations up to 1.6 GeV
• Strange resonance poles from $K\pi$ scattering below 1.8 GeV
• Padé Approximants and Resonance Poles
• Contributions of $K_0^{\ast }(1430)$ and $K_0^{\ast }(1950)$ in the three-body decays $B\to K\pi h$
• $I=1/2$ $S$-wave and $P$-wave $K\pi$ scattering and the $\kappa$ and $K^{\ast }$ resonances from lattice QCD
• On the scalar $\pi K$ form factor beyond the elastic region
• Strange Hadron Spectroscopy with Secondary KL Beam in Hall D
• The preliminary lattice QCD calculation of $\kappa$ meson decay width
• Low-lying Scalars in an extended Linear $\sigma$ Model
• Relative phases in Dalitz plot amplitudes for $D^0\to K_S{\pi }^{+}{\pi }^{-}$ and $D^0\to {\pi }^0{K}^{+}{K}^{-}$
• The pure annihilation type decays $B^0\to D_s^{-}{K}_2^{\ast +}$ and $B_s\to \bar{D}{a}_2$ in perturbative QCD approach
• Pure annihilation type $D\to PP(V)$ decays in the perturbative QCD approach
• Studying $\kappa$ meson with a MILC fine lattice
• Spectroscopy of light tetraquark states
• A helpful analogy between the covalent bond and Particle Spectroscopy
• Study of conventional and non-conventional scalar and vector mesons
• I=1/2 low-lying mesons in lattice QCD
• An interesting feature of BESIII data for J/Psi -> gamma-(etaprime-pi-pi)
• Dynamical generation of hadronic resonances in effective models with derivative interactions
• On the scalar $\pi K$ form factor beyond the elastic region
• Contributions of the subprocess $K_0^{\ast }(1430)\to K{\eta }^{\prime }$ in the charmless three-body $B$ meson decays