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${{\mathit K}^{*}{(892)}}$ T-Matrix Pole $\sqrt {s }$

INSPIRE   PDGID:

M018TMP

VALUE (MeV) DOCUMENT ID TECN  COMMENT $\bf{ (890 \pm14) − {\mit i} (26 \pm6)}$ OUR ESTIMATE • • We do not use the following data for averages, fits, limits, etc. • • $(890 \pm2)− {\mit i} (25.6 \pm1.2)$ 1 PELAEZ 2020 RVUE ${{\mathit \pi}}$ ${{\mathit K}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit K}}$ $(892 \pm1)− {\mit i} (29 \pm1)$ 2 PELAEZ 2017 RVUE ${{\mathit \pi}}$ ${{\mathit K}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit K}}$ $(889 \pm13) − {\mit i} (24 \pm4)$ 3 PELAEZ 2004 A RVUE ${{\mathit \pi}}$ ${{\mathit K}}$ $\rightarrow$ ${{\mathit \pi}}{{\mathit K}}$ 1  Extracted employing ${{\mathit \pi}}{{\mathit K}}$ partial wave analysis from ESTABROOKS 1978 and ASTON 1988 , Roy-Steiner equations and once subtracted forward dispersion relations. 2  Reanalysis of ESTABROOKS 1978 and ASTON 1988 satisfying Forward Dispersion Relations and using sequences of Pade approximants. 3  Reanalysis of data from ESTABROOKS 1978 and ASTON 1988 in the unitarized ChPT model.

References:

PELAEZ 2020 PRL 124 172001 Determination of the lightest strange resonance $K_0^*(700)$ or $\kappa$, from a dispersive data analysis PELAEZ 2017 EPJ C77 91 Strange Resonance Poles from ${{\mathit K}}{{\mathit \pi}}$ Scattering below 1.8 GeV PELAEZ 2004A MPL A19 2879 Light Scalars as Tetraquarks or Two-meson States from Large ${{\mathit N}_{{c}}}$ and Unitarized Chiral Perturbation Theory