Clues for the existence of two $K_1(1270)$ resonances

Abstract

The axial vector meson $K_1(1270)$ was studied within the chiral unitary approach, where it was shown that it has a two-pole structure. We reanalyze the high-statistics WA3 experiment $K^{-}p\to K^{-}{\pi }^{+}{\pi }^{-}p$ at 63 GeV, which established the existence of both $K_1(1270)$ and $K_1(1400)$, and we show that it clearly favors our two-pole interpretation. We also reanalyze the traditional K-matrix interpretation of the WA3 data and find that the good fit of the data obtained there comes from large cancellations of terms of unclear physical interpretation.

published version in PRD; typos corrected; title changed to "Clues for the existence of two $K_1(1270)$ resonances"

References in corpus (1)

• Strange axial-vector mesons mixing angle

Cited by in corpus (43)

• Vector meson-vector meson interaction in a hidden gauge unitary approach
• The ρρinteraction in the hidden gauge formalism and the f_0(1370) and f_2(1270) resonances
• Axial Resonances in the Open and Hidden Charm Sectors
• Hidden gauge formalism for the radiative decays of axial-vector mesons
• Two-pole structures in QCD: Facts, not fantasy!
• $P_{cs}(4459)$ and other possible molecular states from ${\Xi }_c^{(\ast )}{\bar{D}}^{(\ast )}$ and ${\Xi }_c^{\prime }{\bar{D}}^{(\ast )}$ interactions
• Pseudocalar meson and vector meson interactions and dynamically generated axial-vector mesons
• Low-lying even parity meson resonances and spin-flavor symmetry
• The $Z_{cs}(3985)$ as a threshold effect from the ${\bar{D}}_s^{\ast }D+{\bar{D}}_s{D}^{\ast }$ interaction
• Cross-channel constraints on resonant antikaon-nucleon scattering
• Pole position of the $a_1(1260)$ resonance in a three-body unitary framework
• Revising the $f_1(1420)$ resonance
• Axial meson exchange and the $Z_c(3900)$ and $Z_{cs}(3985)$ resonances as heavy hadron molecules
• The radiative decay of the $\Lambda (1405)$ and its two-pole structure
• Three-body dynamics of the $a_1(1260)$ resonance from lattice QCD
• The role of the N*(1535) resonance and the pi^- p --> KY amplitudes in the OZI forbidden pi N --> phi N reaction
• Unveiling the $K_1(1270)$ double-pole structure in the $\bar{B}\to J/\psi \rho \bar{K}$ and $\bar{B}\to J/\psi {\bar{K}}^{\ast }\pi$ decays
• Theoretical study of the $D^0\to K^{-}{\pi }^{+}\eta$ reaction
• Quantum loops in radiative decays of the $a_1$ and $b_1$ axial-vector mesons
• Understanding the $K^{\ast }/K$ ratio in heavy ion collisions
• Prediction of possible $D{K}_1$ bound states
• Deciphering the light vector meson contribution to the cross sections of $e^{+}{e}^{-}$ annihilations into the open-strange channels through a combined analysis
• $Z_{cs}$ states from the $D_s^{\ast }{\bar{D}}^{\ast }$ and $J/\psi K^{\ast }$ coupled channels: Signal in $B^{+}\to J/\psi \varphi K^{+}$ decay
• Theoretical description of the $\mathbf{J}/\mathbf{\psi }\to \mathbf{\eta }({\mathbf{\eta }}^{\prime }){\mathbf{h}}_1(1380)$, $\mathbf{J}/\mathbf{\psi }\to \mathbf{\eta }({\mathbf{\eta }}^{\prime }){\mathbf{h}}_1(1170)$ and $\mathbf{J}/\mathbf{\psi }\to {\mathbf{\pi }}^0{\mathbf{b}}_1(1235{)}^0$ reactions
• Partial decay widths of $\varphi (2170)$ to kaonic resonances
• Radiative decay into $\gamma P$ of the low lying axial-vector mesons
• Unveiling the $a_0(1710)$ nature in the process $J/\psi \to {\bar{K}}^0{K}^{+}{\rho }^{-}$
• Chiral Unitary Dynamics of Hadrons and Hadrons in a Nuclear Medium
• The $\pi f_0(500)$ decay of the $a_1(1260)$
• Tau decay into ${\nu }_{\tau }$ and $a_1(1260)$, $b_1(1235)$, and two $K_1(1270)$
• Faddeev fixed center approximation to $\pi \bar{K}{K}^{\ast }$ system and the ${\pi }_1(1600)$
• Study of the axial-vector and tensor resonant contributions to the $D\to VP{\ell }^{+}{\nu }_{\ell }$ decays based on SU(3) flavor analysis
• Faddeev fixed-center approximation to the $\eta K^{\ast }{\bar{K}}^{\ast }$, $\pi K^{\ast }{\bar{K}}^{\ast }$ and $K{K}^{\ast }{\bar{K}}^{\ast }$ systems
• The role of meson interactions in the $D_s^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}\eta$ decay
• $D_1(2420)$ and its interactions with a kaon: open charm states with strangeness
• On the decay widths of radially excited scalar meson $K_0^{\ast }(1430)$ in view of new experimental data
• Strong decays of $a_0$, $f_0$, $f_2$, and $K_2^{\ast }$ resonances as dynamically generated states of two vector mesons
• Dynamically generated states from the $\eta K^{\ast }{\bar{K}}^{\ast }$, $\pi K^{\ast }{\bar{K}}^{\ast }$, and $K{K}^{\ast }{\bar{K}}^{\ast }$ systems within the fixed-center approximation
• $\tau$ lepton decays with production of strange scalar mesons $K_0^{\ast }(700)$ and $K_0^{\ast }(1430)$ in the extended NJL model
• I=1/2 low-lying mesons in lattice QCD
• Recent Developments in Chiral Unitary Dynamics of Resonances
• Finding a clean process $B^{-}\to K^{-}{D}^0{K}^0$ to probe absolutely exotic four-quark states
• The dynamically generated $h_1$ state by the $K^{\ast }{\bar{K}}^{\ast }$ interaction and its $K_1(1270)\bar{K}$ and $b_1(1235)\pi$ decays