Observation of the resonant character of the $Z(4430{)}^{-}$ state

Abstract

Resonant structures in $B^0\to {\psi }^{\prime }{\pi }^{-}{K}^{+}$ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using $pp$ collision data corresponding to $3f{\mathrm{b}}^{-1}$ collected with the LHCb detector. The data cannot be described with $K^{+}{\pi }^{-}$ resonances alone, which is confirmed with a model-independent approach. A highly significant $Z(4430{)}^{-}\to {\psi }^{\prime }{\pi }^{-}$ component is required, thus confirming the existence of this state. The observed evolution of the $Z(4430{)}^{-}$ amplitude with the ${\psi }^{\prime }{\pi }^{-}$ mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin-parity is determined unambiguously to be $1^{+}$.

10 pages, 4 figures

References in corpus (17)

• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• How Resonances can synchronise with Thresholds
• Amplitude analysis of e+e- => Y(nS)pi+pi- at sqrt(s)=10.865 GeV
• Search for tetraquark candidate Z(4430) in meson photoproduction
• Threshold effect and π^\pm ψ(2S) peak
• A Uniform Description of the States Recently Observed at B-factories
• Hidden-charm and radiative decays of the Z(4430) as a hadronic D_1 \bar{D^\ast} bound state
• Partners of Z(4430) and Productions in B Decays
• Line Shapes of the Z(4430)
• Bottomed Analog of Z+(4433)
• The Charged Z(4433): Towards a New Spectroscopy
• Photoproduction of Z(4430) through mesonic Regge trajectories exchange
• Is the Z^+(4430) a radially excited state of D_s?
• $Z^{+}(4430)$ as a resonance in the $D_1(D_1^{\prime })D^{\ast }$ channel
• Understanding the Charged Meson Z(4430)
• Microscopic calculation of the decay of Jaffe-Wilczek tetraquarks, and the Z(4433)
• A chiral quark model study of $Z^{+}(4430)$ in the molecular picture

Cited by in corpus (125)

• Multiquark Resonances
• Exotics: Heavy Pentaquarks and Tetraquarks
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Observation of an exotic narrow doubly charmed tetraquark
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Study of the doubly charmed tetraquark $T_{cc}^{+}$
• Threshold cusps and triangle singularities in hadronic reactions
• The Z(4430) and a New Paradigm for Spin Interactions in Tetraquarks
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Four-Quark Hadrons: an Updated Review
• 50 Years of Quantum Chromodynamics
• Observation of new resonances decaying to $J/\psi K^{+}$ and $J/\psi \varphi$
• Observation of a new charged charmoniumlike state in B -> J/psi K pi decays
• A New Picture for the Formation and Decay of the Exotic $XYZ$ Mesons
• $Z_b$ and $Z_c$ Exotic States as Coupled Channel Cusps
• Measurement of lepton universality parameters in $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ and $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ decays
• A New Hadron Spectroscopy
• Study of the $Z_c^{+}$ channel using lattice QCD
• Analysis of the doubly-charmed tetraquark molecular states with the QCD sum rules
• A study of $cc\bar{c}\bar{c}$ tetraquark decays in 4 muons and in $D^{(\ast )}{\bar{D}}^{(\ast )}$ at LHC
• Including heavy spin effects in the prediction of a $\bar{b}\bar{b}ud$ tetraquark with lattice QCD potentials
• Implications of Heavy Quark-Diquark Symmetry for Excited Doubly Heavy Baryons and Tetraquarks
• Masses of doubly heavy tetraquarks $T_{Q{Q}^{\prime }}$ in a relativized quark model
• Employing spin symmetry to disentangle different models for the XYZ states
• Analysis of the $Z(4430)$ as the first radial excitation of the $Z_c(3900)$
• Open charm and bottom tetraquarks in an extended relativized quark model
• Production of Tetraquarks at the LHC
• Treating $Z_c(3900)$ and $Z(4430)$ as the ground-state and first radially excited tetraquarks
• Fully-heavy tetraquark spectroscopy in the relativistic quark model
• XYZ-like Spectra from Laplace Sum Rule at N2LO in the Chiral Limit
• Four-quark structure of Zc(3900), Z(4430) and Xb(5568) states
• Charged charmonium-like Z+(4430) from rescattering in conventional B decays
• Z_c -like spectra from QCD Laplace sum rules at NLO
• Construction of $bb\bar{u}\bar{d}$ tetraquark states on lattice with NRQCD bottom and HISQ up/down quarks
• Probing the nature of Z_c states via the eta_c rho decay
• Light meson spectroscopy from Dalitz plot analyses of ${\eta }_c$ decays to ${\eta }^{\prime }{K}^{+}{K}^{-}$, ${\eta }^{\prime }{\pi }^{+}{\pi }^{-}$, and $\eta {\pi }^{+}{\pi }^{-}$ produced in two-photon interactions
• Nonrelativistic effective field theory for heavy exotic hadrons
• Spectroscopy of Exotic Hadrons Formed from Dynamical Diquarks
• Dalitz-plot decomposition for three-body decays
• Strong decays of the $XYZ$ states
• Tetraquarks in large-$N_c$ QCD
• Triply heavy tetraquark states with the $QQ\bar{Q}\bar{q}$ configuration
• Model-independent observation of exotic contributions to $B^0\to J/\psi K^{+}{\pi }^{-}$ decays
• Charmonium and Charmoniumlike States at the BESIII Experiment
• Magnetic dipole moment of the $Z_{cs}(3985)$ state: diquark-antidiquark and molecular pictures
• The Spectrum of $P$-Wave Hidden-Charm Exotic Mesons in the Diquark Model
• Importance of meson-meson and of diquark-antidiquark creation operators for a $\bar{b}\bar{b}ud$ tetraquark
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Correlation of the hidden-charm molecular tetraquarks and the charmoniumlike structures existing in the $B\to XYZ+K$
• Resolving the puzzling decay patterns of charged $Z_c$ and $Z_b$ states
• Production of exotic hadrons in $pp$ and nuclear collisions
• Tetraquark Cusp Effects from Diquark Pair Production
• The newly observed $Z_{cs}(3985{)}^{-}$ state: in vacuum and a dense medium
• The hidden-charm strong decays of the $Z_c$ states
• Study of $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays
• Magnetic dipole moments of the $Z_c(4020{)}^{+}$, $Z_c(4200{)}^{+}$, $Z_{cs}(4000{)}^{+}$ and $Z_{cs}(4220{)}^{+}$ states in light-cone QCD
• Settling the $Z_c(4600)$ in the charged charmonium-like family
• Two-particle contributions and nonlocal effects in the QCD sum rules for the axialvector tetraquark candidate $Z_c(3900)$
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Manifestation of the $P$-wave diproton resonance in single-pion production in $pp$ collisions
• Exotic Four Quark Matter: $Z_1(4475)$
• Recent progress on the study of the charmoniumlike states
• Molecular Interpretation of the Supercharmonium State Z(4475)
• Insights into $Z_b(10610)$ and $Z_b(10650)$ from dipion transitions from ${\rm Y}(10860)$
• Spectroscopic parameters and decays of the resonance $Z_b(10610)$
• Weak decays of triply heavy baryons in light front approach
• Strange Hadron Spectroscopy with Secondary KL Beam in Hall D
• Study of three-flavored heavy dibaryons using lattice QCD
• Study of $I=0$ bottomonium bound states and resonances in $S$, $P$, $D$ and $F$ waves with lattice QCD static-static-light-light potentials
• Where are the hidden-charm hexaquarks?
• Hidden-charm Hexaquarks from Lattice QCD
• The interplay between compact and molecular structures in tetraquarks
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• Four-quark structure of the excited states of heavy mesons
• Heavy Flavour Physics at the LHC
• Bottom Tetraquark Production at RHIC?
• Hadronic molecules with a $\bar{D}$ meson in a medium
• Mass spectra of hidden heavy-flavor tetraquarks with two and four heavy quarks
• Double-Regge Exchange Limit for the $\gamma p\to K^{+}{K}^{-}p$ Reaction
• Status and Prospects of Exotic Hadrons at Belle II
• Study of charmonium and charmonium-like contributions in $B^{+}\to J/\psi \eta K^{+}$ decays
• $K^0\Lambda$ and $D^{-}{\Lambda }_c^{+}$ production induced by pion beams off the nucleon
• The strong vertices of charmed mesons $D$, $D^{\ast }$ and charmonia $J/\psi$, ${\eta }_c$
• Open charm contributions to the E1 transitions of $\psi (3686)$ and $\psi (3770)\to \gamma {\chi }_{cJ}$
• Diquark bound states with a completely crossed ladder truncation
• Radiative Transitions of Charmoniumlike Exotics in the Dynamical Diquark Model
• SU(3) analysis of fully-light tetraquarks in heavy meson weak decays
• Measurements of $e^{+}{e}^{-}\to {\eta }_{\mathrm{c}}{\pi }^{+}{\pi }^{-}{\pi }^0$, ${\eta }_{\mathrm{c}}{\pi }^{+}{\pi }^{-}$ and ${\eta }_{\mathrm{c}}{\pi }^0\gamma$ at $\sqrt{s}$ from 4.18 to 4.60\,GeV, and search for a $Z_{\mathrm{c}}$ state close to the $D\bar{D}$ threshold decaying to ${\eta }_{\mathrm{c}}\pi$ at $\sqrt{s}$ = 4.23 GeV
• Magnetic and quadrupole moments of the $Z_c(4020{)}^{+}$, $Z_c(4050{)}^{+}$, and $Z_c(4600{)}^{+}$ states in the diquark-antidiquark picture
• Probing exotic $J^{PC}$ resonances from deeply bound charmoniumlike molecules: Insights for identifying exotic hadrons
• Two-pion exchange for coupled-channel scattering of two heavy mesons
• Modifications on parameters of $Z(4430)$ in a dense medium
• Measurement of f${}_1$(1285) production in pp collisions at $\sqrt{\text{s}}$ = 13 TeV
• Gluons, Light and Heavy Quarks in the Instanton Vacuum
• A short review on the compositeness of the $X(3872)$
• On the emergence of heavy quark spin symmetry breaking in heavy quarkonium decays
• Observation of B${}^0$ $\to$ $\psi$(2S)K${}_{\mathrm{S}}^0{\pi }^{+}{\pi }^{-}$ and B${}_{\mathrm{S}}^0$ $\to$ $\psi$(2S)K${}_{\mathrm{S}}^0$ decays
• Constituent counting rule for exclusive production of heavy quarkoniumlike exotic resonance and a light hadron
• Production of the (predicted) $K^{\ast }(4307)$ in $B$ decays
• Study of the hidden charm pentaquarks ${\Lambda }_{c\bar{c}}$ above $4$ GeV
• How Often Do Diquarks Form? A Very Simple Model
• Light meson emissions of the selected charmonium-like states within compact tetraquark configurations
• Review on Hadron Spectroscopy
• Flavored tetraquark spectroscopy
• $Z_c(4430)$, $Z_c(4200)$, $Z_1(4050)$, and $Z_2(4250)$ as triangle singularities
• $\omega \to 3\pi$ and $\omega {\pi }^0$ transition form factor revisited
• Search for the reaction $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\chi }_{cJ}$ and a charmonium-like structure decaying to ${\chi }_{cJ}{\pi }^{\pm }$ between 4.18 and 4.60 GeV
• The Spectrum of Low-$p_T$ $J/\psi$ in Heavy-Ion Collisions in a Statistical Two-Body Fractal Model
• Analysis of the tensor-tensor type scalar tetraquark states with QCD sum rules
• Prediction of an $I(J^P)=0(1^{-})$ $\bar{b}\bar{b}ud$ Tetraquark Resonance Close to the $B^{\ast }{B}^{\ast }$ Threshold Using Lattice QCD Potentials
• The Joint Physics Analysis Center: Recent results
• Isospin breaking from diquark clustering
• Mass spectroscopy of charmonium using a screened potential
• Hadron Spectroscopy, exotics and $B_c^{+}$ physics at LHCb
• Heavy flavour spectroscopy at LHC
• Unexpected Mesons X, Y, Z, ... (tetraquarks? hadron molecules? ...)
• Systematic study of fully heavy-flavored tetraquarks $Q_1{Q}_2{\bar{Q}}_1{\bar{Q}}_2(Q_{1;2}\in \left\{b;c\right\})$: Mass spectra, threshold analysis, and confrontation with LHC data
• Exotic Charmonium-like States at BESIII
• Some aspects on four quarks recombination
• Exotic hadrons associated with $b$-quark
• On the scalar $\pi K$ form factor beyond the elastic region
• Meson scattering and tetraquarks in two-dimensional QCD
• Observation and investigation of the $T_{c\bar{c}1}(4430{)}^{+}$ structure in $B^{+}\to \psi (2S)K_{\text{S}}^0{\pi }^{+}$ decays
• Collective long-range particle correlations in proton-proton and proton-nucleus collisions at the LHC with the CMS detector
• Parametrically narrow tetraquark states containing one heavy quark and one heavy antiquark