Dalitz Plot Analysis of the Decay D^+ --> K^- pi^+ pi^+ and Indication of a Low-Mass Scalar K pi Resonance

Abstract

We study the Dalitz plot of the decay D^+ --> K^- pi^+ pi^+ with a sample of 15090 events from Fermilab experiment E791. Modeling the decay amplitude as the coherent sum of known K pi resonances and a uniform nonresonant term, we do not obtain an acceptable fit. If we allow the mass and width of the K^*_0(1430) to float, we obtain values consistent with those from PDG but the chi^2 per degree of freedom of the fit is still unsatisfactory. A good fit is found when we allow for the presence of an additional scalar resonance, with mass 797 +/- 19 +/- 43 MeV/c^2 and width 410 +/- 43 +/- 87 MeV/c^2. The mass and width of the K^*_0(1430) become 1459 +/- 7 +/- 5 MeV/c^2 and 175 +/- 12 +/- 12 MeV/c^2, respectively. Our results provide new information on the scalar sector in hadron spectroscopy.

Accepted for publication in Physical Review Letters

References in corpus (1)

• A low-lying scalar meson nonet in a unitarized meson model

Cited by in corpus (142)

• Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)
• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• The Physics of the B Factories
• Constituent quark model study of the meson spectra
• A new look at scalar mesons
• Observed D_s(2317) and tentative D(2100-2300) as the charmed cousins of the light scalar nonet
• On the nature of light scalar mesons from their large $N_c$ behavior
• A Theory of Scalar Mesons
• Four Sorts of Mesons
• Charmless hadronic B decays involving scalar mesons: Implications to the nature of light scalar mesons
• Nature of the f_0(600) from its N_c dependence at two loops in unitarized Chiral Perturbation Theory
• The Juelich hyperon-nucleon model revisited
• B Decays as Spectroscope for Charmed Four-quark States
• The K^*_0(800) scalar resonance from Roy-Steiner representations of pi K scattering
• Dalitz analysis of the three-body charmless decays B+=>K+Pi+Pi- and B+=>K+K+K-
• Weak decays of heavy hadrons into dynamically generated resonances
• The nature of $\sigma$, $\kappa$, $a_0(980)$ and $f_0(980)$
• Improved measurement of the CKM angle gamma in B^-+ -> D^(*) K^(*)-+ decays with a Dalitz plot analysis of D decays to K_S^0 pi^+ pi^- and K_S^0 K^+ K^-
• Evidence for kappa Meson Production in J/psi -> bar{K}^*(892)^0K^+pi^- Process
• QCD sum rule approach for the light scalar mesons as four-quark states
• Scalar Particles in Lattice QCD
• Hadronic D Decays Involving Scalar Mesons
• The $\kappa$ resonance in s wave $\pi K$ scatterings
• A chiral model for bar{q}q and bar{q}bar{q}qq$ mesons
• Model Independent Measurement of \swave $K^{-}{\pi }^{+}$ systems using $\Dp\to Kππ$ Decays from Fermilab E791
• Final State Interactions in Hadronic D decays
• The Mixing Angle of the Lightest Scalar Nonet
• Light Scalar Tetraquark Mesons in the QCD Sum Rule
• Isosinglet Scalar Mesons Below 2 GeV and the Scalar Glueball Mass
• Finite volume effects in pion-kaon scattering and reconstruction of the kappa(800) resonance
• Tetraquark spectroscopy
• Effects of eight-quark interactions on the hadronic vacuum and mass spectra of light mesons
• Dalitz plot analysis of Ds+ --> K+ K- pi+
• Scalar meson in dynamical and partially quenched two-flavor QCD: lattice results and chiral loops
• Nonresonant Three-body Decays of D and B Mesons
• A Review on Partial-wave Dynamics with Chiral Effective Field Theory and Dispersion Relation
• Analysis of the scalar and axial-vector heavy diquark states with QCD sum rules
• Analysis of U${}_A$(1) symmetry-breaking and restoration effects on the scalar-pseudoscalar spectrum
• Towards three-body unitarity in $D^{+}\to K^{-}{\pi }^{+}{\pi }^{+}$
• S wave Kπscattering and effects of κin J/ψ\to {\bar K}^{*0}(892)K^+π^-
• Mass Uncertainties of f0(600) and f0(1370) and their Effects on Determination of the Quark and Glueball Admixtures of the I=0 Scalar Mesons
• An improved study of the kappa resonance and the non-exotic $s$ wave $\pi K$ scatterings up to $\sqrt{s}=2.1$GeV of LASS data
• Dalitz plot analysis of the D^+ -> K^-pi^+pi^+ decay
• The Scalar Meson f0(980) in Heavy-Meson Decays
• QCD Sum Rule Study of the Masses of Light Tetraquark Scalar Mesons
• Dalitz Plot Analysis of D_s+ -> pi+ pi- pi+
• The kappa in E791 data for D->K-pi-pi
• Dalitz plot analysis of the D+ to K-pi+pi+ decay in the FOCUS experiment
• Analysis of the D+ --> K- pi+ e+ nu_e decay channel
• Scalar kappa meson in K* photoproduction
• The effect of S-wave interference on the $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ angular observables
• Hadronic D decays involving even-parity light mesons
• Observation of charged kappa in J/psi -> K*(892)-+Kspi+-, K*(892)-+ -> Kspi-+ at BESII
• Hadron Spectroscopy: Theory and Experiment
• Parametrizations of three-body hadronic $B$- and $D$-decay amplitudes in terms of analytic and unitary meson-meson form factors
• Strange resonance poles from $K\pi$ scattering below 1.8 GeV
• Dispersive $\pi K\to \pi K$ and $\pi \pi \to K\bar{K}$ amplitudes from scattering data, threshold parameters and the lightest strange resonance $\kappa$ or $K_0^{\ast }(700)$
• Amplitude Analysis of the decay D^0 --> K^- K^+ pi^0
• The structure of $f_0(980)$ from charmed mesons decays
• Measurement of $CP$ violation and constraints on the CKM angle $\gamma$ in $B^{\pm }\to D{K}^{\pm }$ with $D\to K_S^0{\pi }^{+}{\pi }^{-}$ decays
• Ground-State Scalar $\bar{q}q$ Nonet: SU(3) Mass Splittings and Strong, Electromagnetic, and Weak Decay Rates
• The $K^{-}{\pi }^{+}$ S-wave from the $D^{+}\to K^{-}{\pi }^{+}{\pi }^{+}$ decay
• B decays into light scalar particles and glueball
• Lattice Study of Low-lying Nonet Scalar Mesons in Quenched Approximation
• First Observation and Dalitz Analysis of the D^0 --> K_S^0 eta pi^0 Decay
• Hadronic Mass Spectrum Analysis of D+ into K- pi+ mu+ nu Decay and Measurement of the K*(892)^0 Mass and Width
• Effects to Scalar Meson Decays of Strong Mixing between Low and High Mass Scalar Mesons
• From the Kappa via the Ds0*(2317) to the chi_c0: connecting light and heavy scalar mesons
• Effective restoration of the U_A(1) symmetry with temperature and density
• Dalitz Plot Analysis of the D+ --> pi- pi+ pi+ Decay
• Studies of the resonance structure in $D^0\to K_S^0{K}^{\pm }{\pi }^{\mp }$ decays
• Positive Parity Scalar Mesons in the 1-2 GeV Mass Range
• Direct CP violation in beauty and charm hadron decays
• $S$-wave $K\pi$ contributions to the hadronic charmonium $B$ decays in the perturbative QCD approach
• $B^0$ and $B_s^0$ decays into $J/\psi$ plus a scalar or vector meson
• Coupled-channel analysis of $D^{+}\to K^{-}{\pi }^{+}{\pi }^{+}$ decay
• Searches for CP Violation and ππS-Wave in the Dalitz-Plot Analysis of D0 --> π+π-\pi0
• Classification of the scalar mesons: a strange pole expedition into charm and beauty territory
• Evidence for two-quark content of $f_0(980)$ in exclusive $b\to c$ decays
• The quadratic scalar radius of the pion and the mixed $\pi -K$ radius
• Kpi form factors and final state interactions in D+ --> K- pi+ pi+ decays
• $I=1/2$ $S$-wave and $P$-wave $K\pi$ scattering and the $\kappa$ and $K^{\ast }$ resonances from lattice QCD
• Dalitz Plot Analysis of D0-->K0bar K+ K-
• Modern meson spectroscopy: the fundamental role of unitarity
• Cross sections for the $\gamma p\to K^{\ast +}\Lambda$ and $\gamma p\to K^{\ast +}{\Sigma }^0$ reactions measured at CLAS
• Long distance expansion for the NJL model with SU(3) and U_A(1) breaking
• Measurement of the I=1/2 $K\pi$ $\mathcal{S}$-wave amplitude from Dalitz plot analyses of ${\eta }_c\to K\bar{K}\pi$ in two-photon interactions
• Dalitz analysis of $D^0\to K^{-}{\pi }^{+}\eta$ decays at Belle
• Multi-Meson Model for the $D^{+}\to K^{+}{K}^{-}{K}^{+}$ decay amplitude
• Amplitude Analysis of the $D^{+}\to K_S^0{\pi }^{+}{\pi }^0$ Dalitz Plot
• Final state interaction in $D^{+}\to K^{-}{\pi }^{+}{\pi }^{+}$ with $K\pi$ I=1/2 and 3/2 channels
• Chiral Nonet Mixing in ${\eta }^{\prime }\to \eta \pi \pi$ Decay
• Measuring the Relative Strong Phase in $D^0\to K^{\ast +}{K}^{-}$ and $D^0\to K^{\ast -}{K}^{+}$ Decays
• Annihilation contribution and $B\to a_0\pi ,f_{0}K$ decays
• Strange Hadron Spectroscopy with Secondary KL Beam in Hall D
• The preliminary lattice QCD calculation of $\kappa$ meson decay width
• Hadronic D and D_s Meson Decays
• Structure of Light Scalar Mesons from D_s and D^0 Non-Leptonic Decays
• The Quark-Level Linear σ Model
• Hadronic Charmed Meson Decays Involving Tensor Mesons
• Meson Form Factors and the Quark-Level Linear Sigma Model
• A study of charged kappa in $J/\psi \to K^{\pm }{K}_s{\pi }^{\mp }{\pi }^0$
• Scalar resonances in a unitary $\pi -\pi$ $S$-wave model for $D^{+}\to {\pi }^{+}{\pi }^{-}{\pi }^{+}$
• Study of charmonium decays to $K_S^{0}K\pi$ in the $B\to (K_S^{0}K\pi )K$ channels
• Probing the substructure of $f_0(1370)$
• Can experiment distinguish tetraquark scalars, molecules and $\qq$ mesons?
• Analysis of the nonet scalar mesons as tetraquark states with new QCD sum rules
• Proximity of $f_0(1500)$ and $f_0(1710)$ to the scalar glueball
• Two photon decay of neutral scalars below 1.5 GeV in a chiral model for bar{q}q and bar{q}bar{q}qq states
• Investigating the composition of the K${}_0^{\ast }(700)$ state with ${\pi }^{\pm }$K${}_{\mathrm{S}}^0$ correlations at the LHC
• $\pi \pi$ Invariant mass spectrum in $V^{\prime }\to V\pi \pi$ and the $f_0(600)$ pole
• Measurement of the CKM angle $\gamma$ using $B^0\to D{K}^{\ast 0}$ with $D\to K_S^0{\pi }^{+}{\pi }^{-}$ decays
• Final state hadronic interactions and non-resonant $B^{\pm }\to K^{\pm }{\pi }^{+}{\pi }^{-}$ decays
• Scalar and axial-vector mesons
• Constituent and current quark masses at low chiral energies
• Isospin and a possible interpretation of the newly observed X(1576)
• Complex amplitude phase motion in Dalitz plot heavy meson three body decay
• Lattice calculation of $\kappa$ meson
• Measurement of the B- -> D0 K*- branching fraction
• Chiral Nonet Mixing in $\pi K$ Scattering
• The low-lying Scalar Mesons and Related Topics
• A chiral qbarqbarqq nonet?
• Further study of $D_s^{+}$ decays into ${\pi }^{-}{\pi }^{+}{\pi }^{+}$
• S-wave and P-wave pion-pion and kaon-pion contributions to three-body decay processes in the Resonance-Spectrum Expansion
• Multibody decay analyses -- a new phenomenological model for meson-meson subamplitudes
• The D-pi S-wave
• Studying $\kappa$ meson with a MILC fine lattice
• Heavy meson decay in three-mesons and FSI
• Dalitz Analyses: A Tool for Physics within and Beyond the Standard Model
• Chiral Nonet Mixing in $\pi \eta$ Scattering
• Semileptonic and nonleptonic decays of $D$ into tensor mesons with light-cone sum rule
• Isobar rescattering model and light scalar mesons
• CP Violation and $\Delta I=1/2$ Enhancement for $K\to \pi \pi$, $K\to \pi \pi \gamma$ Weak Decays
• Sigma meson in QCD sum rules using a two quark current with derivatives
• Scalar meson properties from D-meson decays
• I=1/2 low-lying mesons in lattice QCD
• Precision dispersive approaches versus unitarized Chiral Perturbation Theory for the lightest scalar resonances $\sigma /f_0(500)$ and $\kappa /K_0^{\ast }(700)$
• On the scalar $\pi K$ form factor beyond the elastic region
• Looking for nonstandard CP violation in B^\pm -> D_s^\pm D^0 pi^0 decays
• Are there significant scalar resonances in $B^{-}\to D^{(\ast )0}{K}^{-}{K}^0$ decays?
• Summary of Experimental Meson Physics
• Hidden-charm scalar tetra-quark mesons