Observation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2

Abstract

We have observed a narrow state near 2.32 GeV/c^2 in the inclusive Ds+ pi0 invariant mass distributionfrom e+e- annihilation data at energies near 10.6 GeV. The observed width is consistent with the experimental resolution. The small intrinsic width and the quantum numbers of the final state indicate that the decay violates isospin conservation. The state has natural spin-parity and the low mass suggests a JP=0+ assignment. The data sample corresponds to an integrated luminosity of 91 fb-1 recorded by the BABAR detector at the PEP2 asymmetric-energy e+e- storage ring.

7 pages, 3 figures, submitted to Phys. Rev. Lett

References in corpus (2)

• The BABAR Detector
• Excited Heavy-Light Systems and Hadronic Transitions

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• Exotic hadrons and hadron-hadron interactions in heavy ion collisions
• Scalar and axial-vector mesons
• Theoretical investigation of the molecular nature of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ and the possibility of observing the $D\bar{D}K$ bound state $K_{c\bar{c}}(4180)$ in inclusive $e^{+}{e}^{-}\to c\bar{c}$ collisions
• Higher Charmonium
• Describing non-$q\bar{q}$ candidates
• Understanding penta quark with various quark models
• Masses and Mixing of $cq\bar{q}\bar{q}$ Tetraquarks Using Glozman-Riska Hyperfine Interaction
• Estimating Mass of Sigma-Meson and Study on Application of the Linear Sigma-Model
• B_c meson rare decays in the light-cone quark model
• Discovery of $T_{c\bar{s}0}^a(2900{)}^{0,++}$ implies new charmed-strange pentaquark system
• The strong vertices of charmed mesons $D$, $D^{\ast }$ and charmonia $J/\psi$, ${\eta }_c$
• Exploring the mass spectrum and the electromagnetic properties of the possible ${\Xi }_{cc}{K}^{(\ast )}$ and ${\Xi }_{cc}{\bar{K}}^{(\ast )}$ molecules
• Study of $D_{s1}(2460{)}^{+}\to D_s^{+}{\pi }^{+}{\pi }^{-}$ in $B\to {\bar{D}}^{(\ast )}{D}_s^{+}{\pi }^{+}{\pi }^{-}$ decays
• Study of $B\to D^{\ast \ast }\pi$ decays
• Puzzles of excited charm meson masses
• Possible Interpretations of $D_{sJ}^{+}(2632)$ If It Really Exists
• Status of chiral doublers of heavy-light hadrons in light of recent BaBar Cleo, Belle and Selex D_s states
• Experimental limits on New Physics from charm decay
• Strong decays $B_{s0}\to B_s\pi$ and $B_{s1}\to B_s^{\ast }\pi$ with light-cone QCD sum rules
• Production of the $D_{s0}(2317)$ and $D_{s1}(2460)$ by kaon-induced reactions on a proton target
• Search for a doubly-charged $DDK$ bound state in ${\rm Y}(1S,2S)$ inclusive decays and via direct production in $e^{+}{e}^{-}$ collisions at $\sqrt{s}$ = 10.520, 10.580, and 10.867 GeV
• Search for prompt production of pentaquarks in charm hadron final states
• Measurements of Born Cross Sections of $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{sJ}^{-}+c.c.$
• Productions of $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ in $B_{(s)}$ and ${\Lambda }_b({\Xi }_b)$ decays
• Radiative decays of the charmed mesons in a modified relativistic quark model
• Holographic three flavor baryon in the Witten-Sakai-Sugimoto model with the D0-D4 background
• P-Wave Charmed-Strange Mesons
• Masses and radiative decay widths of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ and their bottom analogs
• Masses of the doubly heavy tetraquarks in a constituent quark model
• Microscopic derivation of the pion coupling to heavy-light mesons
• Tetraquark particle in the string model
• Phase shifts of the light pseudoscalar meson and heavy meson scattering in heavy meson chiral perturbation theory
• Insights into the nature of the $P_{cs}(4459)$
• Heavy Exotic Molecules
• Possible $P$- wave $D_s{\bar{D}}_{s0}(2317)$ molecular state $Y^{{}^{\prime }}(4274)$
• S-wave DK interactions in the chiral SU(3) quark model
• Systematic study of pentaquark states: $qqq-q\bar{q}$ configuration
• Structure of Mass Gap between Two Spin Multiplets
• Triquark structure and isospin symmetry breaking in exotic Ds mesons
• Semileptonic decays of $B_{s1}$, $B_{s2}^{\ast }$, $B_{s0}$ and $B_{s1}^{\prime }$
• Predictions of α-decay half-lives for neutron-deficient nuclei with the aid of artificial neural network
• Towards an Understanding of the New Charm and Charm-Strange Mesons
• Absolute Energy Calibration with the Neutron-Activated Liquid-Source System at BaBar's CsI(Tl) Calorimeter
• The quasiclassical theory of the Dirac equation with a scalar-vector interaction and its applications in the theory of heavy-light mesons
• Pentaquarks, Skyrmions and the Vector Manifestation of Chiral Symmetry
• Semileptonic B decays into even parity charmed mesons
• Production of the (predicted) $K^{\ast }(4307)$ in $B$ decays
• $\bar{K}\bar{D}N$ molecular state as a "$uuds\bar{c}$ pentaquark" in a three-body calculation
• Precise mass spectrum of mesons with open charm in the harmonic quarks and oscillators
• SU(3)-symmetry breaking effects and mass splitting in scalar and pseudoscalar $D^{+}$ mesons from QCD sum rules
• Investigating quantum numbers of new $c\bar{s}$ states
• Investigation of the $D_{s1}$ structure via $B_c$ to $D_{s1}{l}^{+}{l}^{-}/\nu \bar{\nu }$ transitions in QCD
• Properties of the DsJ states
• New Particles from Belle
• Pseudoscalar Goldstone Bosons Scattering off Charmed Baryons with Chiral Perturbation Theory
• Charmed and Charmed-Strange Mesons in Kaluza-Klein Picture
• Theoretical Overview: The New Mesons
• New near-threshold mesons
• Threshold behavior of scattering poles
• D_{s0}^+(2317) as an iso-triplet four-quark meson
• Exploring S-Wave Threshold Effects in QCD: A Heavy-Light Approach
• The Possible $J^{PC}{I}^G=2^{++}{2}^{+}$ State X(1600)
• Probing $D_{s0}^{\ast }(2317)$ in the decays of $B$ to two charmed mesons
• $B_{(s)}\to D_{s0}^{\ast }(2317)P(V)$ decays in perturbative QCD approach
• Investigating $S$-wave bound states composed of two pseudoscalar mesons
• Probing Wilson Loops in the QCD Instanton Vacuum
• Tetraquark and Pentaquark Systems in Lattice QCD
• $B_{s1}(5778)$ as a $B^{\ast }\bar{K}$ molecule in the Bethe-Salpeter equation approach
• Beyond CP violation: hadronic physics at BaBar
• Octet baryon and heavy meson interactions in chiral effective field theory
• Decay properties of $D_{s0}^{\ast }(2317{)}^{+}$ as a conventional $c\bar{s}$ meson
• Extracting beta and the new D_{sJ} resonances
• Multi-quark states
• Form factors of tetraquarks
• Heavy Meson Masses in the ε-Regime of HMχPT
• Coupled-channel study of $4S$-$3D$ mixing dynamics in $\psi (4220)$ and $\psi (4380)$
• Quarkonia & Pentaquarks
• On the proliferation of X's, Y's and Z's candidates
• Experimental status of excited $D_s^{+}$ mesons
• Exploratory study of the D_s spectrum in 2+1 Domain Wall QCD with heavy overlap
• Hadron and Quarkmonium Exotica
• Charm and Charmonium Spectroscopy
• P-Wave Charm Mesons as a Window to the D_{sJ} States
• Analysis of the hadronic molecules $DK$, $D^{\ast }K$, $D{K}^{\ast }$ and their bottom analogs with QCD sum rules
• Heavy-light charm mesons spectroscopy and decay widths
• f(2010) in Lattice QCD
• Towards the understanding of the meson spectra
• On the Recent Results of E835 Experiment at FNAL
• Strong and electromagnetic decays of the radially excited $D_s$ and $B_s$ mesons in light cone QCD sum rules
• Importance of Non-Perturbative QCD Parameters for Bottom Mesons
• Correlation function for the $n{\bar{D}}_{s0}^{\ast }(2317)$ interaction and the issue of elastic unitarity
• Chiral radiative corrections in potential model and the P-wave states of heavy-light mesons
• $D_s(0^{\pm })$ Mesons spectroscopy in Gaussian Sum Rules
• Development of electromagnetic calorimeter detectors and simulations for spectroscopic measurements of charmonium with PANDA
• Quark Model and multiquark system
• Summary of Experimental Meson Physics
• Chiral shifts in heavy-light mesons
• Threshold effects in hadron spectrum: a new spectroscopy?
• Understanding open-charm mesons
• Meson scattering and tetraquarks in two-dimensional QCD
• Proposed mixing between $2P$ and $1F$ wave charmonia
• Systematic exploration of triply heavy tetraquarks: spectroscopic and decay characteristics
• Exotic hadrons associated with $b$-quark
• Predicting charmed-strange molecular tetraquarks with $K^{(\ast )}$ and $T$-doublet charmed or anticharmed meson
• Observation of the radiative decay $D_s(2317{)}^{+}\to D_s^{\ast }\gamma$
• Meson Resonances in the Open and Hidden Charm Sectors