Observation of $\psi (4415)\to D\bar{D}{}_2^{\ast }(2460)$ decay using initial-state radiation

Abstract

We report the first observation of the $\psi (4415)$ resonance in the reaction $\e^+e^-\to D^0 D^-π^+$ and a measurement of its cross section in the center-of-mass energy range $4.0\mathrm{GeV}$ to $5.0\mathrm{GeV}$ with initial state radiation. From a study of resonant structure in $\psi (4415)$ decay we conclude that the $\psi (4415)\to D^0{D}^{-}{\pi }^{+}$ decay is dominated by $\psi (4415)\to D\bar{D}{}_2^{\ast }(2460)$. We obtain $\mathcal{B}(\psi (4415)\to D^0{D}^{-}{\pi }_{\mathrm{non}-\mathrm{resonant}}^{+})/\mathcal{B}(\psi (4415)\to D\bar{D}{}_2^{\ast }(2460)\to D^0{D}^{-}{\pi }^{+})<0.22$ at 90% C.L. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 673 ${\mathrm{fb}}^{-1}$.

arXiv commentPresented on EPS07, LP07, QWG07conferences

References in corpus (9)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Higher Charmonia
• Observation of a Broad Structure in the ${\pi }^{+}{\pi }^{-}J/\psi$ Mass Spectrum around 4.26 GeV/$c^2$
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
• Measurements of the Cross Section for e+e- -> hadrons at Center-of-Mass Energies from 2 to 5 GeV
• Measurement of the near-threshold $e^{+}{e}^{-}\to D^{(\ast )\pm }D{}^{\ast \mp }$ cross section using initial-state radiation
• A New Analysis of the R Measurements: Resonance Parameters of the Higher Vector States of Charmonium

Cited by in corpus (53)

• Heavy quarkonium: progress, puzzles, and opportunities
• The hidden-charm pentaquark and tetraquark states
• Heavy-Quark QCD Exotica
• Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
• Higher Charmonia and X,Y,Z states with Screened Potential
• Observation of a charged (DD*bar)- mass peak in e+e- --> pi+ (DD*bar)- at Ecm=4.26 GeV
• Quarkonia and their transitions
• Observation of a near-threshold enhancement in the e+e- -->Lambda_c+Lambda_c- cross section using initial-state radiation
• An overview of $XYZ$ new particles
• Evidence that the Y(4660) is a f_0(980)psi' bound state
• Exclusive event generator for $e^{+}{e}^{-}$ scan experiments
• The XYZ states revisited
• Constituent quark model description of charmonium phenomenology
• A New Hadron Spectroscopy
• Evidence of a resonant structure in the $e^{+}{e}^{-}\to {\pi }^{+}{D}^0{D}^{\ast -}$ cross section between 4.05 and 4.60 GeV
• Hadron Production via e+e- Collisions with Initial State Radiation
• Constructing $J/\psi$ family with updated data of charmoniumlike $Y$ states
• Measurement of the e+e- --> D0D*-pi+ cross section using initial-state radiation
• Reconciling the X(4630) with the Y(4660)
• Strong decays of higher charmonium states into open-charm meson pairs
• Nonresonant explanation for the Y(4260) structure observed in the $e^{+}{e}^{-}\to J/\psi {\pi }^{+}{\pi }^{-}$ process
• Measurement of the $e^{+}{e}^{-}\to \eta J/\psi$ cross section and search for $e^{+}{e}^{-}\to {\pi }^{0}J/\psi$ at center-of-mass energies between 3.810 and 4.600~GeV
• Weak productions of new charmonium in semi-leptonic decays of B_c
• Investigating possible decay modes of $Y(4260)$ under the $D_1(2420)\bar{D}+c.c$ molecular state ansatz
• Observation of $e^{+}{e}^{-}\to {\chi }_{c0}\omega$ and missing higher charmonium $\psi (4S)$
• Measurement of $e^{+}{e}^{-}\to D_s^{(\ast )+}{D}_s^{(\ast )-}$ cross sections near threshold using initial-state radiation
• Analysis of Y(4660) and related bound states with QCD sum rules
• Observation of a vector charmoniumlike state in $e^{+}{e}^{-}\to D_s^{+}{D}_{s1}(2536{)}^{-}+c.c.$
• Tuning and validation of hadronic event generator for $R$ value measurements in the tau-charm region
• Exclusive open-charm near-threshold cross sections in a coupled-channel approach
• Unified Fano-like interference picture for charmonium-like states $Y(4008)$, $Y(4260)$ and $Y(4360)$
• $X(4260)$ Revisited: A Coupled Channel Perspective
• Angular analysis of the $e^{+}{e}^{-}\to D^{(\ast )\pm }{D}^{\ast \mp }$ process near the open charm threshold using initial-state radiation
• Measurements of $e^{+}{e}^{-}\to K_S^0{K}^{\pm }{\pi }^{\mp }{\pi }^0$ and $K_S^0{K}^{\pm }{\pi }^{\mp }\eta$ at center-of-mass energies from $3.90$ to $4.60\mathrm{GeV}$
• Measurements of the branching fractions of ${\eta }_c\to K^{+}{K}^{-}{\pi }^0$, $K_S^0{K}^{\pm }{\pi }^{\mp }$,$2({\pi }^{+}{\pi }^{-}{\pi }^0)$, and $p\bar{p}$
• Global coupled-channel analysis of $e^{+}{e}^{-}\to c\bar{c}$ processes in $\sqrt{s}=3.75-4.7$ GeV
• Are the XYZ states unconventional states or conventional states with unconventional properties?
• Analysis of the pseudoscalar partner of the Y(4660) and related bound states
• Charged charmonium-like states as rescattering effects in B -> D_sJ D^(*) decays
• A novel explanation of charmonium-like structure in $e^{+}{e}^{-}\to \psi (2S){\pi }^{+}{\pi }^{-}$
• Analysis of the radiative decays among the charmonium states
• Observation of $e^{+}{e}^{-}\to D_s^{+}\overline{D}{}^{(\ast )0}{K}^{-}$ and study of the $P$-wave $D_s$ mesons
• The leptonic widths of high $\psi$-resonances in unitary coupled-channel model
• Three body open flavor decays of higher charmonium and bottomonium
• Masses of tetraquark states in the hidden charm sector above $D-D^{\ast }$ threshold
• Hadron Spectroscopy Results from Belle
• Coupled-channel study of $4S$-$3D$ mixing dynamics in $\psi (4220)$ and $\psi (4380)$
• Exotic Charmonium-like States at BESIII
• Charmonium and Light Meson Spectroscopy
• Exotic open and hidden charm states
• Dissociation cross sections of $\psi (3770)$, $\psi (4040)$, $\psi (4160)$, and $\psi (4415)$ mesons with nucleons
• Charm cross-section and charmonium(like) states in e+e- annihilation with Belle
• Searches for, and Properties of, New Charmonium-like States