Measurement of e+e- -> pi+pi- cross section with CMD-2 around rho-meson

Abstract

The cross section of the process e+e- -> pi+pi- has been measured using about 114000 events collected by the CMD-2 detector at the VEPP-2M e+e- collider in the center-of-mass energy range from 0.61 to 0.96 GeV. Results of the pion form factor determination with a 0.6% systematic uncertainty are presented. Implications for the hadronic contribution to the muon anomalous magnetic moment are discussed.

17 pages, 4 figures, submitted to PLB

References in corpus (13)

• Precise Measurement of the Positive Muon Anomalous Magnetic Moment
• Hadronic contributions to $(g-2)$ of the leptons and to the effective fine structure constant $\alpha (M_Z^2)$
• Measurement of the Strong Coupling Constant and the Vector and Axial-Vector Spectral Functions in Hadronic Tau Decays
• New Results on the Hadronic Contributions to alpha(M_Z) and to (g-2)_mu
• Hadronic Structure in the Decay ${\tau }^{-}\to {\pi }^{-}{\pi }^0{\nu }_{\tau }$
• Measurement of the Total Cross Section for Hadronic Production by e+e- Annihilation at Energies between 2.6-5 Gev
• Four Pion Final States with Tagged Photons at Electron Positron Colliders
• Isospin Violation and the Magnetic Moment of the Muon
• Large angle QED processes at e^+e^- colliders at energies below 3 GeV
• On the theoretical uncertainties in the muon anomalous magnetic moment
• Measurement of omega meson parameters in pi^+pi^-pi^0 decay mode with CMD-2
• Radiative corrections for pion and kaon production at $e^{+}{e}^{-}$ colliders of energies below 2 GeV
• New results in rho^0 meson physics

Cited by in corpus (118)

• The anomalous magnetic moment of the muon in the Standard Model
• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.7 ppm
• Quest for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental data
• Branching ratios and spectral functions of tau decays: final ALEPH measurements and physics implications
• Updated Estimate of the Muon Magnetic Moment Using Revised Results from e+e- Annihilation
• Reanalysis of Hadronic Cross Section Measurements at CMD-2
• Dispersion analysis of the nucleon form factors including meson continua
• High-statistics measurement of the pion form factor in the rho-meson energy range with the CMD-2 detector
• Measurement of $\sigma (e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\gamma )$ and extraction of $\sigma (e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-})$ below 1 {\rm GeV} with the KLOE detector
• Update of the e^+e^-\toπ^+π^- cross section measured by SND detector in the energy region 400<\sqrt{s}<1000 MeV
• High-Statistics Study of the tau^- -> pi^- pi^0 nu_tau Decay
• Predictions for g-2 of the muon and alpha_QED(M_Z^2)
• The Standard Model Prediction of the Muon Anomalous Magnetic Moment
• The hadronic contributions to the anomalous magnetic moment of the muon
• Study of the Decay phi --> pi0 pi0 gamma with the KLOE Detector
• Constraints on the two-pion contribution to hadronic vacuum polarization
• Theory of the tau lepton anomalous magnetic moment
• Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range
• The anomalous magnetic moment of the muon in the Standard Model: an update
• The SM prediction of g-2 of the muon
• Radiative tau decay and the magnetic moment of the muon
• Dalitz plot analysis of $B^0\to {\overline{D}}^0{\pi }^{+}{\pi }^{-}$ decays
• Modeling the Pion and Kaon Form Factors in the Timelike Region
• Measurement of the Pion Form Factor in the Energy Range 1.04-1.38 GeV with the CMD-2 Detector
• Study of the process $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ in the energy region 400<\sqrt[]{s}<1000 MeV
• Upgraded Breaking Of The HLS Model: A Full Solution to the tau-e+e- and phi Decay Issues And Its Consequences On g-2 VMD Estimates
• Quasi-two-body decays $B\to K\rho \to K\pi \pi$ in perturbative QCD approach
• Isospin violating effects in e+e- vs. tau measurements of the pion form factor |F_pi|^2 (s)
• Study of the process $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0$ in the energy region $\sqrt[]{s}$ from 0.98 to 1.38 GeV.}
• Amplitude analysis of the $B^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}$ decay
• The radiative return at phi- and B-factories: FSR at next-to-leading order
• The pole structure of the unitary, crossing symmetric low energy $\pi \pi$ scattering amplitudes
• Study of the Process e+ e- --> omega pi0 --> pi0 pi0 gamma in c.m. Energy Range 920--1380 MeV at CMD-2
• The Dipion Mass Spectrum In e+e- Annihilation and tau Decay: A Dynamical (rho0, omega, phi) Mixing Approach
• Rho Meson Properties in the Chiral Theory Framework
• Laura++ : a Dalitz plot fitter
• A Global Treatment Of VMD Physics Up To The $\varphi$: I. $e^{+}{e}^{-}$ Annihilations, Anomalies And Vector Meson Partial Widths
• Low energy hadronic contribution to the QED vacuum polarization
• Study of $\overline{B^0}\to D^0{\pi }^{+}{\pi }^{-}$ decays
• Precision Study of ${\eta }^{\prime }\to \gamma {\pi }^{+}{\pi }^{-}$ Decay Dynamics
• Study of the Process e+ e- ---> eta gamma in c.m. Energy Range 600-1380 MeV at CMD-2
• Study of the Process $e^{+}{e}^{-}\to K_L^0{K}_S^0$ in the C.M.Energy Range 1.05-1.38 GeV with CMD-2
• Amplitude Analysis of B0-->K+ pi- pi0 and Evidence of Direct CP Violation in B--> K* pi decays
• Measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ process cross section with the SND detector at the VEPP-2000 collider in the energy region $0.525<\sqrt{s}<0.883$ GeV
• Measurement of CP-Violating Asymmetries in B0-->(rhopi)0 Using a Time-Dependent Dalitz Plot Analysis
• The cross sections of the muons and charged pions pairs production at electron-positron annihilation near the threshold
• Observation of $D^{+}\to f_0(500)e^{+}{\nu }_e$ and Improved Measurements of $D\to \rho e^{+}{\nu }_e$
• Rôle of the pion electromagnetic form factor in the $\Delta (1232)\to {\gamma }^{\ast }N$ timelike transition
• Novel evaluation of the two-pion contribution to the nucleon isovector form factors
• Masses and couplings of vector mesons from the pion electromagnetic, weak, and πγtransition form factors
• Measurement of the running of the fine structure constant below 1 GeV with the KLOE Detector
• Theoretical precision in estimates of the hadronic contributions to (g-2)_mu and alpha_QED(M_Z)
• Anomalous $\eta /{\eta }^{\prime }$ Decays: The Triangle and Box Anomalies
• Consequences of the BaBar e^+e^- --> pi^+pi^- Measurement for the Determination of Model-Dependent rho-omega Mixing Effects in Pi_{ρω}(m_ρ^2) and (g-2)_mu
• The role of sigma(e+e- -> hadrons) in precision tests of the Standard Model
• Final-sate radiation in electron-positron annihilation into a pion pair
• Pion transverse charge density from timelike form factor data
• Pion Form Factor Phase, PIon Pion Elasticity and New Electron-Positron Data
• Reactions with pions and vector mesons in the sector of odd intrinsic parity
• Measurement of CP Asymmetries and Branching Fractions in a Time-Dependent Dalitz Analysis of B^0-->(rho pi)^0 and a Constraint on the Quark Mixing Angle phi_2
• Exclusive Two-Vector-Meson Production from e^+ e^- Annihilation
• Spin-1 Correlators at Large NC: Matching OPE and Resonance Theory up to O(alpha_s)
• Models of Isospin Breaking in the Pion Form Factor: Consequences for the Determination of Pi_{ρω}(m_rho^2) and (g-2)_mu/2
• Measurement of ${\eta }^{\prime }\to {\pi }^{+}{\pi }^{-}{e}^{+}{e}^{-}$ and ${\eta }^{\prime }\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$
• Scalar mesons and the muon anomaly
• An Effective Approach to VMD at One Loop Order and the Departures from Ideal Mixing for Vector Mesons
• Chiral extrapolation of hadronic vacuum polarization
• $P$-wave contributions to $B\to \psi \pi \pi$ decays in perturbative QCD approach
• Measurement of CP-violating asymmetries in B^0 -> (rho pi)^0 decays using a time-dependent Dalitz plot analysis
• Study of the Process e+ e- --> pi0 pi0 gamma in c.m. Energy Range 600--970 MeV at CMD-2
• Pion radii in nonlocal chiral quark model
• Isospin Breaking in the Relation Between the tau-->nu_tau pi pi and e^+e^- -->pi^+ pi^- Versions of |F_π(s)|^2$ and Implications for (g-2)_mu
• Hadronic effects in leptonic systems: muonium hyperfine structure and anomalous magnetic moment of muon
• Recent BES measurements and the hadronic contribution to the QED vacuum polarization
• Constraints on the I=1 hadronic tau decay and e^+e^- --> hadrons data sets and implications for (g-2)_mu
• Evidence for $CP$ violation in $B^{+}\to K^{\ast }(892{)}^{+}{\pi }^0$ from a Dalitz plot analysis of $B^{+}\to K_{\mathrm{S}}^0{\pi }^{+}{\pi }^0$ decays
• Initial State Radiation: A success story
• The tau lepton anomalous magnetic moment
• Measurement of Branching Fractions in Tau Decays
• Hadronic decays of the tau lepton: Theoretical overview
• Information on the structure of the rho meson from the pion form-factor
• Measuring the hadronic cross section via radiative return
• Electromagnetic form factors of charged and neutral kaons in an extended vector-meson-dominance model
• Exclusive electroproduction of two pions at HERA
• Radiative corrections and Monte Carlo tools for low-energy hadronic cross sections in $e^{+}{e}^{-}$ collisions
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• The Radiative Return: A Review of Experimental Results
• Electron-Positron Annihilation into Hadron-Antihadron Pairs
• Rho - Omega Splitting and Mixing in Nuclear Matter
• Event generators for $\eta /{\eta }^{\prime }$ decays at BESIII
• Multiple solutions in extracting physics information from experimental data
• The $(g-2{)}_{\mu }$ anomaly, Higgs bosons and heavy neutrinos
• Vector form factor of the pion : A model-independent approach
• The Pion Form Factor Within the Hidden Local Symmetry Model
• $S$-wave contribution to rare $D^0\to {\pi }^{+}{\pi }^{-}{\ell }^{+}{\ell }^{-}$ decays in the Standard Model and sensitivity to New Physics
• Current quark mass and g-2 of muon and ee-->ππ
• The HLS approach to $(g-2{)}_{\mu }$~: A Solution to the "$\tau$ versus $e^{+}{e}^{-}$" Puzzle
• Spectral functions from Hadronic Tau Decays and QCD
• A model-independent parameterization of $B\to \pi \pi \ell \nu$ decays
• Evaluation of the Axial Vector Commutator Sum Rule for Pion-Pion Scattering
• Meson cloud contributions to the Dalitz decays of decuplet to octet baryons
• News from the Muon (g-2) Experiment at BNL
• Observation of $D^{+}\to f_0(500){\mu }^{+}{\nu }_{\mu }$ and study of $D^{+}\to {\pi }^{+}{\pi }^{-}{\ell }^{+}{\nu }_{\ell }$ decay dynamics
• Role of $\rho -\omega$ interference in semileptonic $B\to {\pi }^{+}{\pi }^{-}\ell {\bar{\nu }}_{\ell }$ decays
• Electroweak Gauge Theories and Alternative Theories at a Future Linear e+e- Collider
• Separation of $e^{+}{e}^{-}\to e^{+}{e}^{-}$ and $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}$ events using SND detector calorimeter
• Study of pion vector form factor and its contribution to the muon $(g-2)$
• Recent results from e+ e- --> hadrons
• Pion Form Factor at SND (new edition)
• Towards a Fully Automated Differential ${\text{NNLO}}_{\text{EW}}$ Generator for Lepton Colliders
• Determination of the pion generalized parton distributions at zero skewness
• Measurement of hadronic cross section and preliminary results on the pion form factor using the radiative return at DAPHNE
• CMD-2 and SND results on the rho, omega and phi
• Rho Meson Properties
• Confronting Spectral Functions from e+e- Annihilation and tau Decays: Consequences for the Muon Magnetic Moment
• OPE Constraints and the Leading Order Hadronic Contribution to (g-2)_mu
• Structure-dependent radiative corrections to $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\gamma$ in the GVMD approach