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Updated measurement of the $e^+e^- \to \omega \pi^0 \to \pi^0\pi^0\gamma$ cross section with the SND detector

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arxiv 1610.00235 v2 pith:NQNBDXCC submitted 2016-10-02 hep-ex

M.N.Achasov , A.Yu.Barnyakov , K.I.Beloborodov , A.V.Berdyugin , D.E.Berkaev , A.G.Bogdanchikov , A.A.Botov , T.V.Dimova
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V.P.Druzhinin V.B.Golubev L.V.Kardapoltsev A.S.Kasaev A.G.Kharlamov A.N.Kirpotin D.P.Kovrizhin I.A.Koop A.A.Korol S.V.Koshuba K.A.Martin A.E.Obrazovsky E.V.Pakhtusova Yu.A.Rogovsky A.I.Senchenko S.I.Serednyakov Z.K.Silagadze Yu.M.Shatunov D.A.Shtol D.B.Shwartz A.N.Skrinsky I.K.Surin A.V.Vasiljev
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classification hep-ex
keywords crossmeasurementomegasectiondatadetectorgammaupdated
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We analyze a 37 pb$^{-1}$ data sample collected with the SND detector at the VEPP-2000 $e^+e^-$ collider in the center-of-mass energy range 1.05--2.00 GeV and present an updated measurement of the $e^+e^- \to \omega \pi^0 \to \pi^0\pi^0\gamma$ cross section. In particular, we correct the mistake in radiative correction calculation made in our previous measurement based on a part of the data. The measured cross section is fitted with the vector meson dominance model with three $\rho$-like states and used to test the conserved vector current hypothesis in the $\tau^-\to\omega\pi^-\nu_{\tau}$ decay.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Dispersive analysis of the $J/\psi\to\pi^0 \gamma^\ast$ transition form factor with $\rho$-$\omega$ mixing effects

    hep-ph 2025-11 unverdicted novelty 7.0 of 10

    Dispersive analysis with ρ-ω mixing produces a two-parameter fit describing BESIII data on the J/ψ→π⁰γ* form factor from 0 to 2.8 GeV and extracts a (62 ± 21)° relative phase between strong and electromagnetic modes.

  2. Amplitude Analysis of $\omega\pi^0$ Photoproduction at GlueX

    nucl-ex 2024-11 conditional novelty 4.0 of 10

    Preliminary GlueX analysis of gamma p -> omega pi0 p reports a dominant b1(1235) amplitude and phase motion consistent with interference from an excited 1-- vector resonance.

  3. A study of the corrections to factorization in $\bar{B}^0 \to D^{* +} \omega \pi^-$

    hep-ph 2019-08 conditional novelty 4.0 of 10

    A comparison of the omega-pi form factor from B meson decays with e+e- and tau data finds no statistically significant deviation from QCD factorization in the color-favored channel.

  4. The anomalous magnetic moment of the muon in the Standard Model

    hep-ph 2020-06 accept novelty 2.0 of 10

    The Standard Model value for the muon anomalous magnetic moment is 116591810(43)×10^{-11}, 3.7σ below the Brookhaven experimental measurement.

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