Study of the $$\boldsymbol{e^{+}e^{-}\rightarrow}{\pi}^{\boldsymbol{+}}{\pi}^{\boldsymbol{-}}{\pi}^{\mathbf{0}}$$ with the CMD-3 Detector at the VEPP-2000

We present preliminary results of the cross-section measurement of the $$e^{+}e^{-}\rightarrow\pi^{+}\pi^{-}\pi^{0}$$ process based on an integrated luminosity of about 51.4 pb $${}^{-1}$$ collected with the CMD-3 detector at the VEPP-2000 collider in the center-of-mass energy region below 1 GeV. A systematic uncertainty of the measurement is estimated as $$\sim 2.4\%$$ . The measured cross-section is analyzed in the framework of the vector meson dominance model taking into account an interference of the $$\rho,\omega,\phi,\omega^{\prime},\omega^{\prime\prime}$$ resonances. The preliminary parameters for the $$\omega$$ and $$\rho$$ resonances are obtained.

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Publication Details

Journal
Moscow University Physics Bulletin
Published
2024-12-01
DOI
https://doi.org/10.3103/s002713492470084x
Primary Topic
Particle physics theoretical and experimental studies
Type
article
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article

Study of the $$\boldsymbol{e^{+}e^{-}\rightarrow}{\pi}^{\boldsymbol{+}}{\pi}^{\boldsymbol{-}}{\pi}^{\mathbf{0}}$$ with the CMD-3 Detector at the VEPP-2000

S. S. Tolmachev
Moscow University Physics Bulletin
Particle physics theoretical and experimental studies
article

Study of the $$\boldsymbol{e^{+}e^{-}\rightarrow}{\pi}^{\boldsymbol{+}}{\pi}^{\boldsymbol{-}}{\pi}^{\mathbf{0}}$$ with the CMD-3 Detector at the VEPP-2000

S. S. Tolmachev
article en

Abstract

We present preliminary results of the cross-section measurement of the $$e^{+}e^{-}\rightarrow\pi^{+}\pi^{-}\pi^{0}$$ process based on an integrated luminosity of about 51.4 pb $${}^{-1}$$ collected with the CMD-3 detector at the VEPP-2000 collider in the center-of-mass energy region below 1 GeV. A systematic uncertainty of the measurement is estimated as $$\sim 2.4\%$$ . The measured cross-section is analyzed in the framework of the vector meson dominance model taking into account an interference of the $$\rho,\omega,\phi,\omega^{\prime},\omega^{\prime\prime}$$ resonances. The preliminary parameters for the $$\omega$$ and $$\rho$$ resonances are obtained.

Moscow University Physics BulletinVol. 79(S1)
Novosibirsk State University (RU), Budker Institute of Nuclear Physics (RU)
Openalex Percentile: Top 93%
Particle physics theoretical and experimental studies
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