Measurement of the e+e-→ π+π-π0 Cross Section in the Energy Range √s = 760 – 798 MeV with CMD-3 Detector Based on Data from the Tracking System and Its Contribution to the Muon (g – 2) Hadronic Term
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2025
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| _version_ | 1866902125503578112 |
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| author | Shoukavy, Dz. V. Vasileuskaya, D. S. Fedotovich, G. V. Grigoriev, D. N. Ryzhenenkov, A. E. Tolmachev, S. S. |
| author_facet | Shoukavy, Dz. V. Vasileuskaya, D. S. Fedotovich, G. V. Grigoriev, D. N. Ryzhenenkov, A. E. Tolmachev, S. S. |
| contents | <p>The cross section of the process e<sup>+</sup>e<sup>-</sup>→ π<sup>+</sup>π<sup>-</sup>π<sup>0</sup> has been measured with the Cryogenic Magnetic Detector (CMD-3) at the electron-positron collider VEPP-2000. The measurement is based on data samples that were collected in the center-of-mass energy range √s = 760 – 798 MeV corresponding to an integrated luminosity of <em>L</em><sub>int</sub> = 18:4 pb<sup>−1</sup>, covering the kinematic region of the ω(782) isoscalar resonance. The total systematic uncertainty of the cross section measurement is about 2%, dominated by the luminosity determination uncertainty of 1.5%. The results are compared with the previous most precise measurements from experiments. The measured cross section is used to evaluate the leading-order hadronic vacuum polarization contribution of the 3π channel to the muon anomalous magnetic moment (<em>a</em><sub>μ</sub><sup>3π</sup>:).</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_17949372 |
| institution | Zenodo |
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| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Measurement of the e+e-→ π+π-π0 Cross Section in the Energy Range √s = 760 – 798 MeV with CMD-3 Detector Based on Data from the Tracking System and Its Contribution to the Muon (g – 2) Hadronic Term Shoukavy, Dz. V. Vasileuskaya, D. S. Fedotovich, G. V. Grigoriev, D. N. Ryzhenenkov, A. E. Tolmachev, S. S. process e+e-→ π+π-π0, Born cross section, CMD-3 detector, muon anomalous magnetic moment <p>The cross section of the process e<sup>+</sup>e<sup>-</sup>→ π<sup>+</sup>π<sup>-</sup>π<sup>0</sup> has been measured with the Cryogenic Magnetic Detector (CMD-3) at the electron-positron collider VEPP-2000. The measurement is based on data samples that were collected in the center-of-mass energy range √s = 760 – 798 MeV corresponding to an integrated luminosity of <em>L</em><sub>int</sub> = 18:4 pb<sup>−1</sup>, covering the kinematic region of the ω(782) isoscalar resonance. The total systematic uncertainty of the cross section measurement is about 2%, dominated by the luminosity determination uncertainty of 1.5%. The results are compared with the previous most precise measurements from experiments. The measured cross section is used to evaluate the leading-order hadronic vacuum polarization contribution of the 3π channel to the muon anomalous magnetic moment (<em>a</em><sub>μ</sub><sup>3π</sup>:).</p> |
| title | Measurement of the e+e-→ π+π-π0 Cross Section in the Energy Range √s = 760 – 798 MeV with CMD-3 Detector Based on Data from the Tracking System and Its Contribution to the Muon (g – 2) Hadronic Term |
| topic | process e+e-→ π+π-π0, Born cross section, CMD-3 detector, muon anomalous magnetic moment |
| url | https://doi.org/10.5281/zenodo.17949372 |