Measurement of the Pion Form Factor with CMD-3 Detector and its Implication to the Hadronic Contribution to Muon (<math display="inline"><mrow><mi>g</mi><mo>-</mo><mn>2</mn></mrow></math>) - INSPIRE

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Measurement of the Pion Form Factor with CMD-3 Detector and its Implication to the Hadronic Contribution to Muon ( $g - 2$ )

CMD-3

Collaboration

•

F.V. Ignatov
(
- Novosibirsk, IYF and
- Novosibirsk State U.
)

Sep 22, 2023

8 pages

Published in:

Phys.Rev.Lett. 132 (2024) 23, 231903

Published: Jun 4, 2024

e-Print:

2309.12910 [hep-ex]

DOI:

10.1103/PhysRevLett.132.231903 (publication)

Experiments:

NOVOSIBIRSK-CMD-3

View in:

ADS Abstract Service

reference search77 citations

Citations per year

Abstract: (APS)

The cross section of the process

e^{+} e^{-} \to π^{+} π^{-}

has been measured in the center-of-mass energy range from 0.32 to 1.2 GeV with the CMD-3 detector at the electron-positron collider VEPP-2000. The measurement is based on an integrated luminosity of about

88 {pb}^{- 1}

, of which

62 {pb}^{- 1}

represent a complete dataset collected by CMD-3 at center-of-mass energies below 1 GeV. In the dominant region near the

ρ

resonance a systematic uncertainty of 0.7% was achieved. The implications of the presented results for the evaluation of the hadronic contribution to the anomalous magnetic moment of the muon are discussed.

Note:

8 pages, 3 figures; as published in Phys. Rev. Lett. 132, 231903

electron positron: annihilation
electron positron: colliding beams
pi: pair production
muon: magnetic moment
anomaly
pi: form factor
Novosibirsk VEPP-2000
channel cross section: measured
experimental results
electron positron --> pi pi-

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