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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).

Authors :
Ignatov FV
Akhmetshin RR
Amirkhanov AN
Anisenkov AV
Aulchenko VM
Bashtovoy NS
Berkaev DE
Bondar AE
Bragin AV
Eidelman SI
Epifanov DA
Epshteyn LB
Erofeev AL
Fedotovich GV
Gorkovenko AO
Grancagnolo FJ
Grebenuk AA
Gribanov SS
Grigoriev DN
Ivanov VL
Karpov SV
Kasaev AS
Kazanin VF
Khazin BI
Kirpotin AN
Koop IA
Korobov AA
Kozyrev AN
Kozyrev EA
Krokovny PP
Kuzmenko AE
Kuzmin AS
Logashenko IB
Lukin PA
Lysenko AP
Mikhailov KY
Obraztsov IV
Okhapkin VS
Otboev AV
Perevedentsev EA
Pestov YN
Popov AS
Razuvaev GP
Rogovsky YA
Ruban AA
Ryskulov NM
Ryzhenenkov AE
Semenov AV
Senchenko AI
Shatunov PY
Shatunov YM
Shebalin VE
Shemyakin DN
Shwartz BA
Shwartz DB
Sibidanov AL
Solodov EP
Talyshev AA
Timoshenko MV
Titov VM
Tolmachev SS
Vorobiov AI
Yudin YV
Zemlyansky IM
Zhadan DS
Zharinov YM
Zubakin AS
Source :
Physical review letters [Phys Rev Lett] 2024 Jun 07; Vol. 132 (23), pp. 231903.
Publication Year :
2024

Abstract

The cross section of the process e^{+}e^{-}→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.

Details

Language :
English
ISSN :
1079-7114
Volume :
132
Issue :
23
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
38905689
Full Text :
https://doi.org/10.1103/PhysRevLett.132.231903