학술논문
Measurement of the pion form factor with CMD-3 detector and its implication to the hadronic contribution to muon (g-2)
Document Type
Working Paper
Author
Collaboration, CMD-3; Ignatov, F. V.; Akhmetshin, R. R.; Amirkhanov, A. N.; Anisenkov, A. V.; Aulchenko, V. M.; Bashtovoy, N. S.; Berkaev, D. E.; Bondar, A. E.; Bragin, A. V.; Eidelman, S. I.; Epifanov, D. A.; Epshteyn, L. B.; Erofeev, A. L.; Fedotovich, G. V.; Gorkovenko, A. O.; Grancagnolo, F. J.; Grebenuk, A. A.; Gribanov, S. S.; Grigoriev, D. N.; Ivanov, V. L.; Karpov, S. V.; Kasaev, A. S.; Kazanin, V. F.; Khazin, B. I.; Kirpotin, A. N.; Koop, I. A.; Korobov, A. A.; Kozyrev, A. N.; Kozyrev, E. A.; Krokovny, P. P.; Kuzmenko, A. E.; Kuzmin, A. S.; Logashenko, I. B.; Lukin, P. A.; Lysenko, A. P.; Mikhailov, K. Yu.; Obraztsov, I. V.; Okhapkin, V. S.; Otboev, A. V.; Perevedentsev, E. A.; Pestov, Yu. N.; Popov, A. S.; Razuvaev, G. P.; Rogovsky, Yu. A.; Ruban, A. A.; Ryskulov, N. M.; Ryzhenenkov, A. E.; Semenov, A. V.; Senchenko, A. I.; Shatunov, P. Yu.; Shatunov, Yu. M.; Shebalin, V. E.; Shemyakin, D. N.; Shwartz, B. A.; Shwartz, D. B.; Sibidanov, A. L.; Solodov, E. P.; Talyshev, A. A.; Timoshenko, M. V.; Titov, V. M.; Tolmachev, S. S.; Vorobiov, A. I.; Yudin, Yu. V.; Zemlyansky, I. M.; Zhadan, D. S.; Zharinov, Yu. M.; Zubakin, A. S.
Source
Phys. Rev. Lett. 132, 231903 (2024)
Subject
Language
Abstract
The cross section of the process $e^+e^-\to\pi^+\pi^-$ 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 $\rho$ 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.
Comment: 8 pages, 3 figures; as published in Phys. Rev. Lett. 132, 231903
Comment: 8 pages, 3 figures; as published in Phys. Rev. Lett. 132, 231903