Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range

R. R. Akhmetshin; V. M. Aulchenko; V. Sh. Banzarov; L. M. Barkov; N. S. Bashtovoy; A. E. Bondar; D. V. Bondarev; A. V. Bragin; S. K. Dhawan; S. I. Eidelman; D. A. Epifanov; G. V. Fedotovich; N. I. Gabyshev; D. A. Gorbachev; A. A. Grebenuk; D. N. Grigoriev; V. W. Hughes; F. V. Ignatov; S. V. Karpov; V. F. Kazanin; B. I. Khazin; I. A. Koop; P. P. Krokovny; A. S. Kuzmin; I. B. Logashenko; P. A. Lukin; A. P. Lysenko; K. Yu. Mikhailov; A. I. Milshtein; I. N. Nesterenko; M. A. Nikulin; V. S. Okhapkin; A. V. Otboev; E. A. Perevedentsev; A. S. Popov; S. I. Redin; B. L. Roberts; N. I. Root; A. A. Ruban; N. M. Ryskulov; A. G. Shamov; Yu. M. Shatunov; B. A. Shwartz; A. L. Sibidanov; V. A. Sidorov; A. N. Skrinsky; V. P. Smakhtin; I. G. Snopkov; E. P. Solodov; J. A. Thompson; Yu. V. Yudin; A. S. Zaitsev; S. G. Zverev

doi:10.1134/s0021364006200021

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Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range

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Abstract

The cross section of the process e+e- -> pi+pi- has been measured at the CMD-2 detector in the 370-520 MeV center-of-mass (c.m.) energy range. A systematic uncertainty of the measurement is 0.7 %. Using all CMD-2 data on the pion form factor, the pion electromagnetic radius was calculated. The cross section of muon pair production was also determined.

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R. R. Akhmetshin, V. M. Aulchenko, V. Sh. Banzarov, L. M. Barkov, N. S. Bashtovoy, A. E. Bondar, D. V. Bondarev, A. V. Bragin, S. K. Dhawan, S. I. Eidelman, D. A. Epifanov, G. V. Fedotovich, N. I. Gabyshev, D. A. Gorbachev, A. A. Grebenuk, D. N. Grigoriev, V. W. Hughes, F. V. Ignatov, S. V. Karpov, V. F. Kazanin, B. I. Khazin, I. A. Koop, P. P. Krokovny, A. S. Kuzmin, I. B. Logashenko, P. A. Lukin, A. P. Lysenko, K. Yu. Mikhailov, A. I. Milshtein, I. N. Nesterenko, M. A. Nikulin, V. S. Okhapkin, A. V. Otboev, E. A. Perevedentsev, A. S. Popov, S. I. Redin, B. L. Roberts, N. I. Root, A. A. Ruban, N. M. Ryskulov, A. G. Shamov, Yu. M. Shatunov, B. A. Shwartz, A. L. Sibidanov, V. A. Sidorov, A. N. Skrinsky, V. P. Smakhtin, I. G. Snopkov, E. P. Solodov, J. A. Thompson, Yu. V. Yudin, A. S. Zaitsev, S. G. Zverev. 2006-10-06. Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range. https://doi.org/10.1134/s0021364006200021

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