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ISSN - 00213640, EISSN - 10906487, JETP Letters, 2005, vol. 82, p. 743-747

Measurement of the pion form factor in the range 1.04-1.38 GeV with the CMD-2 detector

Aul'chenko V. M., Akhmetshin R. R., Banzarov V. Sh, Barkov L. M., Bashtovoǐ N. S., Bondarev D. V., Bondar' A. E., Bragin A. V., Valishev A. A., Gabyshev N. I., Gorbachev D. A., Grebenyuk A. A., Grigor'ev D. N., Dhawan S. K., Epifanov D. A., Zaǐtsev A. S., Zverev S. G., Ignatov F. V., Kazanin V. F., Karpov S. V., Koop I. A., Krokovny P. P., Kuz'min A. S., Logashenko I. B., Lukin P. A., Lysenko A. P., Mil'shteǐn A. I., Mikhaǐlov K. Yu, Nesterenko I. N., Nikulin M. A., Otboev A. V., Okhapkin V. S., Perevedentsev E. A., Polunin A. A., Popov A. S., Redin S. I., Roberts B. L., Root N. I., Ruban A. A., Ryskulov N. M., Sibidanov A. L., Sidorov V. A., Skrinsky A. N., Smakhtin V. P., Snopkov I. G., Solodov E. P., Thompson J. A., Fedotovich G. V., Khazin B. I., Hughes V. W., Shamov A. G., Shatunov Yu M., Shwartz B. A., Éǐdel'man S. I., Yudin Yu V.

The cross section for the process e+e- → π+π- is measured in the c.m. energy range 1.04-1.38 GeV by analyzing 995 000 selected collinear events including 860000 e +e- events, 82000 μ+μ- events, and 33000 π+π- events. The systematic and statistical errors of measuring the pion form factor are equal to 1.2-4.2 and 5-13%, respectively. © 2005 Pleiades Publishing, Inc.