Measurement of the e+ e- ---> pi+ pi- cross section with the CMD-2 detector in the 370 - 520-MeV c.m. energy range
Oct, 200611 pages
Published in:
- JETP Lett. 84 (2006) 413-417,
- Pisma Zh.Eksp.Teor.Fiz. 84 (2006) 491-495
e-Print:
- hep-ex/0610016 [hep-ex]
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Abstract: (arXiv)
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.Note:
- 11 pages, 4 figures
- 13.25
- 29.30
- 13.40.Gp
- 13.66
- electron positron: colliding beams
- electron positron: annihilation
- pi: pair production
- muon: pair production
- channel cross section: energy dependence
- pi: form factor
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