ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2015, vol. 91, 5, p. -
Measurement of the e+e- →ηπ+π- cross section in the center-of-mass energy range 1.22-2.00 GeV with the SND detector at the VEPP-2000 collider
© 2015 American Physical Society. In the experiment with the SND detector at the VEPP-2000 e+e- collider the cross section for the process e+e-→ηπ+π- has been measured in the center-of-mass energy range from 1.22 to 2.00 GeV. Obtained results are in agreement with previous measurements and have better accuracy. The energy dependence of the e+e-→ηπ+π- cross section has been fitted with the vector-meson dominance model. From this fit the product of the branching fractions B(ρ(1450)→ηπ+π-)B(ρ(1450)→e+e-) has been extracted and compared with the same products for ρ(1450)→ωπ0 and ρ(1450)→π+π- decays. The obtained cross section data have been also used to test the conservation of vector current hypothesis.