Measurement of e+e- -> pi+pi- cross section with CMD-2 around rho(770) meson
| dc.creator | 2 collaboration | |
| dc.date | 1999-04-26 | |
| dc.date.accessioned | 2026-07-07T03:37:53Z | |
| dc.date.available | 2026-07-07T03:37:53Z | |
| dc.description | In experiments with the CMD-2 detector at the VEPP-2M electron-positron collider at Novosibirsk about 150000 $e^+e^-\toπ^+π^-$ events were recorded in the center-of-mass energy range from 0.61 up to 0.96 GeV. The result of the pion form factor measurement with a 1.4% systematic error is presented. The following values of the $ρ$-meson and $ρ-ω$ interference parameters were found: $M_ρ=(775.28\pm 0.61\pm 0.20) MeV, Γ_ρ=(147.70\pm 1.29 \pm 0.40) MeV, Γ(ρ\to e^+e^-)=(6.93\pm 0.11\pm 0.10) keV, Br(ω\toπ^+π^-) = (1.32\pm 0.23)%$. | |
| dc.description | 52 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9904027 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9904027 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/38299 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of e+e- -> pi+pi- cross section with CMD-2 around rho(770) meson | |
| dc.type | text |