We study the process e +e -→π +π -π +π -γ, with a photon emitted from the initial-state electron or positron, using 454.3fb -1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260000 signal events. We use these data to extract the nonradiative σ(e +e -→π +π -π +π -) cross section in the energy range from 0.6 to 4.5 GeV. The total uncertainty of the cross section measurement in the peak region is less than 3%, higher in precision than the corresponding results obtained from energy scan data.
Titolo: | Initial-state radiation measurement of the e^{+}e^{-}→π^{+}π^{-}π^{+}π^{-} cross section |
Autori: | |
Data di pubblicazione: | 2012 |
Rivista: | |
Abstract: | We study the process e +e -→π +π -π +π -γ, with a photon emitted from the initial-state electron or positron, using 454.3fb -1 of data collected with the BABAR detector at SLAC, corresponding to approximately 260000 signal events. We use these data to extract the nonradiative σ(e +e -→π +π -π +π -) cross section in the energy range from 0.6 to 4.5 GeV. The total uncertainty of the cross section measurement in the peak region is less than 3%, higher in precision than the corresponding results obtained from energy scan data. |
Handle: | http://hdl.handle.net/11368/2767737 |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevD.85.112009 |
Appare nelle tipologie: | 1.1 Articolo in Rivista |
File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.