https://doi.org/10.1140/epja/i2011-11103-7
Regular Article - Theoretical Physics
Processes e+e− → π0(π0′) γ in extended NJL model
1
Bogoliubov Laboratory of Theoretical Physics, JINR, 141980, Dubna, Russia
2
Department of Higher Mathematics, University of Dubna, 141980, Dubna, Russia
* e-mail: arbuzov@theor.jinr.ru
Received:
16
June
2011
Revised:
27
July
2011
Accepted:
19
August
2011
Published online:
13
September
2011
The processes of electron-positron annihilation into π0γ and into π′(1300)γ are considered within an extended NJL model. The intermediate vector mesons ρ 0, ω ρ′(1450), and ω(1420) are taken into account. The latter two mesons are treated as the first radial excited states. They are incorporated into the NJL model by means of a polynomial form factor. Numerical predictions for the cross-sections of these processes are received for the center-of-mass energies below 2 GeV. Our results for the π0γ production are in agreement with experimental data obtained in the energy region 600–1020 MeV.
© SIF, Springer-Verlag Berlin Heidelberg, 2011
