RT Journal Article
T1 Radiative corrections to the forward-backward asymmetry in e(+)e(-) -> pi(+)pi(-)
A1 Colangelo, Gilberto
A1 Hoferichter, Matín
A1 Monnard, Joachim
A1 Ruiz De Elvira Carrascal, Jacobo
AB We present a calculation of the C-odd radiative corrections to e(+)e(-) -> pi(+)pi(-) in a dispersive formalism, concentrating on the leading pion-pole contribution in the virtual box diagrams. In particular, we show how the effect of a general pion vector form factor in the loop integral can be incorporated in a model-independent way and how the cancellation of infrared singularities proceeds in this case. The numerical results, dominated by the infrared enhanced contributions, indicate significant corrections beyond scalar QED, essentially confirming recent findings in generalized vector-meson-dominance models.
PB Springer
SN 1029-8479
YR 2022
FD 2022-08-30
LK https://hdl.handle.net/20.500.14352/73057
UL https://hdl.handle.net/20.500.14352/73057
LA eng
NO Swiss National Science Foundation (SNSF)
NO Programa Ramón y Cajal
NO Ministerio de Asuntos Económicos y Transformación Digital de España
DS Docta Complutense
RD 13 abr 2025