https://doi.org/10.1140/epjcd/s2004-03-1613-4
PS07 Tests of the Standard Model
Determination of σ(e + e –→ π + π –) from radiative processes at DAΦNE
Istituto Nazionale di Fisica Nucleare (INFN) – Sezione di Pisa, Italy
Received:
17
October
2003
Accepted:
14
January
2004
Published online:
3
February
2004
We have measured the cross section σ(e
+
e
–→π
+
π
–
γ) with the KLOE detector at DAΦNE, at an energy W=M
φ
=1.02 GeV. From the dependence of the cross section on 
, where E
γ
is the energy of the photon radiated from the initial state, we extract σ(e
+
e
–→π
+
π
–) for the mass range 0.35<m
2(π
+
π
–)<0.95 GeV2. From our result we extract the pion form factor and the hadronic contribution to the muon anomaly, a
μ
.
© Società Italiana di Fisica, Springer-Verlag, 2004
