Measurement of the energy dependence of the form-factor f(+) in K0(e3) decay.

The CPLEAR collaboration Apostolakis, A. ; Aslanides, E. ; Backenstoss, G. ; et al.
Phys.Lett.B 473 (2000) 186-192, 2000.
Inspire Record 513277 DOI 10.17182/hepdata.49003

Neutral-kaon decays to π e ν were analysed to determine the q 2 dependence of the K 0 e3 electroweak form factor f + . Based on 365 612 events, this form factor was found to have a linear dependence on q 2 with a slope λ + =0.0245±0.0012 stat ±0.0022 syst .

1 data table

The Q2 dependence of FORMFACTOR+ is usually approximated as: FORMFACTOR+(Q2) = CONST * ( 1 + Q2 * CONST(NAME=LAMBDA+)/M(C=PI)**2).