https://doi.org/10.1140/epjc/s10052-017-5038-8
Regular Article - Theoretical Physics
The K-meson form factor and charge radius: linking low-energy data to future Jefferson Laboratory measurements
1
Samara University, 443086, Samara, Russia
2
Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary Prospect 7a, Moscow, 117312, Russia
3
D.V. Skobeltsyn Institute of Nuclear Physics, M.V. Lomonosov Moscow State University, Moscow, 119991, Russia
* e-mail: st@ms2.inr.ac.ru
Received:
1
April
2017
Accepted:
29
June
2017
Published online:
12
July
2017
Starting from a successful model of the 
-meson electromagnetic form factor, we calculate a similar form factor, 
, of the charged K meson for a wide range of the momentum transfer squared, 
. The only remaining free parameter is to be determined from the measurements of the K-meson charge radius, 
. We fit this single parameter to the published data of the NA-7 experiment which measured at 
and determine our preferred range of , which happens to be close to recent lattice results. Still, the accuracy in the determination of is poor. However, future measurements of the K-meson electromagnetic form factor at 
GeV
, scheduled in Jefferson Laboratory for 2017, will test our approach and will reduce the uncertainty in significantly.
© The Author(s), 2017
