A new improved study of K--proton interactions near threshold is performed using coupled-channels dynamics based on the next-to-leading order chiral SU(3) meson-baryon effective Lagrangian. Accurate constraints are now provided by new high-precision kaonic hydrogen measurements. Together with threshold branching ratios and scattering data, these constraints permit an updated analysis of the complex KN and πσ coupled-channels amplitudes and an improved determination of the K-p scattering length, including uncertainty estimates.
|Number of pages||5|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|Publication status||Published - Nov 30 2011|
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics