TY - JOUR
T1 - Improved constraints on chiral SU(3) dynamics from kaonic hydrogen
AU - Ikeda, Yoichi
AU - Hyodo, Tetsuo
AU - Weise, Wolfram
N1 - Funding Information:
We thank Avraham Gal for helpful comments and discussions. This work has been performed under the joint research cooperation agreement between RIKEN and Technische Universität München. It is partly supported by BMBF , GSI , the DFG Cluster of Excellence “Origin and Structure of the Universe”, and by the Grant-in-Aid for Scientific Research from MEXT and JSPS (Nos. 21840026 and 23-8687 ). T.H. thanks for support from the Global Center of Excellence Program by MEXT , Japan, through the Nanoscience and Quantum Physics Project of the Tokyo Institute of Technology.
PY - 2011/11/30
Y1 - 2011/11/30
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physletb.2011.10.068
DO - 10.1016/j.physletb.2011.10.068
M3 - Article
AN - SCOPUS:81255172911
SN - 0370-2693
VL - 706
SP - 63
EP - 67
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1
ER -