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Improved Threshold Constraints on Coupled-Channels Chiral SU(3) Dynamics from Kaonic Hydrogen |
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| Authors: | Yoichi Ikeda Tetsuo Hyodo Wolfram Weise |
| Institution: | 1. RIKEN Nishina Center, 2-1, Hirosawa, Wako, Saitama, 351-0198, Japan 2. Department of Physics, Tokyo Institute of Technology, Tokyo, Meguro, 152-8551, Japan 3. Physik-Department, Technische Universit?t München, 85747, Garching, Germany 4. ECT*, Villa Tambosi, I-38123, Villazzano (Trento), Italy |
| Abstract: | ${\bar{K}}$ -nucleon interactions near threshold are investigated in the framework of 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. This constraint permits an updated analysis of the complex ${\bar{K}N}$ and πΣ coupled-channels amplitudes. |
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