Constraining the K¯N interaction from the 1S level shift of kaonic deuterium
| Autor: | Tetsuo Hyodo, Shota Ohnishi, W. Horiuchi, Wolfram Weise, Tsubasa Hoshino |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Hydrogen 010308 nuclear & particles physics Kaonic hydrogen chemistry.chemical_element 01 natural sciences Schrödinger equation Nuclear physics Many-body problem symbols.namesake Deuterium chemistry Isospin 0103 physical sciences symbols Effective field theory 010306 general physics Hamiltonian (quantum mechanics) |
| Zdroj: | Physical Review C. 96 |
| ISSN: | 2469-9993 2469-9985 |
| Popis: | Motivated by the precise measurement of the 1S level shift of kaonic hydrogen, we perform accurate three-body calculations for the spectrum of kaonic deuterium using a realistic antikaon-nucleon (K¯N) interaction. In order to describe both short- and long-range behaviors of the kaonic atomic states, we solve the three-body Schrodinger equation with a superposition of a large number of correlated Gaussian basis functions covering distances up to several hundreds of fm. Transition energies between 1S,2P, and 2S states are determined with high precision. The complex energy shift of the 1S level of kaonic deuterium is found to be ΔE−iΓ/2=(670−i508) eV. The sensitivity of this level shift with respect to the isospin I=1 component of the K¯N interaction is examined. It is pointed out that an experimental determination of the kaonic deuterium level shift within an uncertainty of 25% will provide a constraint for the I=1 component of the K¯N interaction significantly stronger than that from kaonic hydrogen. |
| Databáze: | OpenAIRE |
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