Topic
Kaonic hydrogen
About: Kaonic hydrogen is a research topic. Over the lifetime, 178 publications have been published within this topic receiving 3813 citations.
Papers published on a yearly basis
Papers
TL;DR: In this paper, a complete expression for the isospin-breaking corrections to the energy levels and the decay widths of kaonic hydrogen is obtained up to and including O(alpha,m_d-m_u) in QCD.
Abstract: By using the non-relativistic effective Lagrangian approach to bound states, a complete expression for the isospin-breaking corrections to the energy levels and the decay widths of kaonic hydrogen is obtained up-to-and-including O(alpha,m_d-m_u) in QCD. It is demonstrated that, although the leading-order corrections at O(alpha^{1/2},(m_d-m_u)^{1/2}) emerging due to the unitarity cusp, are huge, they can be expressed solely in terms of the KN S-wave scattering lengths. Consequently, at leading order, it is possible to derive parameter-free modified Deser-type relations, which can be used to extract the scattering lengths from the hadronic atom data.
134 citations
TL;DR: Low energy KN interactions are studied within unitary chiral perturbation theory at next-to-leading order with ten coupled channels to find two classes of solutions, both of them reproducing previous data, that either can or cannot accommodate the DEAR measurements.
Abstract: Low energy KN interactions are studied within unitary chiral perturbation theory at next-to-leading order with ten coupled channels. We pay special attention to the recent precise determination of the strong shift and width of the kaonic hydrogen 1s state by the DEAR Collaboration that has challenged our theoretical understanding of this sector of strong interactions. We typically find two classes of solutions, both of them reproducing previous data, that either can or cannot accommodate the DEAR measurements. The former class has not been previously discussed.
121 citations
TL;DR: In this article, a special liquid-hydrogen target was used with a stopping kaon beam in order to search for the X-rays from kaonic hydrogen atoms, and a peak at 6.52 ± 0.06 keV was observed with a yield of about 0.1%.
111 citations
TL;DR: In this article, the strong interaction shift of the kaonic 4He 2p state was determined to be 0 ± 6 (stat) ± 2 (syst) eV, which confirmed the recently obtained result by the KEK-PS E570 group.
102 citations
TL;DR: In this article, the authors measured the Balmer-series x-rays of kaonic 4 He atoms using novel large-area silicon drift x-ray detectors in order to study the low-energy K ¯ -nucleus strong interaction.
99 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2020 | 4 |
| 2019 | 7 |
| 2018 | 4 |
| 2017 | 3 |
| 2016 | 3 |