Kaonic hydrogen and deuterium in Hamiltonian effective field theory
نویسندگان
چکیده
منابع مشابه
Precision measurements on kaonic hydrogen and kaonic deuterium: DEAR and SIDDHARTA
The SIDDHARTA (SIlicon Drift Detector for Hadronic Atom Research by Timing Application) experiment [1] represents the scientific and technical development of DEAR (DAΦNE Exotic Atom Research) [2], as part of the program dedicated to exotic atoms at DAΦNE [3]. The objective consists in an eV precision measurement of the kaonic hydrogen Kα line shift and width induced by the strong interaction, a...
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Within the framework of a low-energy effective field theory we consider the procedure of extraction of the S-wave kaon–nucleon scattering lengths a0 and a1 from a combined fit to the kaonic hydrogen and kaonic deuterium data. It is demonstrated that, if the present DEAR central values for the kaonic hydrogen ground-state energy and width are used in the analysis of the data, a solution for a0 a...
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We argue that due to isospin and U–spin invariance of strong low–energy interactions the S–wave scattering lengths a0 and a 1 0 of K̄N scattering with isospin I = 0 and I = 1 satisfy the low–energy theorem a0 + 3a 1 0 = 0 valid to leading order in chiral expansion. In the model of strong low–energy K̄N interactions at threshold (EPJA 21,11 (2004)) we revisit the contribution of the Σ(1750) resona...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2020
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2020.135652