https://doi.org/10.1051/epjconf/201818101006
Kaonic deuterium and low-energy antikaon-nucleon interaction
1
Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
2
Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
3
Physics Department, Technical University of Munich, 85748 Garching, Germany
* e-mail: whoriuchi@nucl.sci.hokudai.ac.jp
** e-mail: hyodo@yukawa.kyoto-u.ac.jp
*** e-mail: weise@tum.de
Published online: 25 June 2018
A new evaluation of the 1s level shift and width of kaonic deuterium is presented based on an accurate K̅ NN three-body calculation, using as input a realistic antikaon-nucleon interaction constrained by the SIDDHARTA kaonic hydrogen data. The three-body Schrödinger equation is solved with a superposition of a large number of correlated Gaussian basis functions extending over distance scales up to several hundred fm. The resulting energy shift and width of the kaonic deuterium 1s level are △E ≃ 0:67 keV and Γ ≃ 1.02 keV, with estimated uncertainties at the 10 % level.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
