Kaonic deuterium and low-energy antikaon-nucleon interaction

Abstract

A new evaluation of the $1s$ level shift and width of kaonic deuterium is presented based on an accurate $\bar{K}NN$ 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 $E\simeq 0.67$ keV and $\Gamma \simeq 1.02$ keV, with estimated uncertainties at the 10% level.

9 pages, 2 figures, based on the talk presented at the EXA2017 conference

References in corpus (8)

• $K^{-}pp$ system with chiral SU(3) effective interaction
• Realistic calculations of Kbar-N-N, Kbar-N-N-N, and Kbar-Kbar-N-N quasibound states
• Global-Vector Representation of the Angular Motion of Few-Particle Systems II
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