Kaon-nucleon scattering lengths from kaonic deuterium experiments revisited
M. D\"oring, U.-G. Mei{\ss}ner
TL;DR
This paper revisits the kaon-nucleon scattering lengths using recent kaonic hydrogen data, providing updated predictions for the kaon-deuteron scattering length within a non-relativistic effective field theory framework.
Contribution
It offers a new analysis of kaon-deuteron scattering lengths incorporating recent experimental data, refining theoretical predictions with estimated uncertainties.
Findings
Predicted kaon-deuteron scattering length: (-1.46 + i 1.08) fm
Uncertainty in the prediction is approximately 25%
Analysis is based solely on KN scattering data
Abstract
We analyse the impact of the recent measurement of kaonic hydrogen X rays by the SIDDHARTA collaboration on the allowed ranges for the kaon-deuteron scattering length in the framework of non-relativistic effective field theory. Based on data from KN scattering only, we predict the kaon-deuteron scattering length A_Kd= (-1.46 + i 1.08) fm, with an estimated uncertainty of about 25% in both the real and the imaginary part.
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