Systematic Nuclear Uncertainties in the Hypertriton System

0545942 - ÚJF 2022 RIV AT eng J - Článek v odborném periodiku
Htun, T. Y. - Gazda, Daniel - Forssen, C. - Yan, YP.
Systematic Nuclear Uncertainties in the Hypertriton System.
Few-Body Systems. Roč. 62, č. 4 (2021), č. článku 94. ISSN 0177-7963. E-ISSN 1432-5411
Grant CEP: GA ČR GA19-19640S
Institucionální podpora: RVO:61389005
Klíčová slova: nucleon nucleon interactions * hyperon nucleon interaction * scale
Obor OECD: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impakt faktor: 1.844, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.1007/s00601-021-01675-4

The hypertriton bound state is relevant for inference of knowledge about the hyperon-nucleon (YN) interaction. In this work we compute the binding energy of the hypertriton using the ab initio hypernuclear no-core shell model (NCSM) with realistic interactions derived from chiral effective field theory. In particular, we employ a large family of nucleon-nucleon interactions with the aim to quantify the theoretical precision of predicted hypernuclear observables arising from nuclear-physics uncertainties. The three-body calculations are performed in a relative Jacobi-coordinate harmonic oscillator basis and we implement infrared correction formulas to extrapolate the NCSM results to infinite model space. We find that the spread of the predicted hypertriton binding energy, attributed to the nuclear-interaction model uncertainty, is about 100 keV. In conclusion, the sensitivity of the hypertriton binding energy to nuclear-physics uncertainties is of the same order of magnitude as experimental uncertainties such that this bound-state observable can be used in the calibration procedure to constrain the YN interactions.
Trvalý link: http://hdl.handle.net/11104/0322545