Nuclear physics uncertainties in light hypernuclei
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00565015" target="_blank" >RIV/61389005:_____/22:00565015 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.106.054001" target="_blank" >https://doi.org/10.1103/PhysRevC.106.054001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.106.054001" target="_blank" >10.1103/PhysRevC.106.054001</a>
Alternative languages
Result language
angličtina
Original language name
Nuclear physics uncertainties in light hypernuclei
Original language description
The energy levels of light hypernuclei are experimentally accessible observables that contain valuable information about the interaction between hyperons and nucleons. In this work we study strangeness S = -1 systems H-3,4(Lambda) and He-4,5(Lambda) using the ab initio no-core shell model (NCSM) with realistic interactions obtained from chiral effective field theory (chi EFT). In particular, we quantify the finite precision of theoretical predictions that can be attributed to nuclear physics uncertainties. We study both the convergence of the solution of the many-body problem (method uncertainty) and the regulator and calibration-data dependence of the nuclear chi EFT Hamiltonian (model uncertainty). For the former, we implement infrared correction formulas and extrapolate finite-space NCSM results to infinite model space. We then use Bayesian parameter estimation to quantify the resulting method uncertainties. For the latter, we employ a family of 42 realistic Hamiltonians and measure the standard deviation of predictions while keeping the leading-order hyperon-nucleon interaction fixed. Following this procedure we find that model uncertainties of ground-state Lambda separation energies amount to approximate to 20 (100) keV in H-3(Lambda) (H-4(Lambda), He) and approximate to 400 keV in He-5(Lambda). Method uncertainties are comparable in magnitude for the H-4(Lambda), He 1(+) excited states and He-5(Lambda), which are computed in limited model spaces, but otherwise are much smaller. This knowledge of expected theoretical precision is crucial for the use of binding energies of light hypernuclei to infer the elusive hyperon-nucleon interaction.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review C
ISSN
2469-9985
e-ISSN
2469-9993
Volume of the periodical
106
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
054001
UT code for WoS article
000887074200001
EID of the result in the Scopus database
2-s2.0-85142069846