Charge symmetry breaking in the A=4 hypernuclei

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F16%3A00463738" target="_blank" >RIV/61389005:_____/16:00463738 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.nuclphysa.2016.05.015" target="_blank" >http://dx.doi.org/10.1016/j.nuclphysa.2016.05.015</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nuclphysa.2016.05.015" target="_blank" >10.1016/j.nuclphysa.2016.05.015</a>

Result language
angličtina
Original language name
Charge symmetry breaking in the A=4 hypernuclei
Original language description
Charge symmetry breaking (CSB) in the Lambda-nucleon strong interaction generates a charge dependence of Lambda separation energies in mirror hypernuclei, which in the case of the A = 4 mirror hypernuclei 0(+) ground states is sizable, Delta B-Lambda(J=0) equivalent to B-Lambda(J=0) (He-4(Lambda)) - B-Lambda(J=0) (H-4(Lambda)) = 230 +/- 90 keV, and of opposite sign to that induced by the Coulomb repulsion in light hypernuclei. Recent ab initio calculations of the (H-4(Lambda), He-4(Lambda)) mirror hypernuclei 0(g.s.)(+) and 1(exc)(+) levels have demonstrated that a Lambda - Sigma(0) mixing CSB model due to Dalitz and von Hippel (1964) is capable of reproducing this large value of Delta B-Lambda(J=0). These calculations are discussed here with emphasis placed on the leading-order chiral EFT hyperon-nucleon Bonn-Julich strong-interaction potential model used and the no-core shell-model calculational scheme applied. The role of one-pion exchange in producing sizable CSB level splittings in the A = 4 mirror hypernuclei is discussed.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
<a href="/en/project/GA15-04301S" target="_blank" >GA15-04301S: Interactions of hadrons with nucleons and nuclei</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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