Nature of the Lambda nn(J(pi)=1/2(+), I=1) and H-3(Lambda)*(J(pi)=3/2(+), I=0) states

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00541433" target="_blank" >RIV/61389005:_____/21:00541433 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/21:00352356
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.103.025204" target="_blank" >https://doi.org/10.1103/PhysRevC.103.025204</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.103.025204" target="_blank" >10.1103/PhysRevC.103.025204</a>

Result language
angličtina
Original language name
Nature of the Lambda nn(J(pi)=1/2(+), I=1) and H-3(Lambda)*(J(pi)=3/2(+), I=0) states
Original language description
The nature of the Lambda nn and H-3(Lambda)*(J(pi) = 3/2(+), I = 0) states is investigated within a pionless effective field theory at leading order, constrained by the low-energy Lambda N scattering data and hypernuclear three- and four-body data. Bound-state solutions are obtained using the stochastic variational method, and the continuum region is studied by employing two independent methods: the inverse analytic continuation in the coupling constant method and the complex scaling method. Our calculations yield both the Lambda nn and(Lambda)( 3)H* states unbound. We conclude that the excited state(Lambda)( 3)H* is a virtual state and the Lambda nn pole located close to the three-body threshold in a complex energy plane could convert to a true resonance with Re(E) > 0 for some considered Lambda N interactions. Finally, the stability of resonance solutions is discussed and limits of the accuracy of performed calculations are assessed.
Czech name
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Czech description
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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
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
<a href="/en/project/GA19-19640S" target="_blank" >GA19-19640S: Study of Hadron Interactions, Production and Bound States</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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