The onset of Lambda Lambda hypernuclear binding
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00509906" target="_blank" >RIV/61389005:_____/19:00509906 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68407700:21340/19:00334864
Výsledek na webu
<a href="https://doi.org/10.1016/j.physletb.2019.134893" target="_blank" >https://doi.org/10.1016/j.physletb.2019.134893</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2019.134893" target="_blank" >10.1016/j.physletb.2019.134893</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
The onset of Lambda Lambda hypernuclear binding
Popis výsledku v původním jazyce
Binding energies of light, A <= 6, Lambda Lambda hypernuclei are calculated using the stochastic variational method in a pionless effective field theory ((sic)pEFT) approach at leading order with the purpose of assessing critically the onset of binding in the strangeness S = -2 hadronic sector. The (sic)EFT input in this sector consists of (i) a Lambda Lambda contact term constrained by the Lambda Lambda scattering length a(Lambda Lambda), using a range of values compatible with Lambda Lambda correlations observed in relativistic heavy ion collisions, and (ii) a Lambda Lambda N contact term constrained by the only available A <= 6 Lambda Lambda hypernucler binding energy datum of He-6(Lambda Lambda). The recently debated neutral three-body and four-body systems (3)(Lambda Lambda)n and (4)(Lambda Lambda)n are found unbound by a wide margin. A relatively large value of vertical bar a(Lambda Lambda)vertical bar greater than or similar to 1.5 fm is needed to bind H-4(Lambda Lambda), thereby questioning its particle stability. In contrast, the particle stability of the A = 5 Lambda Lambda hypernuclear isodoublet H-5(Lambda Lambda)-He-5(Lambda Lambda) is robust, with Lambda separation energy of order 1 MeV.
Název v anglickém jazyce
The onset of Lambda Lambda hypernuclear binding
Popis výsledku anglicky
Binding energies of light, A <= 6, Lambda Lambda hypernuclei are calculated using the stochastic variational method in a pionless effective field theory ((sic)pEFT) approach at leading order with the purpose of assessing critically the onset of binding in the strangeness S = -2 hadronic sector. The (sic)EFT input in this sector consists of (i) a Lambda Lambda contact term constrained by the Lambda Lambda scattering length a(Lambda Lambda), using a range of values compatible with Lambda Lambda correlations observed in relativistic heavy ion collisions, and (ii) a Lambda Lambda N contact term constrained by the only available A <= 6 Lambda Lambda hypernucler binding energy datum of He-6(Lambda Lambda). The recently debated neutral three-body and four-body systems (3)(Lambda Lambda)n and (4)(Lambda Lambda)n are found unbound by a wide margin. A relatively large value of vertical bar a(Lambda Lambda)vertical bar greater than or similar to 1.5 fm is needed to bind H-4(Lambda Lambda), thereby questioning its particle stability. In contrast, the particle stability of the A = 5 Lambda Lambda hypernuclear isodoublet H-5(Lambda Lambda)-He-5(Lambda Lambda) is robust, with Lambda separation energy of order 1 MeV.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Návaznosti výsledku
Projekt
<a href="/cs/project/GA19-19640S" target="_blank" >GA19-19640S: Studium interakcí hadronů, jejich produkce a vázaných stavů</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Physics Letters. B
ISSN
0370-2693
e-ISSN
—
Svazek periodika
797
Číslo periodika v rámci svazku
10
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
5
Strana od-do
134893
Kód UT WoS článku
000488071200061
EID výsledku v databázi Scopus
2-s2.0-85071555018