Consequences of increased hypertriton binding for s-shell Λ-hypernuclear systems

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00556243" target="_blank" >RIV/61389005:_____/22:00556243 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevC.105.015202" target="_blank" >https://doi.org/10.1103/PhysRevC.105.015202</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.105.015202" target="_blank" >10.1103/PhysRevC.105.015202</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Consequences of increased hypertriton binding for s-shell Λ-hypernuclear systems

Popis výsledku v původním jazyce

Consequences of increasing the binding energy of the hypertriton ground state H-3(Lambda)(J(P) = 1/2(+)) from the emulsion value B-Lambda(EMUL)(H-3(Lambda)g.s.) = 0.13 +/- 0.05 MeV to the STAR value B-Lambda(STAR)(H-3(Lambda)) = (0.41 +/- 0.12 +/- 0.11) MeV are studied for s-shell hypernuclei within a pionless effective field theory ((sic) EFT) approach at leading order, constrained by the binding energies of the 0(+) and 1(+) H-4(Lambda) states. The stochastic variational method is used in bound-state calculations, whereas the inverse analytic continuation in the coupling constant method is used to locate S-matrix poles of continuum states. It is found that the Lambda nn(1/2(+)) resonance becomes broader and less likely to be observed experimentally, whereas the H-3(Lambda)(3/2(+)) spin-flip virtual state moves closer to the Lambda d threshold to become a shallow bound state for specific Lambda N interaction strengths. The effect of such a near-threshold H-3(Lambda)(3/2(+)) state on femtoscopic studies of Lambda-deuteron correlations, and its lifetime if bound, are discussed. Increasing B-Lambda(H-3(Lambda)g.s.) moderately, up to approximate to 0.5 MeV, hardly affects calculated values of B-Lambda(He-5(Lambda)).

Název v anglickém jazyce

Consequences of increased hypertriton binding for s-shell Λ-hypernuclear systems

Popis výsledku anglicky

Consequences of increasing the binding energy of the hypertriton ground state H-3(Lambda)(J(P) = 1/2(+)) from the emulsion value B-Lambda(EMUL)(H-3(Lambda)g.s.) = 0.13 +/- 0.05 MeV to the STAR value B-Lambda(STAR)(H-3(Lambda)) = (0.41 +/- 0.12 +/- 0.11) MeV are studied for s-shell hypernuclei within a pionless effective field theory ((sic) EFT) approach at leading order, constrained by the binding energies of the 0(+) and 1(+) H-4(Lambda) states. The stochastic variational method is used in bound-state calculations, whereas the inverse analytic continuation in the coupling constant method is used to locate S-matrix poles of continuum states. It is found that the Lambda nn(1/2(+)) resonance becomes broader and less likely to be observed experimentally, whereas the H-3(Lambda)(3/2(+)) spin-flip virtual state moves closer to the Lambda d threshold to become a shallow bound state for specific Lambda N interaction strengths. The effect of such a near-threshold H-3(Lambda)(3/2(+)) state on femtoscopic studies of Lambda-deuteron correlations, and its lifetime if bound, are discussed. Increasing B-Lambda(H-3(Lambda)g.s.) moderately, up to approximate to 0.5 MeV, hardly affects calculated values of B-Lambda(He-5(Lambda)).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/GA19-19640S" target="_blank" >GA19-19640S: Studium interakcí hadronů, jejich produkce a vázaných stavů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review C

ISSN

2469-9985

e-ISSN

2469-9993

Svazek periodika

105

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

015202

Kód UT WoS článku

000769396000003

EID výsledku v databázi Scopus

2-s2.0-85124157634