Consequences of increased hypertriton binding for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>s</mml:mi></mml:math> -shell <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="normal">?</mml:mi></mml:math> -hypernuclear systems
نویسندگان
چکیده
Consequences of increasing the binding energy hypertriton ground state $_{\mathrm{\ensuremath{\Lambda}}}^{3}\mathrm{H}({J}^{P}={\frac{1}{2}}^{+})$ from emulsion value ${B}_{\mathrm{\ensuremath{\Lambda}}}^{\mathrm{EMUL}}(_{\mathrm{\ensuremath{\Lambda}}}^{3}\mathrm{H}_{\mathrm{g}.\mathrm{s}.})=0.13\ifmmode\pm\else\textpm\fi{}0.05$ MeV to STAR ${B}_{\mathrm{\ensuremath{\Lambda}}}^{\mathrm{STAR}}{(}_{\mathrm{\ensuremath{\Lambda}}}^{3}\mathrm{H})=(0.41\ifmmode\pm\else\textpm\fi{}0.12\ifmmode\pm\else\textpm\fi{}0.11)$ are studied for $s$-shell hypernuclei within a pionless effective field theory ($\overline{)\ensuremath{\pi}}$ EFT) approach at leading order, constrained by energies ${0}^{+}$ and ${1}^{+}\phantom{\rule{4pt}{0ex}}_{\mathrm{\ensuremath{\Lambda}}}^{4}\mathrm{H}$ states. The stochastic variational method is used in bound-state calculations, whereas inverse analytic continuation coupling constant locate $S$-matrix poles continuum It found that $\mathrm{\ensuremath{\Lambda}}nn({\frac{1}{2}}^{+})$ resonance becomes broader less likely be observed experimentally, $_{\mathrm{\ensuremath{\Lambda}}}^{3}\mathrm{H}({\frac{3}{2}}^{+})$ spin-flip virtual moves closer $\mathrm{\ensuremath{\Lambda}}d$ threshold become shallow bound specific $\mathrm{\ensuremath{\Lambda}}N$ interaction strengths. effect such near-threshold on femtoscopic studies $\mathrm{\ensuremath{\Lambda}}$-deuteron correlations, its lifetime if bound, discussed. Increasing ${B}_{\mathrm{\ensuremath{\Lambda}}}(_{\mathrm{\ensuremath{\Lambda}}}^{3}\mathrm{H}_{\mathrm{g}.\mathrm{s}.})$ moderately, up $\ensuremath{\approx}0.5$ MeV, hardly affects calculated values ${B}_{\mathrm{\ensuremath{\Lambda}}}(_{\mathrm{\ensuremath{\Lambda}}}^{5}\mathrm{He})$.
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2022
ISSN: ['2470-0002', '2469-9985', '2469-9993']
DOI: https://doi.org/10.1103/physrevc.105.015202