Back to Search
Start Over
Constraints on Ξ− nuclear interactions from capture events in emulsion
- Source :
- Physics Letters B, Vol 820, Iss, Pp 136555-(2021), Physics Letters
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Five $\Xi^- p\to \Lambda\Lambda$ two-body capture events in $^{12}$C and $^{14}$N emulsion nuclei, in which a pair of single-$\Lambda$ hypernuclei is formed and identified by their weak decay, have been observed in $(K^-,K^+)$ emulsion exposures at KEK and J-PARC. Applying a $\Xi^-$-nucleus optical potential methodology to study atomic and nuclear transitions, we confirm that these capture events occur from Coulomb assisted $1p_{\Xi^-}$ nuclear states. Long-range $\Xi N$ shell-model correlations are found essential to achieve consistency between the $^{12}$C and $^{14}$N events. The resulting $\Xi$-nuclear interaction is strongly attractive, with $\Xi$ potential depth in nuclear matter $V_{\Xi}\gtrsim 20$ MeV. Implications to multi-strangeness features of dense matter are outlined.<br />Comment: v4: 16 pages, 2 figures, 2 tables, agrees with published PLB version
- Subjects :
- Physics
Nuclear and High Energy Physics
Nuclear Theory
010308 nuclear & particles physics
QC1-999
Hyperon strong interactions
Ξ− atoms and hypernuclei
Nuclear matter
01 natural sciences
Optical potential
Nuclear physics
High Energy Physics - Phenomenology
medicine.anatomical_structure
Consistency (statistics)
0103 physical sciences
Emulsion
medicine
Coulomb
010306 general physics
Nuclear Experiment
Nucleus
Nuclear theory
Dense matter
Subjects
Details
- ISSN :
- 03702693
- Volume :
- 820
- Database :
- OpenAIRE
- Journal :
- Physics Letters B
- Accession number :
- edsair.doi.dedup.....17a1493760b012901255c00f224a5c60