Search for weakly decaying Λn‾ and ΛΛ exotic bound states in central Pb–Pb collisions at sNN=2.76 TeV
Physics Letters B, ISSN: 0370-2693, Vol: 752, Page: 267-277
2016
- 25Citations
- 144Captures
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Metrics Details
- Citations25
- Citation Indexes25
- CrossRef25
- Captures144
- Readers144
- 144
Article Description
We present results of a search for two hypothetical strange dibaryon states, i.e. the H-dibaryon and the possible Λn‾ bound state. The search is performed with the ALICE detector in central (0–10%) Pb–Pb collisions at sNN=2.76 TeV, by invariant mass analysis in the decay modes Λn‾→d‾π+ and H-dibaryon →Λpπ−. No evidence for these bound states is observed. Upper limits are determined at 99% confidence level for a wide range of lifetimes and for the full range of branching ratios. The results are compared to thermal, coalescence and hybrid UrQMD model expectations, which describe correctly the production of other loosely bound states, like the deuteron and the hypertriton.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0370269315009041; http://dx.doi.org/10.1016/j.physletb.2015.11.048; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85040844335&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0370269315009041; https://dx.doi.org/10.1016/j.physletb.2015.11.048
Elsevier BV
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