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Search for weakly decaying n and exotic bound states in central Pb–Pb collisions at √sNN = 2.76 TeV
ALICE Collaboration Adamova, D. Aggarwal, M. M. Aglieri Rinella, G. Agnello, M. Tapia Takaki, Daniel
ALICE Collaboration
Adamova, D.
Aggarwal, M. M.
Aglieri Rinella, G.
Agnello, M.
Tapia Takaki, Daniel
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Abstract
We present results of a search for two hypothetical strange dibaryon states, i.e. the H-dibaryon and the possible n 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 n → dπ+ and Hdibaryon → pπ−. 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.
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2015-11-28
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Elsevier
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Search for weakly decaying Λn‾ and ΛΛ exotic bound states in central Pb–Pb collisions at sNN=2.76 TeV, In Physics Letters B, Volume 752, 2016, Pages 267-277, ISSN 0370-2693, https://doi.org/10.1016/j.physletb.2015.11.048.
(http://www.sciencedirect.com/science/article/pii/S0370269315009041)