Logo image
返回
Search for weakly decaying Λn‾ and ΛΛ exotic bound states in central Pb–Pb collisions at √sNN=2.76 TeV
期刊文章   開放取用(OA)   同儕審查

Search for weakly decaying Λn‾ and ΛΛ exotic bound states in central Pb–Pb collisions at √sNN=2.76 TeV

J. Adam, D. Adamová, M.M. Aggarwal, G. Aglieri Rinella, M. Agnello, N. Agrawal, Z. Ahammed, I. Ahmed, S.U. Ahn, I. Aimo, …
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 卷.752, 頁碼.267-277
01/2016
DOI: https://doi.org/10.1016/j.physletb.2015.11.048

摘要

Nuclear and High Energy Physics
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 s NN =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.

檔案與連結 (1)

url
https://doi.org/10.1016/j.physletb.2015.11.048檢視
已出版(紀錄版本) 開放

相關連結

指標

1 檢視次數

詳細資料

Logo image