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@ARTICLE{Haidenbauer:1008862,
author = {Haidenbauer, Johann and Meißner, Ulf-G.},
title = {$\Lambda {\bar{\Lambda }}$ final-state interaction in the
reactions $e^+e^- \rightarrow \phi {\Lambda }{\bar{{\Lambda
}}}$ and $e^+e^- \rightarrow \eta {\Lambda }{\bar{{\Lambda
}}}$},
journal = {The European physical journal / A},
volume = {59},
number = {6},
issn = {1434-6001},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2023-02515},
pages = {136},
year = {2023},
abstract = {Near-threshold ΛΛ¯ mass spectra for the reactions
e+e−→ηΛΛ¯ and e+e−→ϕΛΛ¯ are investigated
with an emphasis on the role played by the interaction in
the ΛΛ¯ system. A variety of ΛΛ¯ potential models is
employed that have been established in the analysis of data
on pp¯→ΛΛ¯ in the past. It is shown that the
near-threshold enhancement observed for the two e+e−
reactions can be reproduced by considering the ΛΛ¯
final-state interaction in the partial waves suggested by
the helicity-angle analysis of the experiments. For
e+e−→ηΛΛ¯ the same ΛΛ¯ S-wave interaction as in
e+e−→ΛΛ¯ is relevant and with it a consistent
description of the pertinent measurements can be achieved.
It is pointed out that a nonzero threshold cross section as
observed for the latter reaction is not supported by the new
ηΛΛ¯ data.},
cin = {IAS-4 / IKP-3},
ddc = {530},
cid = {I:(DE-Juel1)IAS-4-20090406 / I:(DE-Juel1)IKP-3-20111104},
pnm = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
(SDLs) and Research Groups (POF4-511) / DFG project
196253076 - TRR 110: Symmetrien und Strukturbildung in der
Quantenchromodynamik (196253076)},
pid = {G:(DE-HGF)POF4-5111 / G:(GEPRIS)196253076},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001018455900002},
doi = {10.1140/epja/s10050-023-01017-4},
url = {https://juser.fz-juelich.de/record/1008862},
}