[HTML][HTML] Indications for a bound tetraneutron
T Faestermann, A Bergmaier, R Gernhäuser, D Koll… - Physics Letters B, 2022 - Elsevier
T Faestermann, A Bergmaier, R Gernhäuser, D Koll, M Mahgoub
Physics Letters B, 2022•ElsevierAbstract Using the reaction 7 Li (7 Li, 10 C) we tried to populate states in the tetraneutron. A
peak in the energy spectrum of identified 10 C, which we cannot attribute to a reaction with
any other of the target components, corresponds to an excitation of the 10 C+ 4n system of
2.93±0.16 MeV. Under different kinematic conditions an equivalent peak was observed. For
a binding energy of the tetraneutron of− 2.93 MeV a much larger width than the observed
upper limit of Γ< 0.24 MeV (mainly due to experimental spread) is expected. Therefore, we …
peak in the energy spectrum of identified 10 C, which we cannot attribute to a reaction with
any other of the target components, corresponds to an excitation of the 10 C+ 4n system of
2.93±0.16 MeV. Under different kinematic conditions an equivalent peak was observed. For
a binding energy of the tetraneutron of− 2.93 MeV a much larger width than the observed
upper limit of Γ< 0.24 MeV (mainly due to experimental spread) is expected. Therefore, we …
Abstract
Abstract Using the reaction 7 Li (7 Li, 10 C) we tried to populate states in the tetraneutron. A peak in the energy spectrum of identified 10 C, which we cannot attribute to a reaction with any other of the target components, corresponds to an excitation of the 10 C+ 4n system of 2.93±0.16 MeV. Under different kinematic conditions an equivalent peak was observed. For a binding energy of the tetraneutron of− 2.93 MeV a much larger width than the observed upper limit of Γ< 0.24 MeV (mainly due to experimental spread) is expected. Therefore, we favor the interpretation that this peak corresponds to 10 C in the first excited state at 3.354 MeV and a tetraneutron with a binding energy of+ 0.42±0.16 MeV.
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