Search for invisible decays of the Λ baryon

BESIII Collaboration, M. Ablikim, M. N. Achasov, N. Kalantar-Nayestanaki, R. Kappert, M. Kavatsyuk, J. Messchendorp, V. Rodin

OnderzoeksoutputAcademicpeer review

5 Citaten (Scopus)
6 Downloads (Pure)


A search for invisible decays of the Λ baryon is carried out in the process J/ψ→ΛΛ¯ based on (1.0087±0.0044)×1010 J/ψ events collected with the BESIII detector located at the BEPCII storage ring. No signals are found for the invisible decays of Λ baryon, and the upper limit of the branching fraction is determined to be 7.4×10-5 at the 90% confidence level. This is the first search for invisible decays of baryons; such searches will play an important role in constraining dark sector models related to the baryon asymmetry.
Originele taal-2English
TijdschriftPhysical Review D
Nummer van het tijdschrift7
StatusPublished - 1-apr.-2022

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