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Search for invisible decays of the Λ baryon

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Date

2022

Author

Ablikim, M.
Achasov, M.N.
Adlarson, P.
Ahmed, S.
Cetin, S. A.
Kolcu, O. B.

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Citation

Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Aliberti, R., . . . (BESIII Collaboration). (2022). Search for invisible decays of the Λ baryon. Physical Review D, 105(7) doi:10.1103/PhysRevD.105.L071101

Abstract

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. © 2022 authors. Published by the American Physical Society.

Source

Physical Review D

Volume

105

Issue

7

URI

https://10.1103/PhysRevD.105.L071101
https://hdl.handle.net/20.500.12713/2772

Collections

  • Scopus İndeksli Yayınlar Koleksiyonu [1892]
  • WoS İndeksli Yayınlar Koleksiyonu [1965]



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