Ablikim, M.Achasov, M.N.Adlarson, P.Ahmed, S.Çetin, Serkant AliKolcu, Onur Buğra2022-06-012022-06-012022Ablikim, 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.L0711012470-0010https://10.1103/PhysRevD.105.L071101https://hdl.handle.net/20.500.12713/2772A search for invisible decays of the ? baryon is carried out in the process J/????¯ based on (1.0087±0.0044)×1010 J/? events collected with the BESIII detector located at the BEPCII storage ring. No signals are found for the invisible decays of ? 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.eninfo:eu-repo/semantics/openAccessArticle1057WOS:0008235430000112-s2.0-85130228866Q110.1103/PhysRevD.105.L071101Q1