Hadjivasiliou, C.Fulsom, B. G.Strube, J. F.Adachi, I.Aihara, H.Asner, D. M.Atmacan, H.Aushev, T.Babu, V.Belous, K.Bennett, J.Bessner, M.Bhardwaj, V.Bhuyan, B.Bilka, T.Biswal, J.Bodrov, D.Borah, J.Bozek, A.Bra, M.Branchini, P.Browder, T. E.Budano, A.Campajola, M.Cervenkov, D.Chang, M. -C.Chang, P.Chen, A.Cheon, B. G.Chilikin, K.Cho, H. E.Choi, S. -K.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Das, S.De Pietro, G.Di Capua, F.Dolezal, Z.V. Dong, T.Dossett, D.Epifanov, D.Ferber, T.Garg, R.Gaur, V.Giri, A.Goldenzweig, P.Gu, T.Gudkova, K.Hayashii, H.Hou, W. -S.Hsu, C. -L.Iijima, T.Inami, K.Inguglia, G.Ishikawa, A.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jia, S.Jin, Y.Kahn, J.Kaliyar, A. B.Kang, K. H.Karyan, G.Kiesling, C.Kim, C. H.Kim, D. Y.Kim, K. T.Kim, Y. -K.Kodys, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Krizan, P.Kroeger, R.Krokovny, P.Kumar, R.Kumara, K.Kwon, Y. -J.Lee, S. C.Li, L. K.Li, S. X.Li, Y. B.Li Gioi, L.Libby, J.Lieret, K.MacQueen, C.Masuda, M.Matvienko, D.Merola, M.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Mussa, R.Nakao, M.Natkaniec, Z.Natochii, A.Nayak, M.Nisar, N. K.Nishida, S.Nishimura, K.Ono, H.Oskin, P.Pakhlov, P.Pakhlova, G.Pang, T.Park, S. -H.Paul, S.Pedlar, T. K.Piilonen, L. E.Podobnik, T.Popov, V.Prencipe, E.Prim, M. T.Rohrken, M.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Sandilya, S.Sangal, A.Santelj, L.Sanuki, T.Savinov, V.Schnell, G.Schwanda, C.Seino, Y.Senyo, K.Shapkin, M.Shen, C. P.Shiu, J. -G.Shwartz, B.Simon, F.Singh, J. B.Solovieva, E.Staric, M.Stottler, Z. S.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tanida, K.Tenchini, F.Uchida, M.Uglov, T.Unno, Y.Uno, S.Van Tonder, R.Varner, G.Vinokurova, A.Waheed, E.Wang, C. H.Wang, E.Wang, M. -Z.Wang, P.Wang, X. L.Watanuki, S.Wood, L.Yabsley, B. D.Yan, W.Ye, H.Yelton, J.Yin, J. H.Zhang, Z. P.Zhilich, V.Zhukova, V.2024-01-222024-01-222022-03-042470-0010https://hdl.handle.net/10919/117470We present a search for the decays of B0 mesons into a final state containing a Λ baryon and missing energy. These results are obtained from a 711 fb-1 data sample that contains 772×106 BB¯ pairs and was collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode and require the remainder of the event to consist of only a single Λ. No evidence for these decays is found, and we set 90% confidence level upper limits on the branching fractions in the range 2.1-3.8×10-5. This measurement provides the world's most restrictive limits, with implications for baryogenesis and dark matter production.8 page(s)application/pdfenIn CopyrightArticle - Refereedhttps://doi.org/10.1103/PhysRevD.105.L0511011055Piilonen, Leo [0000-0001-6836-0748]2470-0029