Li, S. X.Shen, C. P.Adachi, I.Ahn, J. K.Aihara, H.Asner, D. M.Atmacan, H.Aushev, T.Ayad, R.Babu, V.Bahinipati, S.Banerjee, SwBehera, P.Belous, K.Bennett, J.Bessner, M.Bilka, T.Biswas, D.Bobrov, A.Bodrov, D.Borah, J.Bra, M.Branchini, P.Browder, T. E.Budano, A.Campajola, M.Chang, M. -C.Chang, P.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Cho, S. -J.Choi, S. -K.Choi, Y.Choudhury, S.Cinabro, D.De Pietro, G.Dhamija, R.Di Capua, F.Dong, T. V.Ferber, T.Frey, A.Fulsom, B. G.Gaur, V.Giri, A.Goldenzweig, P.Graziani, E.Gu, T.Gudkova, K.Hadjivasiliou, C.Hayasaka, K.Hayashii, H.Hsu, C. -L.Inami, K.Ipsita, N.Ishikawa, A.Itoh, R.Jacobs, W. W.Jin, Y.Joo, K. K.Kalita, D.Kaliyar, A. B.Kiesling, C.Kim, C. H.Kim, D. Y.Kim, K. -H.Kim, Y. -K.Kody, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Krokovny, P.Kuhr, T.Kumar, M.Kumar, R.Kumara, K.Kuzmin, A.Kwon, Y. -J.Lam, T.Lange, J. S.Lee, S. C.Li, L. K.Li, Y.Li, Y. B.Li Gioi, L.Libby, J.Lieret, K.Masuda, M.Matsuda, T.Maurya, S. K.Meier, F.Merola, M.Metzner, F.Mizuk, R.Mussa, R.Nakamura, I.Nakao, M.Natkaniec, Z.Natochii, A.Nayak, L.Niiyama, M.Nisar, N. K.Nishida, S.Ogawa, S.Ono, H.Onuki, Y.Oskin, P.Pakhlova, G.Pardi, S.Park, H.Patra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, Leo E.Prencipe, E.Prim, M. T.Rout, N.Russo, G.Sahoo, D.Sandilya, S.Sangal, A.Santelj, L.Savinov, V.Schnell, G.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Shan, W.Shapkin, M.Sharma, C.Shiu, J. -G.Sokolov, A.Solovieva, E.Stari, M.Sumihama, M.Sumisawa, K.Sumiyoshi, T.Sutcliffe, W.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Uchida, M.Uglov, T.Unno, Y.Uno, S.Vahsen, S. E.van Tonder, R.Varner, G.Vinokurova, A.Waheed, E.Wang, E.Watanabe, M.Watanuki, S.Won, E.Yabsley, B. D.Yan, W.Yang, S. B.Yelton, J.Yin, J. H.Yuan, C. Z.Zhang, Z. P.Zhilich, V.2024-01-222024-01-222023-02-142470-0010https://hdl.handle.net/10919/117448We report a study of Λc+→ς+π0, Λc+→ς+η, and Λc+→ς+η′ using the data sample corresponding to an integrated luminosity of 980 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The branching fractions relative to Λc+→ς+π0 are measured as BΛc+→ς+η/BΛc+→ς+π0=0.25±0.03±0.01 and BΛc+→ς+η′/BΛc+→ς+π0=0.33±0.06±0.02. Using BΛc+→ς+π0=(1.25±0.10)%, we obtain BΛc+→ς+η=(3.14±0.35±0.17±0.25)×10-3 and BΛc+→ς+η′=(4.16±0.75±0.25±0.33)×10-3. Here the uncertainties are statistical, systematic, and from BΛc+→ς+π0, respectively. The ratio of the branching fraction of Λc+→ς+η′ with respect to that of Λc+→ς+η is measured to be BΛc+→ς+η′/BΛc+→ς+η=1.34±0.28±0.08. We update the asymmetry parameter of Λc+→ς+π0, ας+π0=-0.48±0.02±0.02, with a considerably improved precision. The asymmetry parameters of Λc+→ς+η and Λc+→ς+η′ are measured to be ας+η=-0.99±0.03±0.05 and ας+η′=-0.46±0.06±0.03 for the first time.12 page(s)application/pdfenIn CopyrightArticle - Refereedhttps://doi.org/10.1103/PhysRevD.107.0320031073Piilonen, Leo [0000-0001-6836-0748]2470-0029