Li, Y. B.Shen, C. P.Adachi, I.Aihara, H.Asner, D. M.Atmacan, H.Aushev, T.Ayad, R.Babu, V.Bahinipati, S.Behera, P.Belous, K.Bennett, J.Bessner, M.Bhardwaj, V.Bhuyan, B.Bilka, T.Bodrov, D.Borah, J.Bozek, A.Bracko, M.Branchini, P.Browder, T. E.Budano, A.Campajola, M.Cervenkov, D.Chang, M. -C.Chang, P.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Cho, S. -J.Choi, S. -K.Choi, Y.Choudhury, S.Cinabro, D.Das, S.De Pietro, G.Dhamija, R.Di Capua, F.Dingfelder, J.Dolezal, Z.V. Dong, T.Dossett, D.Epifanov, D.Fulsom, B. G.Garg, R.Gaur, V.Garmash, A.Giri, A.Goldenzweig, P.Graziani, E.Gu, T.Guan, Y.Gudkova, K.Hadjivasiliou, C.Hayasaka, K.Hayashii, H.Hou, W. -S.Hsu, C. -L.Iijima, T.Inami, K.Ipsita, N.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jang, E. -J.Ji, Q. P.Jia, S.Jin, Y.Joo, K. K.Karyan, G.Kawasaki, T.Kichimi, H.Kiesling, C.Kim, C. H.Kim, D. Y.Kim, K. -H.Kim, Y. -K.Kindo, H.Kinoshita, K.Kodys, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Krizan, P.Krokovny, P.Kumar, M.Kumar, R.Kumara, K.Kwon, Y. -J.Lam, T.Lange, J. S.Laurenza, M.Lee, S. C.Li, C. H.Li, J.Li, L. K.Li, Y.Li Gioi, L.Libby, J.Lieret, K.Liventsev, D.Masuda, M.Matsuda, T.Matvienko, D.Maurya, S. K.Meier, F.Merola, M.Metzner, F.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Nakamura, I.Nakao, M.Natkaniec, Z.Natochii, A.Nayak, L.Niiyama, M.Nisar, N. K.Nishida, S.Ogawa, S.Ono, H.Oskin, P.Pakhlov, P.Pakhlova, G.Pardi, S.Park, H.Park, S. -H.Patra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Podobnik, T.Prencipe, E.Prim, M. T.Rout, N.Russo, G.Sandilya, S.Santelj, L.Savinov, V.Schnell, G.Schueler, J.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Shapkin, M.Sharma, C.Shiu, J. -G.Singh, J. B.Sokolov, A.Solovieva, E.Staric, M.Stottler, Z. S.Sumihama, M.Sumiyoshi, T.Sutcliffe, W.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Trabelsi, K.Tsuboyama, T.Uchida, M.Uglov, T.Unno, Y.Uno, S.Usov, Y.van Tonder, R.Varner, G.Varvell, K. E.Waheed, E.Wang, E.Wang, M. -Z.Watanabe, M.Watanuki, S.Werbycka, O.Wiechczynski, J.Won, E.Yabsley, B. D.Yan, W.Yang, S. B.Yelton, J.Yin, J. H.Yuan, C. Z.Yusa, Y.Zhai, Y.Zhang, Z. P.Zhilich, V.Zhukova, V.2024-01-222024-01-222023-01-200031-9007https://hdl.handle.net/10919/117464We present the study of B¯0→ςc(2455)0,++π±p¯ decays based on 772×106 BB¯ events collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The ςc(2455)0,++ candidates are reconstructed via their decay to Λc+π and Λc+ decays to pK-π+, pKS0, and Λπ+ final states. The corresponding branching fractions are measured to be B(B¯0→ςc(2455)0π+p¯)=(1.09±0.06±0.07)×10-4 and B(B¯0→ςc(2455)++π-p¯)=(1.84±0.11±0.12)×10-4, which are consistent with the world average values with improved precision. A new structure is found in the Mςc(2455)0,++π± spectrum with a significance of 4.2σ including systematic uncertainty. The structure is possibly an excited Λc+ and is tentatively named Λc(2910)+. Its mass and width are measured to be (2913.8±5.6±3.8) MeV/c2 and (51.8±20.0±18.8) MeV, respectively. The products of branching fractions for the Λc(2910)+ are measured to be B(B¯0→Λc(2910)+p¯)×B(Λc(2910)+→ςc(2455)0π+)=(9.5±3.6±1.6)×10-6 and B(B¯0→Λc(2910)+p¯)×B(Λc(2910)+→ςc(2455)++π-)=(1.24±0.35±0.10)×10-5. Here, the first and second uncertainties are statistical and systematic, respectively.7 page(s)application/pdfenCreative Commons Attribution 4.0 InternationalPhysicsBelle CollaborationArticle - Refereedhttps://doi.org/10.1103/PhysRevLett.130.0319011303Piilonen, Leo [0000-0001-6836-0748]367633941079-7114