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  • Letter
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Observation of the decays B+→Σc(2455)++Ξ¯c− and B0→Σc(2455)0Ξ¯c0

M. Abumusabh, I. Adachi, L. Aggarwal, H. Ahmed, Y. Ahn, H. Aihara, N. Akopov, S. Alghamdi, M. Alhakami et al. (The Belle and Belle II Collaborations)

M. Alhakami, A. Aloisio, N. Althubiti, K. Amos, N. Anh Ky, D. M. Asner, H. Atmacan, T. Aushev, V. Aushev, R. Ayad, V. Babu, H. Bae, N. K. Baghel, S. Bahinipati, P. Bambade, Sw. Banerjee, M. Barrett, M. Bartl, J. Baudot, A. Baur, A. Beaubien, F. Becherer, J. Becker, J. V. Bennett, F. U. Bernlochner, V. Bertacchi, M. Bertemes, E. Bertholet, M. Bessner, S. Bettarini, V. Bhardwaj, B. Bhuyan, F. Bianchi, D. Biswas, A. Bobrov, D. Bodrov, A. Bondar, G. Bonvicini, J. Borah, A. Boschetti, A. Bozek, M. Bračko, P. Branchini, R. A. Briere, T. E. Browder, A. Budano, S. Bussino, Q. Campagna, M. Campajola, L. Cao, G. Casarosa, C. Cecchi, M.-C. Chang, P. Cheema, L. Chen, B. G. Cheon, K. Chilikin, J. Chin, K. Chirapatpimol, H.-E. Cho, K. Cho, S.-J. Cho, S.-K. Choi, S. Choudhury, L. Corona, J. X. Cui, E. De La Cruz-Burelo, S. A. De La Motte, G. De Nardo, G. De Pietro, R. de Sangro, M. Destefanis, S. Dey, A. Di Canto, J. Dingfelder, Z. Doležal, I. Domínguez Jiménez, T. V. Dong, X. Dong, M. Dorigo, K. Dugic, G. Dujany, P. Ecker, D. Epifanov, J. Eppelt, R. Farkas, P. Feichtinger, T. Ferber, T. Fillinger, C. Finck, G. Finocchiaro, F. Forti, A. Frey, B. G. Fulsom, A. Gabrielli, A. Gale, E. Ganiev, M. Garcia-Hernandez, R. Garg, G. Gaudino, V. Gaur, V. Gautam, A. Gellrich, D. Ghosh, H. Ghumaryan, G. Giakoustidis, R. Giordano, A. Giri, P. Gironella Gironell, B. Gobbo, R. Godang, P. Goldenzweig, W. Gradl, E. Graziani, D. Greenwald, K. Gudkova, I. Haide, Y. Han, C. Harris, H. Hayashii, S. Hazra, C. Hearty, M. T. Hedges, G. Heine, I. Heredia de la Cruz, T. Higuchi, M. Hoek, M. Hohmann, R. Hoppe, P. Horak, X. T. Hou, C.-L. Hsu, T. Humair, T. Iijima, K. Inami, N. Ipsita, A. Ishikawa, R. Itoh, M. Iwasaki, P. Jackson, W. W. Jacobs, E.-J. Jang, Q. P. Ji, Y. Jin, A. Johnson, J. Kandra, K. H. Kang, F. Keil, C. Kiesling, C.-H. Kim, D. Y. Kim, J.-Y. Kim, K.-H. Kim, Y.-K. Kim, H. Kindo, K. Kinoshita, P. Kodyš, T. Koga, S. Kohani, K. Kojima, A. Korobov, S. Korpar, E. Kovalenko, R. Kowalewski, P. Križan, P. Krokovny, T. Kuhr, Y. Kulii, R. Kumar, K. Kumara, T. Kunigo, A. Kuzmin, Y.-J. Kwon, K. Lalwani, T. Lam, J. S. Lange, T. S. Lau, M. Laurenza, R. Leboucher, F. R. Le Diberder, M. J. Lee, C. Lemettais, P. Leo, P. M. Lewis, C. Li, H.-J. Li, L. K. Li, Q. M. Li, W. Z. Li, Y. Li, Y. B. Li, Y. P. Liao, J. Libby, J. Lin, V. Lisovskyi, M. H. Liu, Q. Y. Liu, Z. Liu, D. Liventsev, S. Longo, A. Lozar, T. Lueck, C. Lyu, Y. Ma, M. Maggiora, S. P. Maharana, R. Maiti, G. Mancinelli, R. Manfredi, E. Manoni, M. Mantovano, D. Marcantonio, S. Marcello, C. Marinas, C. Martellini, A. Martens, T. Martinov, L. Massaccesi, M. Masuda, T. Matsuda, D. Matvienko, S. K. Maurya, M. Maushart, J. A. McKenna, Z. Mediankin Gruberová, R. Mehta, F. Meier, D. Meleshko, M. Merola, C. Miller, M. Mirra, K. Miyabayashi, H. Miyake, S. Mondal, S. Moneta, A. L. Moreira de Carvalho, H.-G. Moser, R. Mussa, I. Nakamura, M. Nakao, H. Nakazawa, Y. Nakazawa, M. Naruki, Z. Natkaniec, A. Natochii, M. Nayak, M. Neu, S. Nishida, S. Ogawa, R. Okubo, H. Ono, Y. Onuki, G. Pakhlova, S. Pardi, J. Park, S.-H. Park, B. Paschen, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, P. L. M. Podesta-Lerma, T. Podobnik, C. Praz, S. Prell, E. Prencipe, M. T. Prim, S. Privalov, H. Purwar, P. Rados, G. Raeuber, S. Raiz, V. Raj, K. Ravindran, J. U. Rehman, M. Reif, S. Reiter, D. Ricalde Herrmann, I. Ripp-Baudot, G. Rizzo, S. H. Robertson, J. M. Roney, A. Rostomyan, N. Rout, D. A. Sanders, S. Sandilya, L. Santelj, C. Santos, V. Savinov, B. Scavino, G. Schnell, M. Schnepf, K. Schoenning, C. Schwanda, Y. Seino, A. Selce, K. Senyo, J. Serrano, C. Sfienti, W. Shan, G. Sharma, C. P. Shen, X. D. Shi, T. Shillington, T. Shimasaki, J.-G. Shiu, D. Shtol, B. Shwartz, A. Sibidanov, F. Simon, J. B. Singh, J. Skorupa, R. J. Sobie, M. Sobotzik, A. Soffer, A. Sokolov, E. Solovieva, S. Spataro, B. Spruck, M. Starič, P. Stavroulakis, L. Stoetzer, R. Stroili, M. Sumihama, N. Suwonjandee, H. Svidras, M. Takizawa, S. Tanaka, S. S. Tang, K. Tanida, F. Tenchini, F. Testa, A. Thaller, O. Tittel, R. Tiwary, E. Torassa, K. Trabelsi, F. F. Trantou, I. Tsaklidis, M. Uchida, I. Ueda, K. Unger, Y. Unno, K. Uno, S. Uno, P. Urquijo, Y. Ushiroda, S. E. Vahsen, R. van Tonder, K. E. Varvell, M. Veronesi, V. S. Vismaya, L. Vitale, R. Volpe, M. Wakai, S. Wallner, M.-Z. Wang, A. Warburton, C. Wessel, E. Won, B. D. Yabsley, S. Yamada, W. Yan, S. B. Yang, J. Yelton, J. H. Yin, K. Yoshihara, C. Z. Yuan, J. Yuan, Y. Yusa, L. Zani, F. Zeng, B. Zhang, J. S. Zhou, Q. D. Zhou, L. Zhu, and R. Žlebčík (The Belle and Belle II Collaborations)

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Phys. Rev. D 112, L051101 – Published 5 September, 2025

DOI: https://doi.org/10.1103/2fhj-8vyx

Abstract

We report the first observation of the two-body baryonic decays B+→Σc(2455)++Ξ¯c− and B0→Σc(2455)0Ξ¯c0 with significances of 7.3σ and 6.2σ, respectively, including statistical and systematic uncertainties. The branching fractions are measured to be B(B+→Σc(2455)++Ξ¯c−)=(5.74±1.11±0.42−1.53+2.47)×10−4 and B(B0→Σc(2455)0Ξ¯c0)=(4.83±1.12±0.37−0.60+0.72)×10−4. The first and second uncertainties are statistical and systematic, respectively, while the third ones arise from the absolute branching fractions of Ξ¯c− or Ξ¯c0 decays. The data samples used for this analysis have integrated luminosities of 711  fb−1 and 365  fb−1, and were collected at the ϒ(4S) resonance by the Belle and Belle II detectors operating at the KEKB and SuperKEKB asymmetric-energy e+e− colliders, respectively.

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Corrections

30 October, 2025

Correction: Figures 2(b) and 2(d) contained a typographical error in the units of the x axes and have been fixed.

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Outline

Information

Phys. Rev. D 112, L051101– Published 5 September, 2025
  • Received 8 July 2025
  • Accepted 8 August 2025
  • Corrected 30 October 2025
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