Cover Image

Saved in:
Bibliographic Details
Main Authors: Belle II Collaboration, Abumusabh, M., Adachi, I., Ahmed, H., Ahn, Y., Aihara, H., Akopov, N., Alghamdi, S., Alhakami, M., Althubiti, N., Amos, K., Ky, N. Anh, Asner, D. M., Atmacan, H., Ayad, R., Babu, V., Baghel, N. K., Bahinipati, S., Bambade, P., Banerjee, Sw., Bartl, M., Baudot, J., Beaubien, A., Becker, J., Bennett, J. V., Bertacchi, V., Bertemes, M., Bertholet, E., Bettarini, S., Bhardwaj, V., Biswas, D., Bobrov, A., Bodrov, D., Bonvicini, G., Borah, J., Boschetti, A., Bračko, M., Branchini, P., Briere, R. A., Browder, T. E., Budano, A., Bussino, S., Campagna, Q., Campajola, M., Casarosa, G., Cecchi, C., Chang, P., Cheema, P., Chen, L., Cheon, B. G., Cheshta, C., Chetri, H., Chilikin, K., Chin, J., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Chutia, S., Colorado-Caicedo, J. A., Consigny, I., Corona, L., Cui, J. X., Das, S., De La Motte, S. A., De Nardo, G., De Pietro, G., de Sangro, R., Destefanis, M., Di Canto, A., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dong, X., Dorigo, M., Dujany, G., Ecker, P., Epifanov, D., Eppelt, J., Farkas, R., Feichtinger, P., Ferber, T., Fillinger, T., Finocchiaro, G., Forti, F., Fulsom, B. G., Gabrielli, A., Ganiev, E., Garg, R., Gaudino, G., Gaur, V., Gautam, V., Gaz, A., Gellrich, A., Ghosh, D., Ghumaryan, H., Giordano, R., Giri, A., Gironell, P. Gironella, Glazov, A., Gobbo, B., Godang, R., Gogota, O., Goldenzweig, P., Gradl, W., Graziani, E., Greenwald, D., Gudkova, K., Haide, I., Han, Y., Hazra, S., Hedges, M. T., Heidelbach, A., Heine, G., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hettiarachchi, D., Higuchi, T., Hoek, M., Hohmann, M., Hoppe, R., Horak, P., Hou, X. T., Hsu, C. -L., Humair, T., Iijima, T., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jia, S., Jin, Y., Johnson, A., Kaliyar, A. B., Kandra, J., Kang, K. H., Karyan, G., Keil, F., Kiesling, C., Kim, D. Y., Kim, J. -Y., Kim, K. -H., Kinoshita, K., Kodyš, P., Koga, T., Kohani, S., Korobov, A., Korpar, S., Kovalenko, E., Kowalewski, R., Križan, P., Krokovny, P., Kuhr, T., Kumara, K., Kunigo, T., Kuzmin, A., Kwon, Y. -J., Lacaprara, S., Lam, T., Lau, T. S., Laurenza, M., Leboucher, R., Diberder, F. R. Le, Lee, H., Lee, M. J., Lemettais, C., Leo, P., Lewis, P. M., Li, C., Li, L. K., Li, Q. M., Li, W. Z., Li, Y., Li, Y. B., Liao, Y. P., Libby, J., Lin, J., Lin, S., Liu, M. H., Liu, Q. Y., Liu, Z., Liventsev, D., Longo, S., Lueck, T., Lyu, C., Ma, J. L., Ma, Y., Maggiora, M., Manfredi, R., Manoni, E., Mantovano, M., Marcantonio, D., Marfoli, M., Marinas, C., Martellini, C., Martens, A., Martinov, T., Massaccesi, L., Masuda, M., Matvienko, D., Maurya, S. K., Maushart, M., McKenna, J. A., Gruberová, Z. Mediankin, Meier, F., Meleshko, D., Merola, M., Miller, C., Mirra, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moneta, S., de Carvalho, A. L. Moreira, Moser, H. -G., Mrvar, M., Murakami, H., Nakamura, I., Nakao, M., Nakazawa, Y., Naruki, M., Natkaniec, Z., Natochii, A., Nayak, M., Neu, M., Nishida, S., Nomaru, R., Ogawa, S., Ono, H., Pakhlova, G., Panta, A., Pardi, S., Park, J., Park, S. -H., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podesta-Lerma, P. L. M., Podobnik, T., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purwar, H., Rados, P., Raiz, S., Ravindran, K., Rehman, J. U., Reif, M., Reiter, S., Reuter, L., Herrmann, D. Ricalde, Ripp-Baudot, I., Rizzo, G., Roney, J. M., Rostomyan, A., Rout, N., Salutari, L., Sanders, D. A., Santelj, L., Santos, C., Scavino, B., Schmitt, C., Schnepf, M., Schoenning, K., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Sfienti, C., Shan, W., Sharma, G., Shi, X. D., Shillington, T., Shiu, J. -G., Shtol, D., Shwartz, B., Sibidanov, A., Simon, F., Skorupa, J., Sobie, R. J., Sobotzik, M., Soffer, A., Sokolov, A., Spataro, S., Spruck, B., Starič, M., Stavroulakis, P., Stroili, R., Sumihama, M., Takahashi, M., Tamponi, U., Tang, S. S., Tanida, K., Tenchini, F., Thaller, A., Manh, T. Tien, Tittel, O., Tiwary, R., Torassa, E., Trabelsi, K., Trantou, F. F., Ueda, I., Unger, K., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., van Tonder, R., Varvell, K. E., Veronesi, M., Vismaya, V. S., Vitale, L., Vobbilisetti, V., Volpe, R., Wakai, M., Wallner, S., Wang, M. -Z., Warburton, A., Watanuki, S., Wessel, C., Won, E., Xu, X. P., Yabsley, B. D., Yan, W., Yi, K., Yin, J. H., Yoshihara, K., Yuan, J., Yusa, Y., Zani, L., Zeng, F., Zhang, B., Zhilich, V., Zhou, J. S., Zhou, Q. D., Zhu, L., Žlebčík, R.
Format: Preprint
Published: 2025
Subjects:
High Energy Physics - Experiment
Online Access:https://arxiv.org/abs/2509.25765
Tags: Add Tag
No Tags, Be the first to tag this record!
Table of Contents:
  • We report decay-rate $CP$ asymmetries of the singly-Cabibbo-suppressed decays $Ξ_c^+\toΣ^+h^+h^-$ and $Λ_c^+\to ph^+h^-$, with $h=K,π$, measured using 428 fb$^{-1}$ of $e^+e^-$ collisions collected by the Belle II experiment at the SuperKEKB collider. The results, \begin{equation} A_{CP}(Ξ_c^+\toΣ^+K^+K^-) = (3.7\pm6.6\pm0.6)\%, \end{equation} \begin{equation} A_{CP}(Ξ_c^+\toΣ^+π^+π^-) = (9.5\pm6.8\pm0.5)\%, \end{equation} \begin{equation} A_{CP}(Λ_c^+\to pK^+K^-) = (3.9\pm1.7\pm0.7)\%, \end{equation} \begin{equation} A_{CP}(Λ_c^+\to pπ^+π^-) = (0.3\pm1.0\pm0.2)\%, \end{equation} where the first uncertainties are statistical and the second systematic, agree with $CP$ symmetry. From these results we derive the sums \begin{equation} A_{CP}(Ξ_c^+\toΣ^+π^+π^-) \, + \, A_{CP}(Λ_c^+\to pK^+K^-) = (13.4 \pm 7.0\pm 0.9)\%, \end{equation} \begin{equation} A_{CP}(Ξ_c^+\toΣ^+K^+K^-) \, + \, A_{CP}(Λ_c^+\to pπ^+π^-) = (\phantom{0}4.0 \pm 6.6\pm 0.7)\%, \end{equation} which are consistent with the $U$-spin symmetry prediction of zero. These are the first measurements of $CP$ asymmetries for individual hadronic three-body charmed-baryon decays.

Similar Items