First search for the $\eta_{c2}(1D)$ in $B$ decays at Belle

• Published in: The journal of high energy physics 2020-05, Vol.5
• Main Authors: Chilikin, K., Adachi, I., Aihara, H., Al Said, S., Asner, D., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Belous, K., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T., Campajola, M., Cao, L., Červenkov, D., Chang, M.-C., Chekelian, V., Chen, A., Cheon, B., Cho, K., Choi, S.-K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., de Nardo, G., Di Capua, F., Doležal, Z., Dong, T., Eidelman, S., Epifanov, D., Fast, J., Ferber, T., Ferlewicz, D., Fulsom, B., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Hartbrich, O., Hayasaka, K., Hayashii, H., Hernandez Villanueva, M., Hou, W.-S., Hsu, C.-L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W., Jang, E.-J., Jia, S., Jin, Y., Joo, K., Kaliyar, A., Karyan, G., Kato, Y., Kawasaki, T., Kiesling, C., Kim, C., Kim, D., Kim, K.-H., Kim, S., Kim, Y.-K., Kimmel, T., Kinoshita, K., Kodyš, P., Korpar, S., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lalwani, K., Lange, J., Lee, I., Lee, S., Li, L., Li, Y., Li Gioi, L., Libby, J.
• Format: Article
• Language: English
• Subjects: High Energy Physics - Experiment; Physics
• ISSN: 1126-6708; 1029-8479
• DOI: 10.1007/JHEP05(2020)034

The first dedicated search for the ηc2(1D) is carried out using the decaysB+ → ηc2(1D)K+, B0 → ηc2(1D)K0S, B0 → ηc2(1D)π−K+, and B+ → ηc2(1D)π+K0Swith ηc2(1D) → hcγ. No significant signal is found. For the ηc2(1D) mass range between3795 and 3845 MeV/c2, the branching-fraction upper limits are determined to be B(B+ →ηc2(1D)K+) × B(ηc2(1D) → hcγ) < 3.7 × 10−5, B(B0 → ηc2(1D)K0S) × B(ηc2(1D) →hcγ) < 3.5 × 10−5, B(B0 → ηc2(1D)π−K+) × B(ηc2(1D) → hcγ) < 1.0 × 10−4, andB(B+ → ηc2(1D)π+K0S) × B(ηc2(1D) → hcγ) < 1.1 × 10−4 at 90% C. L. The analysis isbased on the 711 fb−1 data sample collected on the Υ(4S) resonance by the Belle detector,which operated at the KEKB asymmetric-energy e+e− collider.