| Autor: |
Gao, X. Y., Li, Y., Belous, K., Kuzmin, A., Kwon, Y.-J., Lai, Y.-T., Lam, T., Lange, J. S., Laurenza, M., Lee, S. C., Li, C. H., Li, J., Li, L. K., Bessner, M., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Martini, A., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., Bhardwaj, V., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mussa, R., Nakao, M., Natkaniec, Z., Natochii, A., Bhuyan, B., Nayak, L., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Bilka, T., Pang, T., Pardi, S., Park, H., Park, S.-H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Bobrov, A., Popov, V., Prencipe, E., Prim, M. T., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sandilya, S., Sangal, A., Bodrov, D., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shiu, J.-G., Bonvicini, G., Simon, F., Singh, J. B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Takizawa, M., Borah, J., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uno, K., Uno, S., Urquijo, P., Usov, Y., Van Tonder, R., Varner, G., Bozek, A., Vinokurova, A., Waheed, E., Wang, E., Wang, M.-Z., Wang, X. L., Watanabe, M., Watanuki, S., Won, E., Xu, X., Yabsley, B. D., Shen, C. P., Bračko, M., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Zhai, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M.-C., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Adachi, I., Cho, H. E., Cho, K., Cho, S.-J., Choi, S.-K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., De Pietro, G., Aihara, H., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Epifanov, D., Ferber, T., Frey, A., Fulsom, B. G., Asner, D. M., Garg, R., Gaur, V., Gabyshev, N., Giri, A., Goldenzweig, P., Gu, T., Guan, Y., Gudkova, K., Hadjivasiliou, C., Halder, S., Atmacan, H., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W.-S., Hsu, C.-L., Iijima, T., Inguglia, G., Inami, K., Ishikawa, A., Aushev, T., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E.-J., Jia, S., Jin, Y., Joo, K. K., Kahn, J., Kaliyar, A. B., Ayad, R., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K.-H., Kim, Y.-K., Kodyš, P., Behera, P., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, R., Kumara, K. |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Physical review / D 105(3), 032002 (2022). doi:10.1103/PhysRevD.105.032002 |
| Popis: |
A search for double-heavy tetraquark state candidates Xcc¯s¯s decaying to D+sD+s and D*+sD*+s is presented for the first time using the data samples of 102×106 Υ(1S) and 158×106 Υ(2S) events, and the data samples at √s=10.52, 10.58, and 10.867 GeV corresponding to integrated luminosities of 89.5, 711.0, and 121.4 fb−1, respectively, accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. The invariant-mass spectra of the D+sD+s and D*+sD*+s are studied to search for possible resonances. No significant signals are observed, and the 90% confidence level upper limits on the product branching fractions [B(Υ(1S,2S)→Xcc¯s¯s+anything)×B(Xcc¯s¯s→D+sD+s(D*+sD*+s))] in Υ(1S,2S) inclusive decays and the product values of Born cross section and branching fraction [σ(e+e−→Xcc¯s¯s+anything)×B(Xcc¯s¯s→D+sD+s(D*+sD*+s))] in e+e− collisions at √s=10.52, 10.58, and 10.867 GeV under different assumptions of Xcc¯s¯s masses and widths are obtained. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
