Observation of a vector charmoniumlike state in e+e-→ Ds+ Ds1 (2536)-+ c. c.

S. Jia, C. P. Shen, C. Z. Yuan, X. L. Wang, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, V. Aulchenko, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, P. Behera, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. BozekM. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, G. De Nardo, F. Di Capua, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, K. Hayasaka, H. Hayashii, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, Y. Jin, K. K. Joo, K. H. Kang, G. Karyan, H. Kichimi, B. H. Kim, C. H. Kim, D. Y. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, R. Kroeger, P. Krokovny, R. Kulasiri, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, S. C. Lee, P. Lewis, C. H. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, C. MacQueen, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, R. Mussa, K. J. Nath, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, K. Nishimura, S. Ogawa, H. Ono, Y. Onuki, P. Oskin, P. Pakhlov, G. Pakhlova, T. Pang, S. Pardi, H. Park, S. H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, V. Popov, E. Prencipe, M. T. Prim, M. Röhrken, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, J. G. Shiu, B. Shwartz, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, Z. S. Stottler, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Usov, R. Van Tonder, G. Varner, A. Vinokurova, V. Vorobyev, C. H. Wang, M. Z. Wang, M. Watanabe, E. Won, S. B. Yang, H. Ye, J. H. Yin, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

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Abstract

Using a data sample of 921.9 fb-1 collected with the Belle detector, we study the process of e+e-→Ds+Ds1(2536)-+c.c. via initial-state radiation. We report the first observation of a vector charmoniumlike state decaying to Ds+Ds1(2536)-+c.c. with a significance of 5.9σ, including systematic uncertainties. The measured mass and width are (4625.9-6.0+6.2(stat)±0.4(syst)) MeV/c2 and (49.8-11.5+13.9(stat)±4.0(syst)) MeV, respectively. The product of the e+e-→Ds+Ds1(2536)-+c.c. cross section and the branching fraction of Ds1(2536)-→D∗0K-is measured from the DsDs1(2536) threshold to 5.59 GeV.

Original languageEnglish
Article number111103
JournalPhysical Review D
Volume100
Issue number11
DOIs
Publication statusPublished - 2019 Dec 31

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Jia, S., Shen, C. P., Yuan, C. Z., Wang, X. L., Adachi, I., Aihara, H., Asner, D. M., Atmacan, H., Aulchenko, V., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Behera, P., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., ... Zhulanov, V. (2019). Observation of a vector charmoniumlike state in e+e-→ Ds+ Ds1 (2536)-+ c. c. Physical Review D, 100(11), [111103]. https://doi.org/10.1103/PhysRevD.100.111103