Evidence for a vector charmoniumlike state in e+e−→Ds+Ds2*(2573)−+c.c.
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Jia, S.; Shen, C. P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Badhrees, I.; Behera, P.; Belous, K.; Bennett, J.; Besson, D.; Bhardwaj, V.; Bilka, T.; Biswal, J.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T. E.; Campajola, M.; Červenkov, D.; Chang, P.; Chen, A.; Cheon, B. G.; Chilikin, K.; 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. V.; Eidelman, S.; Epifanov, D.; Fast, J. E.; Ferber, T.; Ferlewicz, D.; Fulsom, B. G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Golob, B.; Grzymkowska, O.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hou, W.S.; Hsu, C.L.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jeon, H. B.; Jin, Y.; Joo, K. K.; Karyan, G.; Kawasaki, T.; Kiesling, C.; Kim, B. H.; Kim, D. Y.; Kim, K.H.; Kim, S. H.; Kim, Y.K.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; Križan, P.; Kroeger, R.; Krokovny, P.; Kulasiri, R.; Kuzmin, A.; Kwon, Y.J.; Lalwani, K.; Lange, J. S.; Lee, S. C.; Li, L. K.; Li, Y. B.; Li Gioi, L.; Libby, J.; Lieret, K.; Liventsev, D.; MacNaughton, J.; MacQueen, C.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Mizuk, R.; Moon, T. J.; Mori, T.; Mrvar, M.; Nakao, M.; Nayak, M.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Ono, H.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Pardi, S.; Patra, S.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Podobnik, T.; Popov, V.; Prencipe, E.; Prim, M. T.; Rostomyan, A.; Rout, N.; Russo, G.; Sakai, Y.; Sandilya, S.; Santelj, L.; Sanuki, T.; Savinov, V.; Schnell, G.; Schueler, J.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shebalin, V.; Shiu, J.G.; Shwartz, B.; Solovieva, E.; Stanič, S.; Starič, M.; Stottler, Z. S.; Strube, J. F.; Sumihama, M.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tanida, K.; Tenchini, F.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Usov, Y.; Van Tonder, R.; Varner, G.; Vinokurova, A.; Wang, C. H.; Wang, E.; Wang, M.Z.; Wang, P.; Wang, X. L.; Watanabe, M.; Won, E.; Xu, X.; Yan, W.; Yang, S. B.; Ye, H.; Yuan, C. Z.; Yusa, Y.; Zhang, Z. P.; Zhilich, V.; Zhukova, V.; Zhulanov, V.;
Evidence for a vector charmoniumlike state in e+e−→Ds+Ds2*(2573)−+c.c.
We report the measurement of e+e−→Ds+Ds2*(2573)−+c.c. via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb−1 collected with the Belle detector at the ϒ(4S) and nearby. We find evidence for an enhancement with a 3.4σ significance in the invariant mass of Ds+Ds2*(2573)−+c.c. The measured mass and width are (4619.8−8.0+8.9(stat.)±2.3(syst.)) MeV/c2 and (47.0−14.8+31.3(stat.)±4.6(syst.)) MeV, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmoniumlike state at 4626 MeV/c2 recently reported by Belle in e+e−→Ds+Ds1(2536)−+c.c. The product of the e+e−→Ds+Ds2*(2573)−+c.c. cross section and the branching fraction of Ds2*(2573)−→D¯0K− is measured from Ds+Ds2*(2573)− threshold to 5.6 GeV.
- Fudan University China (People's Republic of)
- Chinese Academy of Sciences China (People's Republic of)
- Chinese Academy of Sciences
- University of Cincinnati United States
- Austrian Academy of Sciences Austria
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