| Literature DB >> 23829730 |
Z Q Liu1, C P Shen, C Z Yuan, I Adachi, H Aihara, D M Asner, V Aulchenko, T Aushev, T Aziz, A M Bakich, A Bala, K Belous, V Bhardwaj, B Bhuyan, M Bischofberger, A Bondar, G Bonvicini, A Bozek, M Bračko, J Brodzicka, T E Browder, P Chang, V Chekelian, A Chen, P Chen, B G Cheon, R Chistov, K Cho, V Chobanova, S-K Choi, Y Choi, D Cinabro, J Dalseno, M Danilov, Z Doležal, Z Drásal, A Drutskoy, D Dutta, K Dutta, S Eidelman, D Epifanov, H Farhat, J E Fast, M Feindt, T Ferber, A Frey, V Gaur, N Gabyshev, S Ganguly, R Gillard, Y M Goh, B Golob, J Haba, K Hayasaka, H Hayashii, Y Horii, Y Hoshi, W-S Hou, Y B Hsiung, H J Hyun, T Iijima, K Inami, A Ishikawa, R Itoh, Y Iwasaki, D Joffe, T Julius, D H Kah, J H Kang, T Kawasaki, C Kiesling, H J Kim, J B Kim, J H Kim, K T Kim, M J Kim, Y J Kim, K Kinoshita, J Klucar, B R Ko, P Kodyš, S Korpar, P Križan, P Krokovny, T Kuhr, Y-J Kwon, J S Lange, S-H Lee, J Li, Y Li, J Libby, C Liu, P Lukin, D Matvienko, K Miyabayashi, H Miyata, R Mizuk, G B Mohanty, A Moll, R Mussa, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, M Nayak, E Nedelkovska, N K Nisar, S Nishida, O Nitoh, S Ogawa, S Okuno, S L Olsen, Y Onuki, W Ostrowicz, C Oswald, P Pakhlov, G Pakhlova, H Park, H K Park, T K Pedlar, R Pestotnik, M Petrič, L E Piilonen, M Ritter, M Röhrken, A Rostomyan, H Sahoo, T Saito, Y Sakai, S Sandilya, D Santel, T Sanuki, Y Sato, V Savinov, O Schneider, G Schnell, C Schwanda, R Seidl, D Semmler, K Senyo, O Seon, M E Sevior, M Shapkin, T-A Shibata, J-G Shiu, B Shwartz, A Sibidanov, F Simon, P Smerkol, Y-S Sohn, A Sokolov, E Solovieva, M Starič, M Steder, M Sumihama, T Sumiyoshi, U Tamponi, K Tanida, G Tatishvili, Y Teramoto, K Trabelsi, T Tsuboyama, M Uchida, S Uehara, T Uglov, Y Unno, S Uno, S E Vahsen, C Van Hulse, P Vanhoefer, G Varner, K E Varvell, V Vorobyev, M N Wagner, C H Wang, M-Z Wang, P Wang, X L Wang, M Watanabe, Y Watanabe, E Won, B D Yabsley, J Yamaoka, Y Yamashita, S Yashchenko, Y Yook, Y Yusa, C C Zhang, Z P Zhang, V Zhilich, A Zupanc.
Abstract
The cross section for ee+ e- → π+ π- J/ψ between 3.8 and 5.5 GeV is measured with a 967 fb(-1) data sample collected by the Belle detector at or near the Υ(nS) (n = 1,2,…,5) resonances. The Y(4260) state is observed, and its resonance parameters are determined. In addition, an excess of π+ π- J/ψ production around 4 GeV is observed. This feature can be described by a Breit-Wigner parametrization with properties that are consistent with the Y(4008) state that was previously reported by Belle. In a study of Y(4260) → π+ π- J/ψ decays, a structure is observed in the M(π(±)J/ψ) mass spectrum with 5.2σ significance, with mass M = (3894.5 ± 6.6 ± 4.5) MeV/c2 and width Γ = (63 ± 24 ± 26) MeV/c2, where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmoniumlike state.Entities:
Year: 2013 PMID： 23829730 DOI： 10.1103/PhysRevLett.110.252002
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161