Updated Cross Section Measurement of $e^+ e^- \to K^+ K^- J/\psi$ and $K_S^0K_S^0J/\psi$ via Initial State Radiation at Belle

C P Shen,C Z Yuan,Pengpeng Wang,A Abdesselam, I Adachi,H Aihara,S Al Said,D M Asner,V Aulchenko,T Aushev,R Ayad,A M Bakich,A Bala,A Bobrov,G Bonvicini, A Bozek,M Bracko,T E Browder,V Chekelian, Anping Chen,B G Cheon,K Chilikin,R Chistov,K Cho,V Chobanova,Sung Kyu Choi,Yongseok Choi,D Cinabro,J Dalseno,M Danilov,Z Doležal,A Drutskoy,Dipanwita Dutta,S Eidelman,D Epifanov,H Farhat,J Fast,T Ferber, A Frey,V Gaur,Sanmay Ganguly,R Gillard, R Glattauer,Y M Goh,B Golob,J Haba,Kazuhiro Hayasaka, H Hayashii,X H He,Y Hoshi,W S Hou,Y B Hsiung,H J Hyun,Takesi Iijima,A Ishikawa,R Itoh,Yukimoto Iwasaki, D Joffe,T Julius,J H Kang,Eiichi Kato,Teruaki Kawasaki,C Kiesling,D Y Kim,Hyun Jung Kim,Joon Bum Kim,K T Kim,M J Kim,Y J Kim,K Kinoshita,B R Ko,P Kodys,S Korpar,P Križan,P Krokovny,A Kuzmin,Y J Kwon,S H Lee,Jie Li,L Li Gioi,J Libby,Chang Liu,Z Q Liu,P Lukin,D Matvienko,K Miyabayashi,H Miyata,R Mizuk,A Moll,R Mussa, Y Nagasaka,E Nakano,M Nakao,Z Natkaniec,M Nayak,E Nedelkovska,N K Nisar,S Nishida,O Nitoh,S Okuno,C W Park,Hyangkyu Park, T K Pedlar, R Pestotnik, M Petric,L E Piilonen,Michael Matthias Ritter, M Roehrken,A Rostomyan,S Ryu, Tamio Saito, Yoshiyuki Sakai,T Sanuki,Y Sato,O Schneider, G Schnell,D Semmler,K Senyo,O Seon,M E Sevior,M Shapkin, V Shebalin,T A Shibata,J G Shiu,B Shwartz,A Sibidanov, Francisco Marco Simon,Y S Sohn,A Sokolov,E Solovieva, S Stanic, M Staric, M Steder,T Sumiyoshi,U Tamponi,G Tatishvili,Y Teramoto,Makoto Uchida, Y Unno,S Uno,P Urquijo,Y Usov,C Van Hulse,P Vanhoefer, G Varner,V Vorobyev,M N Wagner,C H Wang,Masahiko Watanabe,Yuko Watanabe,K M Williams,E Won,Hitoshi Yamamoto,Yoshihiro Yamashita, S Yashchenko, Y Yook, C C Zhang, Z P Zhang,V Zhulanov, A Zupanc

PHYSICAL REVIEW D（2014）

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摘要

The cross sections of the processes e(+)e(-)-> K(+)K(-)J/Psi and K(s)(0)K(s)(0)J/Psi are measured via initial state radiation at center-of-mass energies between the threshold and 6.0 GeV using a data sample of 980 fb(-1) collected with the Belle detector on or near the r(nS) resonances, where n=1,2,..5. The cross sections for e(+)e(-)-> K(+)K(-)J/Psi are at a few pb level and the average cross section for K(s)(0)K(s)(0)J/Psi is 1.8 +/- 0.6 (stat)+/- 0.3(syst) pb between 4.4 and 5.2 GeV. All of them are consistent with previously published results with improved precision. A search for resonant structures and associated intermediate states in the cross section of the process e(+)e(-)-> K(+)K(-)J/Psi is performed.

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