Observation of e+e-→K+K-J/ψ via initial-state radiation at Belle
Yuan, C.Z.; Shen, C.P.; Wang, P.; Wang, X.L.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bakich, A.M.; Balagura, V.; Barberio, E.; Belous, K.; Bitenc, U.; Bondar, A.; Bračko, M.; Brodzicka, J.; Browder, T.E.; Chao, Y.; Chen, A.; Chen, W.T.; Cheon, B.G.; Chistov, R.; Cho, I.-S.; Choi, Y.; Dalseno, J.; Danilov, M.; Das, A.; Dash, M.; Eidelman, S.; Epifanov, D.; Gabyshev, N.; Golob, B.; Ha, H.; Haba, J.; Hayasaka, K.; Hazumi, M.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, W.-S.; Hyun, H.J.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, Y.; Kah, D.H.; Kang, J.H.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, Y.J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kumar, R.; Kuo, C.C.; Kuzmin, A.; Kwon, Y.-J.; Lee, M.J.; Lee, S.E.; Lesiak, T.; Lin, S.-W.; Liventsev, D.; Mandl, F.; Matyja, A.; McOnie, S.; Medvedeva, T.; Mitaroff, W.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mohapatra, D.; Moloney, G.R.; Nagasaka, Y.; Nakao, M.; Nishida, S.; Nitoh, O.; Noguchi, S.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S.L.; Pakhlov, P.; Pakhlova, G.; Park, C.W.; Park, H.; Peak, L.S.; Piilonen, L.E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schümann, J.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Shibuya, H.; Shiu, J.-G.; Shwartz, B.; Singh, J.B.; Somov, A.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Takasaki, F.; Tamai, K.; Tanaka, M.; Teramoto, Y.; Tikhomirov, I.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Vervink, K.; Villa, S.; Wang, C.C.; Wang, C.H.; Watanabe, Y.; Won, E.; Yabsley, B.D.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Zhang, C.C.; Zhang, Z.P.; Zupanc, A.; Zyukova, O.
2008
Abstract
The process e+e-→K+K-J/ψ is observed for the first time via initial-state radiation. The cross section of e+e-→K+K-J/ψ for center-of-mass energies between threshold and 6.0 GeV is measured using 673fb-1 of data collected with the Belle detector on and off the Υ(4S) resonance. No significant signal for Y(4260)→K+K-J/ψ is observed, and we determine B(Y(4260)→K+K-J/ψ)Γ(Y(4260)→e+e-)<1.2eV/c2 at a 90% confidence level. We also find evidence for e+e-→KS0KS0J/ψ in the same data sample. © 2008 The American Physical Society.
Details
Title
Observation of e+e-→K+K-J/ψ via initial-state radiation at Belle
Author(s)
Yuan, C.Z. ; Shen, C.P. ; Wang, P. ; Wang, X.L. ; Adachi, I. ; Aihara, H. ; Arinstein, K. ; Aulchenko, V. ; Aushev, T. ; Bakich, A.M. ; Balagura, V. ; Barberio, E. ; Belous, K. ; Bitenc, U. ; Bondar, A. ; Bračko, M. ; Brodzicka, J. ; Browder, T.E. ; Chao, Y. ; Chen, A. ; Chen, W.T. ; Cheon, B.G. ; Chistov, R. ; Cho, I.-S. ; Choi, Y. ; Dalseno, J. ; Danilov, M. ; Das, A. ; Dash, M. ; Eidelman, S. ; Epifanov, D. ; Gabyshev, N. ; Golob, B. ; Ha, H. ; Haba, J. ; Hayasaka, K. ; Hazumi, M. ; Heffernan, D. ; Hokuue, T. ; Hoshi, Y. ; Hou, W.-S. ; Hyun, H.J. ; Inami, K. ; Ishikawa, A. ; Ishino, H. ; Itoh, R. ; Iwasaki, Y. ; Kah, D.H. ; Kang, J.H. ; Kawai, H. ; Kawasaki, T. ; Kichimi, H. ; Kim, Y.J. ; Kinoshita, K. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kumar, R. ; Kuo, C.C. ; Kuzmin, A. ; Kwon, Y.-J. ; Lee, M.J. ; Lee, S.E. ; Lesiak, T. ; Lin, S.-W. ; Liventsev, D. ; Mandl, F. ; Matyja, A. ; McOnie, S. ; Medvedeva, T. ; Mitaroff, W. ; Miyabayashi, K. ; Miyake, H. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Mohapatra, D. ; Moloney, G.R. ; Nagasaka, Y. ; Nakao, M. ; Nishida, S. ; Nitoh, O. ; Noguchi, S. ; Nozaki, T. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Olsen, S.L. ; Pakhlov, P. ; Pakhlova, G. ; Park, C.W. ; Park, H. ; Peak, L.S. ; Piilonen, L.E. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Schümann, J. ; Senyo, K. ; Sevior, M.E. ; Shapkin, M. ; Shibuya, H. ; Shiu, J.-G. ; Shwartz, B. ; Singh, J.B. ; Somov, A. ; Stanič, S. ; Starič, M. ; Sumiyoshi, T. ; Takasaki, F. ; Tamai, K. ; Tanaka, M. ; Teramoto, Y. ; Tikhomirov, I. ; Uehara, S. ; Uglov, T. ; Unno, Y. ; Uno, S. ; Urquijo, P. ; Usov, Y. ; Varner, G. ; Vervink, K. ; Villa, S. ; Wang, C.C. ; Wang, C.H. ; Watanabe, Y. ; Won, E. ; Yabsley, B.D. ; Yamaguchi, A. ; Yamashita, Y. ; Yamauchi, M. ; Zhang, C.C. ; Zhang, Z.P. ; Zupanc, A. ; Zyukova, O.
Published in
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume
77
Issue
1
Pages
011105
Date
2008
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Laboratories
LPHE
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Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
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Work produced at EPFL
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Peer-reviewed publications
Work produced at EPFL
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Record creation date
2010-11-05