Measurement of the e+e-→J/ψcc̄ cross section at s 10.6GeV

P. Pakhlov, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, A. Bondar, M. Bračko, J. Brodzicka, T. E. Browder, M. C. Chang, P. Chang, A. Chen, B. G. Cheon, R. Chistov, S. K. ChoiY. Choi, M. Danilov, M. Dash, A. Drutskoy, W. Dungel, S. Eidelman, D. Epifanov, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, B. Y. Han, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, H. Kawai, T. Kawasai, H. Kichimi, H. O. Kim, Y. I. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krian, P. Krokovny, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, M. J. Lee, S. E. Lee, T. Lesiak, S. W. Lin, Y. Liu, D. Liventsev, R. Louvot, F. Mandl, A. Matyja, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, Y. Nagasaka, M. Nakao, H. Nakazawa, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, S. Stanič, M. Starič, T. Sumiyoshi, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, A. Vinokurova, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

研究成果: Article査読

64 被引用数 (Scopus)


We present a new measurement of the e+e-→J/ψcc̄ cross section where the cc̄ pair can fragment either into charmed hadrons or a charmonium state. In the former case the J/ψ and a charmed hadron are reconstructed, while the latter process is measured using the recoil mass technique, which allows the identification of two-body final states without reconstruction of one of the charmonia. The measured e+e-→J/ψcc̄ cross section is (0.74±0.08+0.09-0.08)pb, and the e+e-→J/ψXnon- cc̄ cross section is (0.43±0.09±0.09)pb. We note that the measured cross sections are obtained from a data sample with the multiplicity of charged tracks in the event larger than 4; corrections for the effect of this requirement are not performed as this cannot be done in a model-independent way. The analysis is based on a data sample with an integrated luminosity of 673fb-1 recorded near the Υ(4S) resonance with the Belle detector at the KEKB e+e- asymmetric-energy collider.

ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
出版ステータスPublished - 2009 4月 1

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 物理学および天文学(その他)


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