A study of γ γ → KS0 KS0 production at energies from 2.4 to 4.0 GeV at Belle

W. T. Chen, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, M. C. Chang, P. ChangY. Chao, A. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, A. Go, H. Ha, M. Hazumi, D. Heffernan, T. Higuchi, T. Hokuue, Y. Hoshi, W. S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, H. Kaji, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. O. Kim, Y. J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, S. E. Lee, T. Lesiak, S. W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, S. McOnie, T. Medvedeva, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, S. Y. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, S. Villa, C. C. Wang, C. H. Wang, M. Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

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Abstract

KS0 KS0 production in two-photon collisions has been studied using a 397.6 fb-1 data sample collected with the Belle detector at the KEKB e+ e- collider. For the first time the cross sections are measured in the two-photon center-of-mass energy range between 2.4 GeV and 4.0 GeV and angular range | cos θ* | < 0.6. Combining the results with measurements of γ γ → K+ K- from Belle, we observe that the cross section ratio σ (KS0 KS0) / σ (K+ K-) decreases from ∼0.13 to ∼0.01 with increasing energy. Signals for the χc 0 and χc 2 charmonium states are also observed.

Original languageEnglish
Pages (from-to)15-21
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume651
Issue number1
DOIs
Publication statusPublished - Jul 19 2007

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Keywords

  • Charmonium
  • Mesons
  • QCD
  • Two-photon collisions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Chen, W. T., Abe, K., Abe, K., Adachi, I., Aihara, H., Anipko, D., Aulchenko, V., Bakich, A. M., Barberio, E., Bay, A., Bedny, I., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., Chang, M. C., ... Zupanc, A. (2007). A study of γ γ → KS0 KS0 production at energies from 2.4 to 4.0 GeV at Belle. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 651(1), 15-21. https://doi.org/10.1016/j.physletb.2007.05.059