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High statistics measurement of the cross sections of γγ → π +π - production

  • T. Mori
  • , S. Uehara
  • , Y. Watanabe
  • , K. Abe
  • , I. Adachi
  • , H. Aihara
  • , K. Arinstein
  • , V. Aulchenko
  • , T. Aushev
  • , A. M. Bakich
  • , V. Balagura
  • , E. Barberio
  • , A. Bay
  • , K. Belous
  • , U. Bitenc
  • , I. Bizjak
  • , S. Blyth
  • , A. Bondar
  • , M. Bračko
  • , T. E. Browder
  • M. C. Chang, A. Chen, W. T. Chen, B. G. Cheon, I. S. Cho, S. K. Choi, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, B. Golob, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W. S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, H. O. Kim, S. K. Kim, Y. J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, T. Matsumoto, A. Matyja, S. Mconie, T. Medvedeva, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Ohshima, S. Okuno, S. L. Olsen, S. Ono, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, N. Satoyama, O. Schneider, J. Schümann, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsuboyama, T. Tsukamoto, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, P. Wang, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc
  • Nagoya University
  • High Energy Accelerator Research Organization, Tsukuba
  • Kanagawa University
  • Tohoku Gakuin University
  • The University of Tokyo
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Swiss Federal Institute of Technology Lausanne
  • The University of Sydney
  • University of Melbourne
  • Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’
  • Jožef Stefan Institute
  • National Central University
  • University of Maribor
  • University of Hawai'i at Mānoa
  • Fu Jen Catholic University
  • Hanyang University
  • Yonsei University
  • Gyeongsang National University
  • Sungkyunkwan University
  • Virginia Polytechnic Institute and State University
  • University of Cincinnati
  • University of Ljubljana
  • Korea University
  • Nara Women's University
  • The University of Osaka
  • National Taiwan University
  • Polish Academy of Sciences
  • Niigata University
  • Seoul National University
  • The Graduate University for Advanced Studies
  • Panjab University
  • Austrian Academy of Sciences
  • Tokyo Metropolitan University
  • Hiroshima Institute of Technology
  • Osaka Metropolitan University
  • Tokyo University of Agriculture and Technology
  • Institute of Science Tokyo
  • Riken BNL Research Center
  • Kyungpook National University
  • Shinshu University
  • CAS - Institute of High Energy Physics
  • Toho University
  • University of Nova Gorica
  • Peking University
  • National United University Taiwan
  • Tohoku University
  • Nippon Dental University
  • University of Science and Technology of China

Research output: Contribution to journal › Article › peer-review

Abstract

We report on a high statistics measurement of the total and differential cross sections of the process γγ → π +π - in the π +π - invariant mass range 0.8 GeV/c 2 < W < 1.5 GeV/c 2 with 85.9 fb -1 of data collected at √s = 10.58 GeV and 10.52 GeV with the Belle detector. A clear signal of the f 0(980) resonance is observed in addition to the f 2(1270) resonance. An improved 90% confidence level upper limit ℬ(η′(958) → π +π - < 2.9 × 10 -3 is obtained for P- and CP-violating decay of the η′(958) meson using the most conservative assumption about the interference with the background.

Original languageEnglish
Article number074102
JournalJournal of the Physical Society of Japan
Volume76
Issue number7
DOIs
StatePublished - Jul 2007
Externally publishedYes

Keywords

  • F (980), f (1270)
  • Two-photon production
  • γγ → π π cross section
  • η′(958)

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