High statistics study of the f0(980) resonance in γγ→π +π- production

T. Mori, S. Uehara, Y. Watanabe, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. BračkoJ. Brodzicka, T. E. Browder, M. C. Chang, P. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, T. Gershon, B. Golob, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, H. Kawai, T. Kawasaki, H. R. Khan, A. Kibayashi, H. Kichimi, Y. J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, Y. Nagasaka, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, S. Ono, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, R. Seidl, 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, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsuboyama, T. Tsukamoto, T. Uglov, S. Uno, P. Urquijo, Y. Usov, G. Varner, S. Villa, C. C. Wang, C. H. Wang, E. Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

Research output: Contribution to journalArticle

84 Citations (Scopus)

Abstract

We report on a high statistics measurement of the cross section of the process γγ→π+π- in the π+π- invariant mass range 0.8GeV/c2<W<1.5GeV/c2 with 85.9fb-1 of data collected at s=10.58GeV and 10.52 GeV with the Belle detector. A clear signal for the f0(980) resonance is observed. From a fit to the mass spectrum, the mass, π+π- and two-photon decay widths of the resonance are found to be 985.6-1.5+1.2(stat)-1.6+1.1(syst) MeV/c2, 34.2-11.8+13.9(stat)-2.5+8.8(syst)MeV, and 205-83+95(stat)-117+147(syst) eV, respectively.

Original languageEnglish
Article number051101
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number5
DOIs
Publication statusPublished - 2007 Mar 13

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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