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Observation of transverse polarization asymmetries of charged pion pairs in e +e - annihilation near √s=10.58GeV

  • A. Vossen
  • , R. Seidl
  • , I. Adachi
  • , H. Aihara
  • , T. Aushev
  • , V. Balagura
  • , W. Bartel
  • , M. Bischofberger
  • , A. Bondar
  • , M. Bračko
  • , T. E. Browder
  • , M. C. Chang
  • , A. Chen
  • , P. Chen
  • , B. G. Cheon
  • , K. Cho
  • , Y. Choi
  • , S. Eidelman
  • , M. Feindt
  • , V. Gaur
  • N. Gabyshev, A. Garmash, B. Golob, M. Grosse Perdekamp, J. Haba, K. Hayasaka, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, H. Kichimi, H. O. Kim, M. J. Kim, B. R. Ko, T. Kumita, J. S. Lange, M. J. Lee, S. H. Lee, M. Leitgab, Y. Li, C. Liu, D. Liventsev, R. Louvot, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, E. Nakano, S. Nishida, O. Nitoh, A. Ogawa, T. Ohshima, S. Okuno, G. Pakhlova, H. Park, H. K. Park, M. Petrič, L. E. Piilonen, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, O. Seon, M. Shapkin, V. Shebalin, T. A. Shibata, J. G. Shiu, P. Smerkol, Y. S. Sohn, E. Solovieva, S. Stanič, M. Starič, M. Sumihama, T. Sumiyoshi, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, A. Vinokurova, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamashita, V. Zhilich, P. Zhou, V. Zhulanov
  • University of Illinois at Urbana-Champaign
  • Indiana University Bloomington
  • Riken BNL Research Center
  • High Energy Accelerator Research Organization (KEK)
  • University of Tokyo
  • Institute for Theoretical and Experimental Physics
  • ENAC-IIC-GEL
  • c/o DESY
  • Nara Women's University
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Novosibirsk State University
  • Department of Biochemistry and Molecular and Structural Biology
  • University of Maribor
  • University of Hawaii
  • Fu Jen Catholic University
  • National Central University
  • National Taiwan University
  • Hanyang University
  • Korea Institute of Science and Technology Information
  • Sungkyunkwan University
  • Institute of Meteorology and Climate Research
  • Tata Institute of Fundamental Research, Mumbai
  • University of Ljubljana
  • Nagoya University
  • Tohoku University
  • Tohoku Gakuin University
  • Kyungpook National University
  • Saga University
  • Yonsei University
  • Korea University
  • Tokyo Metropolitan University
  • Justus-Liebig-Universität Giessen
  • Seoul National University
  • Virginia Polytechnic Institute and State University
  • University of Science and Technology of China
  • University of Sydney
  • Niigata University
  • Osaka City University
  • Tokyo University of Agriculture and Technology
  • Kanagawa University
  • Institut für Hochenergiephysik
  • Kurchatov Institute
  • Research Center for Nuclear Physics
  • Tokyo Institute of Technology
  • University of Nova Gorica
  • Gifu University
  • National United University Taiwan
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • Nippon Dental University
  • Wayne State University

Research output: Contribution to journalArticlepeer-review

117 Citations (Scopus)

Abstract

The interference fragmentation function translates the fragmentation of a quark with a transverse projection of the spin into an azimuthal asymmetry of two final-state hadrons. In e +e - annihilation the product of two interference fragmentation functions is measured. We report nonzero asymmetries for pairs of charge-ordered π +π - pairs, which indicate a significant interference fragmentation function in this channel. The results are obtained from a 672fb -1 data sample that contains 711×106 π +π - pairs and was collected at and near the Υ(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e +e - collider.

Original languageEnglish
Article number072004
JournalPhysical Review Letters
Volume107
Issue number7
DOIs
Publication statusPublished - 12 Aug 2011
Externally publishedYes

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