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Chekelian, V. Chobanova, V. Gaur, V. Savinov, V. Shebalin, V. Trusov, V. Vorobyev, V. Zhilich, V. Zhulanov, W. Bartel, W. Ostrowicz, W.-S. Hou, W. W. Jacobs, X. H. He, X. Li, X. L. Wang, Y. Arita, Y. Ban, Y. B. Hsiung, Y. Chao, Y. Choi, Y. F. Tse, Y. Hasegawa, Y. Hoshi, Y. Igarashi, Y. Iwasaki, Y. J. Kim, Y.-J. Kwon, Y. Kato, Y. Koga, Y. Kuroki, Y. L. Han, Y. Li, Y. Liu, Y. M. Goh, Y. Mikami, Y. Miyachi, Y. Miyazaki, Y. Nagasaka, Y. Nakahama, Y. Ono, Y. Onuki, Y. Sakai, Y. Sato, Y. Soloviev, Y.-S. Sohn, Y. Teramoto, Y.-T. Lai, Y. Uchida, Y. Unno, Y. Ushiroda, Y. Usov, Y. Watanabe, Y. Yamashita, Y. Yook, Y. Yusa, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. Natkaniec, Z. P. Zhang, Z. Q. Liu, Z. Suzuki","submitted_at":"2015-05-29T12:40:35Z","abstract_excerpt":"We present an extraction of azimuthal correlations between two pairs of charged pions detected in opposite jets from electron-positron annihilation. These correlations may arise from the dependence of the di-pion fragmentation on the polarization of the parent quark in the process $e^+e^- \\rightarrow q \\bar{q}$. 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