Observation of Transverse Polarization Asymmetries of Charged Pion Pairs ine+e−Annihilation nears=10.58 GeV
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ID: 271542
2011
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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 672 fb−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.
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| Authors | Anselm Vossen,R. Seidl,I. Adachi,H. Aihara,T. Aushev,V. Balagura,W. Bartel,M. Bischofberger,A. Bondar,M. Bracko,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,Akimasa 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,Shohei Nishida,O. Nitoh,A. Ogawa,T. Ohshima,S. Okuno,Galina Pakhlova,H. K. Park,M. Petric,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,Elena 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,Min-Zu Wang,P. Wang,Y. Watanabe,E. Won,B. D. Yabsley,Y. Yamashita,V. Zhilich,P. Zhou,V. Zhulanov,Belle Collaboration;Anselm Vossen;R. Seidl;I. Adachi;H. Aihara;T. Aushev;V. Balagura;W. Bartel;M. Bischofberger;A. Bondar;M. Bracko;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;Akimasa 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;Shohei Nishida;O. Nitoh;A. Ogawa;T. Ohshima;S. Okuno;Galina Pakhlova;H. K. Park;M. Petric;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;Elena 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;Min-Zu Wang;P. Wang;Y. Watanabe;E. Won;B. D. Yabsley;Y. Yamashita;V. Zhilich;P. Zhou;V. Zhulanov;Belle Collaboration; |
| Journal | physical review letters |
| Year | 2011 |
| DOI |
10.1103/physrevlett.107.072004
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| URL | |
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