文档介绍：arXiv:hep-ex/0604031v1 14 Apr 2006 B AB AR-PUB-06/027 SLAC-PUB-11817 Observation ofΥ(4S) decays toπ+π?Υ(1S) andπ+π?Υ(2S) B. Aubert, 1R. Barate, 1M. Bona, 1D. Boutigny, 1F. Couderc, 1Y. Karyotakis, 1J. P. Lees, 1V. Poireau, 1 V. Tisserand, 1A. Zghiche, 1E. Grauges, 2A. Palano, 3J. C. Chen, 4N. D. Qi, 4G. Rong, 4P. Wang, 4Y. S. Zhu, 4 G. Eigen, 5I. Ofte, 5B. Stugu, 5G. S. Abrams, 6M. Battaglia, 6D. N. Brown, 6J. Button-Shafer, 6R. N. Cahn, 6 E. Charles, 6M. S. Gill, 6Y. Groysman, 6R. G. Jacobsen, 6J. A. Kadyk, 6L. T. Kerth, 6Yu. G. Kolomensky, 6 G. Kukartsev, 6G. Lynch, 6L. M. Mir, 6P. J. Oddone, 6T. J. Orimoto, 6M. Pripstein, 6N. A. Roe, 6M. T. Ronan, 6 W. A. Wenzel, 6M. Barrett, 7K. E. Ford, 7T. J. Harrison, 7A. J. Hart, 7C. M. Hawkes, 7S. E. Morgan, 7 A. T. Watson, 7K. Goetzen, 8T. Held, 8H. Koch, 8B. Lewandowski, 8M. Pelizaeus, 8K. Peters, 8T. Schroeder, 8 M. Steinke, 8J. T. Boyd, 9J. P. Burke, 9W. N. Cottingham, 9D. Walker, 9T. Cuhadar-Donszelmann, 10 B. G. Fulsom, 10C. Hearty, 10N. S. Knecht, 10T. S. Mattison, 10J. A. McKenna, 10A. Khan, 11P. Kyberd, 11 M. Saleem, 11L. Teodorescu, 11V. E. Blinov, 12A. D. Bukin, 12V. P. Druzhinin, 12V. B. Golubev, 12 A. P. Onuchin, 12S. I. Serednyakov, 12Yu. I. Skovpen, 12E. P. Solodov, 12K. Yu Todyshev, 12D. S. Best, 13 M. Bondioli, 13M. Bruinsma, 13M. Chao, 13S. Curry, 13I. Eschrich, 13D. Kirkby, 13A. J. Lankford, 13P. Lund, 13 M. Mandelk