e+e- -> pi+pi-pi+pi- 截面的初态辐射测量
高能物理 - 实验
2013-05-30 v2
摘要
我们利用在 SLAC 使用 BABAR 探测器收集的 454.3 fb^-1 数据（对应约 260,000 个信号事例），研究了过程 e+e- -> pi+pi-pi+pi-gamma，其中光子由初态电子或正电子发射。我们利用这些数据提取了能量范围从 0.6 到 4.5 GeV 的非辐射截面 sigma(e+e- -> pi+pi-pi+pi-)。在峰值区域，截面测量的总不确定度小于 3%，其精度高于从能量扫描数据获得的相应结果。
引用
@article{arxiv.1201.5677,
title = {Initial-State Radiation Measurement of the e+e- -> pi+pi-pi+pi- Cross Section},
author = {J. P. Lees and V. Poireau and V. Tisserand and J. Garra Tico and E. Grauges and M. Martinelli and D. A. Milanes and A. Palano and M. Pappagallo and G. Eigen and B. Stugu and D. N. Brown and L. T. Kerth and Yu. G. Kolomensky and G. Lynch and H. Koch and T. Schroeder and D. J. Asgeirsson and C. Hearty and T. S. Mattison and J. A. McKenna and A. Khan and V. E. Blinov and A. R. Buzykaev and V. P. Druzhinin and V. B. Golubev and E. A. Kravchenko and A. P. Onuchin and S. I. Serednyakov and Yu. I. Skovpen and E. P. Solodov and K. Yu. Todyshev and A. N. Yushkov and M. Bondioli and D. Kirkby and A. J. Lankford and M. Mandelkern and D. P. Stoker and H. Atmacan and J. W. Gary and F. Liu and O. Long and G. M. Vitug and C. Campagnari and T. M. Hong and D. Kovalskyi and J. D. Richman and C. A. West and A. M. Eisner and J. Kroseberg and W. S. Lockman and A. J. Martinez and T. Schalk and B. A. Schumm and A. Seiden and C. H. Cheng and D. A. Doll and B. Echenard and K. T. Flood and D. G. 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journal= {arXiv preprint arXiv:1201.5677},
year = {2013}
}