| Fast computation of observed cross section for ψ′ → PP decays |
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| 引用本文： | 王博群,莫晓虎,王平,班勇.Fast computation of observed cross section for ψ′ → PP decays[J].中国物理 C,2011,35(5):411-418. |
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| 作者姓名： | 王博群 莫晓虎 王平 班勇 |
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| 作者单位： | - School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
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| 基金项目： | National Natural Science Foundation of China，In- strument Developing Project of Chinese Academy of Sciences，Major State Basic Research Development Program，Knowledge Innovation Project of Chinese Academy of Sciences |
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| 摘 要： | It has been conjectured that the relative phase between strong and electromagnetic amplitudes is universally -90° in charmonium decays. ψ′ decaying into a pseudoscalar pair provides a possibility to test this conjecture. However, the experimentally observed cross section for such a process is depicted by the two-fold integral, which takes into account the initial state radiative (ISR) correction and energy spread effect. Using the generalized linear regression approach, a complex energy-dependent factor is ...
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| 关 键 词： | 计算时间 截面 衰变 聚丙烯 解析表达式 线性回归方法 粲夸克偶素 相对相位 |
Fast computation of observed cross section for ψ′ → PP decays |
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| WANG Bo-Qun , MO Xiao-Hu WANG Ping BAN Yong School of Physics , State Key Laboratory of Nuclear Physics , Technology,Peking University,Beijing ,China Institute of High Energy Physics,Chinese Academy of Sciences,Beijing ,China.Fast computation of observed cross section for ψ′ → PP decays[J].High Energy Physics and Nuclear Physics,2011,35(5):411-418. |
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| Authors: | WANG Bo-Qun MO Xiao-Hu WANG Ping BAN Yong School of Physics State Key Laboratory of Nuclear Physics Technology Peking University Beijing China Institute of High Energy Physics Chinese Academy of Sciences Beijing China |
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| Institution: | WANG Bo-Qun 1,2,1) MO Xiao-Hu 2 WANG Ping 2 BAN Yong 1 1 School of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China 2 Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | |
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| Keywords: | cross section narrow resonance pseudoscalar pair e e - collider |
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