Prospects on Determining Electric Dipole Moments of ∑ and Hyperons at BES

The electric dipole moment of ∑（or ） hyperon, d∑ （or d ）, can be detected by analyzing the angular distribution in the decay process of J/φ → ∑^0^-∑^0（ ）. The dependence of d∑ （or d ） on the free parameters describing the angular distribution is studied in detail with a Monte Carlo simulation based...

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Bibliographic Details
Published in:Chinese physics letters 2010, Vol.27 (5), p.48-50
Main Author: 张锋 高原宁 霍雷
Format: Article
Language:English
Subjects:
北京谱仪
电偶极矩
自由参数
蒙地卡罗
衰变过程
角分布
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Summary:The electric dipole moment of ∑（or ） hyperon, d∑ （or d ）, can be detected by analyzing the angular distribution in the decay process of J/φ → ∑^0^-∑^0（ ）. The dependence of d∑ （or d ） on the free parameters describing the angular distribution is studied in detail with a Monte Carlo simulation based on 10^9 J/φ events expected in one year data taking at BESⅢ. The result shows that an expected upper limit with 10^-16 ,- 10^-18 ecru on d∑ （or d ） can be achieved depending on the true values of free parameters.
ISSN:0256-307X
1741-3540