Prospects on Determining Electric Dipole Moments of Σand Ξ Hyperons at BESIII
ZHANG Feng1, GAO Yuan-Ning2,3, HUO Lei1
1Department of Physics, Harbin Institute of Technology, Harbin 150001 2Key Laboratory of Particle and Radiation Imaging (Ministry of Education), Tsinghua University, Beijing 100084 3Department of Engineering Physics, Tsinghua University, Beijing 100084
Prospects on Determining Electric Dipole Moments of Σand Ξ Hyperons at BESIII
ZHANG Feng1, GAO Yuan-Ning2,3, HUO Lei1
1Department of Physics, Harbin Institute of Technology, Harbin 150001 2Key Laboratory of Particle and Radiation Imaging (Ministry of Education), Tsinghua University, Beijing 100084 3Department of Engineering Physics, Tsinghua University, Beijing 100084
摘要The electric dipole moment ofΣ(or Ξ) hyperon, dΣ(or dΞ), can be detected by analyzing the angular distribution in the decay process of J/φ→. The dependence of dΣ(or dΞ) on the free parameters describing the angular distribution is studied in detail with a Monte Carlo simulation based on 109 J/ψ events expected in one year data taking at BESIⅢ. The result shows that an expected upper limit with 10-16~10-18 e cm on dΣ(or dΞ) can be achieved depending on the true values of free parameters.
Abstract：The electric dipole moment ofΣ(or Ξ) hyperon, dΣ(or dΞ), can be detected by analyzing the angular distribution in the decay process of J/φ→. The dependence of dΣ(or dΞ) on the free parameters describing the angular distribution is studied in detail with a Monte Carlo simulation based on 109 J/ψ events expected in one year data taking at BESIⅢ. The result shows that an expected upper limit with 10-16~10-18 e cm on dΣ(or dΞ) can be achieved depending on the true values of free parameters.
ZHANG Feng;GAO Yuan-Ning;HUO Lei. Prospects on Determining Electric Dipole Moments of Σand Ξ Hyperons at BESIII[J]. 中国物理快报, 2010, 27(5): 51101-051101.
ZHANG Feng, GAO Yuan-Ning, HUO Lei. Prospects on Determining Electric Dipole Moments of Σand Ξ Hyperons at BESIII. Chin. Phys. Lett., 2010, 27(5): 51101-051101.
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. The dependence of dΣ(or dΞ) on the free parameters describing the angular distribution is studied in detail with a Monte Carlo simulation based on 109 J/ψ events expected in one year data taking at BESIⅢ. The result shows that an expected upper limit with 10-16~10-18 e cm on dΣ (or dΞ) can be achieved depending on the true values of free parameters.
. The dependence of dΣ(or dΞ) on the free parameters describing the angular distribution is studied in detail with a Monte Carlo simulation based on 109 J/ψ events expected in one year data taking at BESIⅢ. The result shows that an expected upper limit with 10-16~10-18 e cm on dΣ (or dΞ) can be achieved depending on the true values of free parameters.