K⁺→π⁰μ⁺ν衰变中违反T宇称的横向μ子极化的新限制。
New limit on the T-violating transverse muon polarization in K+-->pi0mu+nu decays.
作者信息
Abe M, Aliev M, Anisimovsky V, Aoki M, Asano Y, Baker T, Blecher M, Depommier P, Hasinoff M, Horie K, Igarashi Y, Imazato J, Ivashkin A P, Khabibullin M M, Khotjantsev A N, Kudenko Yu G, Kuno Y, Lee K S, Levchenko A, Lim G Y, Macdonald J A, Mineev O V, Okorokova N, Rangacharyulu C, Shimizu S, Shin Y-H, Shin Y-M, Sim K S, Yershov N, Yokoi T
机构信息
Institute of Applied Physics, University of Tsukuba, Ibaraki 305-0006, Japan.
出版信息
Phys Rev Lett. 2004 Sep 24;93(13):131601. doi: 10.1103/PhysRevLett.93.131601. Epub 2004 Sep 21.
A search for T-violating transverse muon polarization (P(T)) in the K+-->pi(0)mu(+)nu decay was performed using kaon decays at rest. A new improved value P(T)=-0.0017+/-0.0023(stat)+/-0.0011(syst) was obtained giving an upper limit |P(T)|<0.0050. The T-violation parameter was determined to be Imxi=-0.0053+/-0.0071(stat)+/-0.0036(syst) giving an upper limit |Imxi|<0.016.
利用静止K介子衰变，在K⁺→π⁰μ⁺ν衰变中寻找违反时间反演（T）的横向μ子极化（P(T)）。得到了一个新的改进值P(T)= -0.0017±0.0023（统计）±0.0011（系统），给出上限|P(T)|<0.0050。确定T违反参数为Imξ = -0.0053±0.0071（统计）±0.0036（系统），给出上限|Imξ|<0.016。
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