标量粒子在中性介子混合中的效应  

Scalar Particle Effects on Neutral Meson Mixing

作　　者：竹杰 魏正涛 Zhu Jie;Wei Zhengtao(School of Physics,Nankai University,Tianjin 300071,China)

机构地区：[1]南开大学物理科学学院,天津300071

出　　处：《南开大学学报（自然科学版）》2020年第6期10-12,共3页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(11175091)。

摘　　要：中性粒子混合提供了寻找超出粒子物理标准模型的新物理的理想场所.讨论一种包含很重的标量粒子的新物理模型.标量粒子与标准模型的夸克相互作用,可导致味道改变的中性流过程,从而产生中性粒子之间的震荡.讨论了标量粒子在中性介子混合中的效应,根据实验数据对于新模型中的参数,如标量粒子的质量和耦合常数给出了限制.Neutral meson mixing provides an ideal place to explore new physics beyond the standard model. A new physics model was studied which contains a heavy scalar particle. The scalar particle can interact with the SM quarks. It induces flavor changing neutral current process and neutral meson oscillations.The effects of a heavy scalar particle on the neutral meson mixing are discussed. By using the experimental data, the constraints on model parameters, such as scalar mass and the coupling constants are given.

关 键 词：标量粒子 中性粒子混合 新物理 

分 类 号：O572.2[理学—粒子物理与原子核物理]