AXIONS AND OTHER SIMILAR PARTICLES  

作　　者：A. Ringwald L.J Rosenberg G. Rybka 

机构地区：[1]DESY [2]U. of Washington

出　　处：《Chinese Physics C》2016年第10期620-632,共13页中国物理C（英文版）

摘　　要：Introduction In this section, we list coupling-strength and mass limits for light neutral scalar or pseudoscalar bosons that couple weakly to normal matter and radiation. Such bosons may arise from a global spontaneously broken U（1） symmetry, resulting in a massless Nambu-Goldstone （NG） boson. If there is a small explicit symmetry breaking, either already in the Lagrangian or due to quantum effects such as anomalies, the boson acquires a mass and is called a pseudo-NG boson. Typical examples are axions （A^0） [1,2], familons [3] and Majorons [4], associated, respectively, with a spontaneously broken Peccei-Quinn, family and lepton-number symmetry.Introduction In this section, we list coupling-strength and mass limits for light neutral scalar or pseudoscalar bosons that couple weakly to normal matter and radiation. Such bosons may arise from a global spontaneously broken U（1） symmetry, resulting in a massless Nambu-Goldstone （NG） boson. If there is a small explicit symmetry breaking, either already in the Lagrangian or due to quantum effects such as anomalies, the boson acquires a mass and is called a pseudo-NG boson. Typical examples are axions （A^0） [1,2], familons [3] and Majorons [4], associated, respectively, with a spontaneously broken Peccei-Quinn, family and lepton-number symmetry.

分 类 号：O4[理学—物理]