粒子弱荷的研究(英文)  

Studies on the Weak Charges of Particles

作　　者：史志强[1] 

机构地区：[1]陕西师范大学物理与信息技术学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2002年第1期31-42,共12页Journal of Shaanxi Normal University：Natural Science Edition

摘　　要：为了研究有质量的中微子 ,在理论上引入了粒子 (基本费米子、中间玻色子和强子 )弱荷的新概念 .首次报道了弱荷守恒定律 ,并提出了检验弱荷是否存在的实验方案 .根据弱荷的手征性 ,合理地解释了宇称不守恒的原因 .根据弱荷的对称性扩展了标准模型 ,指出所有的中微子都是有质量的Dirac粒子 ,但是右手中微子和左手反中微子的弱荷为零 ,它们不参与弱相互作用 。In order to include massive neutrino theoretically, a new concept of the weak charge of particles, fundamental fermions, intermediate bosons and hadrons, is introduced. A new conservation law of the weak charge is first reported. Possible experiments are suggested which might test whether the weak charge is present. According to the chirality of the weak charge the origin of parity nonconservation in the weak interactions is reasonably explained. According to the symmetry of the weak charge, an extension of the standard model is proposed. In this scenario, all the three generations of neutrinos are massive Dirac particles, but the weak charges of the right_handed neutrinos and the left_handed antineutrinos are both zero, and so they do not take part in the weak interactions and are called the dark particles.

关 键 词：非标准模型中微子 中性流 宇称不守恒 弱荷守恒定律 基本费米子 中间玻色子 强子 DIRAC粒子 

分 类 号：O572.321[理学—粒子物理与原子核物理]