BARYON DECAY PARAMETERS

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2016,（10）
• 页码范围: 805-808
• 页数: 4页
• 语种: 中文

摘要

Baryon semileptonic decays The typical spin-l/2 baryon semileptonic decay is described by a matrix element,the hadronic part of which may be written as: -Bf [fl(q2)γλ + i f2(q2)σλμqμ + g1(q2)γλγ5 + g3(q2)γsqλ] Bi. (1) Here Bi and Bf are spinors describing the initial and final baryons,and q =pi-pf,while the terms in fl,f2,gl,and 93 account for vector,induced tensor ("weak magnetism"),axial vector,and induced pseudoscalar contributions [1].