Nuclear muon capture by He-3: Meson exchange currents for the triton channel

被引：44

作者：

Congleton, JG ^{[1
]}

Truhlik, E ^{[1
]}

机构：

[1] ACAD SCI CZECH REPUBL, INST PHYS NUCL, CR-25068 PRAGUE, CZECH REPUBLIC

来源：

PHYSICAL REVIEW C | 1996年 / 53卷 / 02期

关键词：

D O I：

10.1103/PhysRevC.53.956

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We have calculated exchange corrections for nuclear muon capture by He-3 leading to the H-3 final state using the hard-pion model and realistic nuclear wave functions. These currents modify the vector and axial part of the weak nuclear current. In their absence the rate is 12% smaller than found by experiment. Our final result for the rate is 1502 +/ 32 per second. For the analyzing powers we find A(v) = 0.515 +/- 0.005, A(t)= -0.375 +/- 0.004, and A(Delta) = -0.110 +/- 0.006. These predictions use the PCAC value of g(p). The variation of the observables with g(p) is also reported.

引用

页码：956 / 976

页数：21

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