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Fixing Two-Nucleon Weak-Axial Coupling L_{1,A} From mu-d Capture

Jiunn-Wei Chen·Takashi Inoue·Xiangdong Ji·Yingchuan Li
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Abstract

We calculate the muon capture rate on the deuteron to next-to-next-to-leading order in the pionless effective field theory. The result can be used to constrain the two-nucleon isovector axial coupling L_{1,A} to +/- 2 fm^3 if the muon capture rate is measured to 2% level. From this, one can determine the neutrino-deuteron break up reactions and the pp-fusion cross section in the sun to a same level of accuracy.

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Jiunn-Wei Chen, Takashi Inoue, Xiangdong Ji, Yingchuan Li. 2006-01-11. Fixing Two-Nucleon Weak-Axial Coupling L_{1,A} From mu-d Capture. https://doi.org/10.1103/physrevc.72.061001

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