Muon capture on 3He and the weak structure of the nucleon

Doron Gazit*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


The weak form factors of the nucleon, including the induced pseudoscalar form factor and second class terms, are constrained using a microscopic calculation of the weak capture process 3He (μ-, νμ) 3H. The calculation is parameter free, and yields a rate of 1499 (16) Hz, in agreement with the remarkable experimental measurement 1496 (4) Hz. The nuclear wave functions are obtained using the EIHH method with the Argonne v18 nucleon-nucleon potential and the Urbana-IX three nucleon force. The weak currents in the nuclei are described using HBχPT formalism. The induced pseudoscalar form factor is found to agree with HBχPT prediction. The result is compatible with vanishing second class currents, with the tightest constraint to date on the conservation of vector current (CVC) hypothesis.

Original languageAmerican English
Pages (from-to)472-476
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number5
StatePublished - 11 Sep 2008
Externally publishedYes

Bibliographical note

Funding Information:
The author acknowledges discussions with N. Barnea, N.T. Zinner, and W.C. Haxton. This work is supported by DOE grant number DE-FG02-00ER41132.


Dive into the research topics of 'Muon capture on 3He and the weak structure of the nucleon'. Together they form a unique fingerprint.

Cite this