Skip to Main content Skip to Navigation
Journal articles

Measurement of the parameter xi" in polarized muon decay and Implications on exotic couplings of the leptonic weak interaction

Abstract : The muon decay parameter ξ'' has been determined in a measurement of the longitudinal polarization of positrons emitted from polarized and depolarized muons. The result, ξ''=0.981±0.045stat±0.003syst, is consistent with the Standard Model prediction of unity, and provides an order of magnitude improvement in the relative precision of this parameter. This value sets new constraints on exotic couplings beyond the dominant V−A description of the leptonic weak interaction.
Document type :
Journal articles
Complete list of metadatas

http://hal.in2p3.fr/in2p3-01090724
Contributor : Sandrine Guesnon <>
Submitted on : Thursday, December 4, 2014 - 9:43:23 AM
Last modification on : Wednesday, October 23, 2019 - 2:42:03 PM

Links full text

Identifiers

Citation

R. Prieels, O. Naviliat-Cuncic, P. Knowles, P. van Hove, X. Morelle, et al.. Measurement of the parameter xi" in polarized muon decay and Implications on exotic couplings of the leptonic weak interaction. Physical Review D, American Physical Society, 2014, 90, pp.112003. ⟨10.1103/PhysRevD.90.112003⟩. ⟨in2p3-01090724⟩

Share

Metrics

Record views

127