$\nu d\to {\mu }^{-}{\Delta }^{++}n$ Reaction and Axial Vector $N-\Delta$ Coupling

Abstract

The reaction $\nu d\to {\mu }^{-}{\Delta }^{++}n$ is studied in the region of low $q^2$ to investigate the effect of deuteron structure and width of the $\Delta$ resonance on the differential cross section. The results are used to extract the axial vector $N-\Delta$ coupling $C_5^A$ from the experimental data on this reaction. The possibility to determine this coupling from electroweak interaction experiments with high intensity electron accelerators is discussed.

Comments: 14 pages, REVTEX, 5 figures