Abstract
We present a three-dimensional (3D) description of muon induced deuteron disintegration. This reaction is treated as the decay of the muonic atom with the muon initially on the lowest K shell. Our aim is to calculate the total and differential de- cay rates. We work in momentum space and use 3D momentum eigenstates directly. This approach allowed us to calculate the appropriate nuclear matrix elements, necessary building blocks for the differential decay rate, in a single step. For contrast - in classi- cal calculations many partial-waves have to be taken into account. We achieved a very good agreement between the 3D and partial-wave methods for calculations that involve single-nucleon currents. Our result for the total decay rate is also in agreement with ex- perimental values, though these are not very precise. This success motivates us to also include two-nucleon current contributions that include the meson exchange currents. Ad- ditionally, our formalism can also be applied to other, so far poorly described, processes like: μ + 3 He → ν + n + d or μ + 3 He → ν + n + n + p.
Highlights
1 Introduction Muon induced deuteron disintegration is presented in a 3D formalism, that instead of partial wave decomposition of operators involved in the calculations, uses the 3D momentum eigenstates of the nucleon directly
This formalism was successfully applied to transition operator calculations in [1] and to the description of electron induced deuteron disintegration in [2]
We will demonstrate the final results compared with the classical partial wave approach
Summary
1 Introduction Muon induced deuteron disintegration is presented in a 3D formalism, that instead of partial wave decomposition of operators involved in the calculations, uses the 3D momentum eigenstates of the nucleon directly. This formalism was successfully applied to transition operator calculations in [1] and to the description of electron induced deuteron disintegration in [2]. In the final state the atom disintegrates into two neutrons and a muonic neutrino.
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