Neutrino beams as a probe of the nuclear isospin and spin–isospin excitations

Abstract

We explore the possibility of performing nuclear structure studies using low energy neutrino beams. In particular, low energy beta-beams and conventional sources (muon decay-at-rest) are considered. We present results on the total charged-current as well as flux-averaged cross sections associated to electron (anti)-neutrino scattering on oxygen, iron, molybdenum and lead, as typical examples. It is shown that by using neutrinos from low energy beta-beams, information on forbidden states, in particular the spin-dipole, could be extracted.

Neutrino Interactions with Nuclei and Dark Matter

“…Cross-section results for 208 Pb are taken from Ref. [76]. The reliability of our calculations is justified from the comparison of the CC neutrino-nucleus cross sections with other calculations.…”

“…In Figure 1, we compare our calculated cross sections for the reactions ν e =ν e À 56 Fe and ν e =ν e À 40 Ar with those of Refs. [76] and [77], respectively.…”

Beta-Beams

“…Figure 3 shows the corresponding fluxes. The broad physics potential of such a facility, currently being analyzed, covers : • neutrino-nucleus interaction and nuclear structure studies [11,13,14,20];…”

“…A comparison of the physics potential of low energy beta-beams and conventional sources is made in [14]. In [20] it is shown that interesting information on the spin-dipole as well as higher multipoles might be obtained by the vaying the γ of the ions. Instead of varying the ions one might take different parts of the fluxes at a detector [22].…”

“…They are usually classified following the value of the Lorentz γ boost factor, as low energy (γ = 6 − 15) [11][12][13][14][15][16][17][18][19][20][21][21][22][23][24], original (γ ≈ 60 − 100) [10,[25][26][27][28][29][30], medium (γ of several hundreds) and high-energy (γ of the order of thousands) [31][32][33][34][35]. (For a review of all scenarios see [36].)…”