Double charge exchange (${}^{11}$B,${}^{11}$Li) reaction for double beta decay response

Abstract

The (${}^{11}$B,${}^{11}$Li) double charge-exchange reaction (DCER) at $E{(}^{11}$B)/$A$=80 MeV was measured for the first time to demonstrate the feasibility of the reaction for studying neutrino nuclear responses for double beta decays (DBD). The ${}^{13}$C(${}^{11}$B,${}^{11}$Li)${}^{13}$O reaction shows strengths at the ground state and low and high excitation giant resonance regions. The ${}^{56}$Fe (${}^{11}$B,${}^{11}$Li) ${}^{56}$Ni reaction shows the large strengths in the possible double giant resonance region and beyond, but shows no strengths in the low excitation region below 5 MeV, suggesting strong concentration of the DBD strength at the high excitation region. The DCER is used to evaluate the spin isospin strengths relevant to DBD responses.

6 pages, 3 figures

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