Double-β-decayQvalues ofSe74and

Production, characterization and operation of $$^{76}$$ 76 Ge enriched BEGe detectors in GERDA

“…The peak should arise at the Q ββ value which in the case of 76 Ge is at (2039.061 ± 0.007) keV [5]. The expected number of signal events λ S is given by:…”

Evaluation of the resonance enhancement effect in neutrinoless double-electron capture in152Gd,164Er, and180Fang1, Blaum2, Eliseev3 et al. 2012Phys. Rev. C210270View full textAdd to dashboardCite

“…The accuracy of Q-values at around 100 eV was achieved [12,[15][16][17][18][19][20][21][22][23], which has already allowed to exclude a number of isotopes from the list of the most promising candidates for searching the neutrinoless double-electron capture. The best candidate is currently 152 Gd, which although does not reach the unitary limit, however, undergoes a significant increase in the capture rate due to the proximity to the resonance level [20].…”

TheNd150(He3,Guess1, Adachi2, Akimune3 et al. 2011Phys. Rev. C

“…The experimental nuclear physics community has made a concerted effort to provide constraints on the theoretical calculations for both 2ν-and 0ν-ββ decay using several complementary techniques, including highprecision Q ββ measurements [24][25][26][27], the determination of valence proton and neutron orbits using single-nucleon transfer [28,29], and direct population of states in the intermediate nucleus via charge-exchange experiments [30][31][32][33][34][35][36][37]. Charge-exchange reactions can directly populate states in the intermediate nucleus, and this makes them a valuable tool to help constrain calculations of nuclear matrix elements.…”