Double β Decay and the Axial Strength
Suhonen, J., & Kostensalo, J. (2019). Double β Decay and the Axial Strength. Frontiers in Physics, 7, Article 29. https://doi.org/10.3389/fphy.2019.00029
Published inFrontiers in Physics
© 2019 Suhonen and Kostensalo.
Quenching of the weak axial strength gA is discussed and relations of this quenching to the nuclear matrix elements of double beta decays are highlighted. An analysis of Gamow-Teller transitions in the mass range A = 62 − 142 is presented and its results are compared with those of many previous works. The enhancement of the axial charge is discussed for first-forbidden pseudoscalar β transitions. Higher-forbidden β transitions are introduced and their role in determining the effective value of gA is examined, in particular from the point of view of the β-decay half-lives and the shapes of electron spectra of forbidden non-unique β transitions.
PublisherFrontiers Research Foundation
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Mesonic enhancement of the weak axial charge and its effect on the half-lives and spectral shapes of first-forbidden J+↔J− decays Kostensalo, Joel; Suhonen, Jouni (Elsevier B.V., 2018)The effects of the enhancement of the axial-charge matrix element γ5 were studied in medium heavy and heavy nuclei for first-forbidden J+ ↔ J− decay transitions using the nuclear shell model. Noticeable dependence on the ...
Second-forbidden nonunique β− decays of 59,60Fe:possible candidates for gA sensitive electron spectral-shape measurements Kumar, Anil; Srivastava, Praveen, C.; Suhonen, Jouni (Springer Science and Business Media LLC, 2021)In this work, we present a theoretical study of the electron spectral shapes for the second-forbidden nonunique β−-decay transitions 59Fe(3/2−)→59Co(7/2−) and 60Fe(0+)→60Co(2+) in the framework of the nuclear shell model. ...
Suhonen, Jouni (Frontiers Research Foundation, 2017)In this review the quenching of the weak axial-vector coupling strength, gA, is discussed in nuclear β and double-β decays. On one hand, the nuclear-medium and nuclear many-body effects are separated, and on the other ...
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Berry, T. A.; Podolyák, Zs.; Carroll, R. J.; Lică, R.; Grawe, H.; Timofeyuk, N. K.; Alexander, T.; Andreyev, A. N.; Ansari, S.; Borge, M. J. G.; Creswell, J.; Fynbo, H. O. U.; Gelletly, W.; Gerst, R.-B.; Górska, M.; Gredley, A.; Greenlees, Paul; Harkness-Brennan, L. J.; Huyse, M.; Judge, S. M.; Judson, D. S.; Konki, Joonas; Kurcewicz, J.; Kuti, I.; Lalkovski, S.; Lazarus, I.; Lund, M.; Madurga, M.; Mărginean, N.; Mărginean, R.; Marroquin, I.; Mihai, C.; Mihai, R. E.; Nácher, E.; Nae, S.; Negret, A.; Niţă, C.; Pascu, S.; Page, R. D.; Patel, Z.; Perea, A.; Pucknell, V.; Rahkila, Panu; Rapisarda, E.; Regan, P. H.; Rotaru, F.; Shand, C. M.; Simpson, E. C.; Sotty, Ch.; Stegemann, S.; Stora, T.; Tengblad, O.; Turturica, A.; Van Duppen, P.; Vedia, V.; Wadsworth, R.; Walker, P. M.; Warr, N.; Wearing, F.; De Witte, H. (Elsevier BV, 2019)Gamow-Teller β decay is forbidden if the number of nodes in the radial wave functions of the initial and final states is different. This Δn = 0 requirement plays a major role in the β decay of heavy neutron-rich nuclei, ...