20.500.12556/RUL-189477 Weak triplet models of neutrino magnetic moments Experimental limits on neutrino magnetic moments remain several orders of magnitude above the predictions of the Standard Model; therefore, any future detection would provide unambiguous evidence for new physics. In models with Dirac neutrinos, however, mechanisms that enhance the magnetic moment typically generate excessively large neutrino masses. Recently, it has been argued that in frameworks where neutrinos mix with weak-triplet Dirac fermions, the magnetic moment can be decoupled from the neutrino mass. In this work, we revisit this possibility and show that sizable enhancements remain highly nontrivial to realize naturally. We demonstrate that, although the minimal realization allows the magnetic moment to be decoupled from the neutrino mass, obtaining an observable enhancement requires a delicate adjustment of the model parameters. Moreover, in extended scenarios, the decoupling no longer persists: the magnetic moment and neutrino mass become intrinsically linked, such that attempts to enhance the former inevitably induce large contributions to the latter. physics of elementary particles fizika osnovnih delcev true false true Angleški jezik Slovenski jezik Članek v reviji 2026-10-07 16:09:32 2026-10-07 16:09:33 2026-10-10 03:36:50 0000-00-00 00:00:00 2026 0 0 11 str. art. no. 1150 Vol. 86 Oct. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 539.120 1434-6052 10.1140/epjc/s10052-026-16456-8 294111747 https://link.springer.com/article/10.1140/epjc/s10052-026-16456-8 1 9742ac7c-c258-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=250063 s10052-026-16456-8.pdf s10052-026-16456-8.pdf 1 814675EB21328DE153274090692A1AC1 3dcaf566b02ce183df0781091ab5633f06720a30a77c39d58bc2918e6c20d8e0 d1c39d0a-c258-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=250064 Fakulteta za matematiko in fiziko 0 0 0