Neutrinoless Double β⁺/EC Decays

Table 2

Comparison of the ground-state NMEs for the QRPA, IBM-2 [31], and PHFB [32] models using the Jastrow short-range correlations. The results for 136Ce are taken from [30] with 𝑔_𝐴=1.261.

Nucleus	QRPA (𝑔𝐴=1.25)			IBM-2 (𝑔𝐴=1.269)			PHFB (𝑔𝐴=1.254)
	𝑀^(0𝜈)GT	𝑀^(0𝜈)F	𝑀^′(0𝜈)	𝑀^(0𝜈)GT	𝑀^(0𝜈)F	𝑀^′(0𝜈)	𝑀^′(0𝜈)
78Kr	3.271	−0.331	3.482	3.384	−2.146	4.478	—
96Ru	2.589	−0.988	3.222	2.204	−0.269	2.483	4.82±0.11
106Cd	4.920	−1.586	5.935	2.757	−0.255	3.106	7.97±0.72
124Xe	3.491	−1.889	4.700	3.967	−2.224	5.156	3.69±0.32
130Ba	5.412	−2.528	7.031	3.911	−2.108	5.043	2.75±0.82
136Ce	4.282	−1.961	5.537	3.815	−2.007	4.901	—