Neutrinoless Double Beta Decay: 2015 Review

Table 4

Tight constraints on obtained in 2015, by analyzing the data on the CMB by Planck Collaboration [34], polarization included, along with other relevant cosmological data probing smaller scales.

Upper bound on ( CL)	Included dataset
153 meV [34]	SNe, BAO, prior
120 meV [43]	Lyman-
126 meV [44]	BAO, priors, Planck SZ clusters
177 meV [45]	BAO
110 meV [46]	BAO, galaxy clustering, lensing

Results as reported in http://wiki.cosmos.esa.int/planckpla2015, page 311.