Observables sensitive to absolute neutrino masses. II

Abstract

In this followup to Phys. Rev. D 75, 053001 (2007) [arXiv:hep-ph/0608060] we report updated constraints on neutrino mass-mixing parameters, in light of recent neutrino oscillation data (KamLAND, SNO, and MINOS) and cosmological observations (WMAP 5-year and other data). We discuss their interplay with the final 0nu2beta decay results in 76-Ge claimed by part of the Heidelberg-Moscow Collaboration, using recent evaluations of the corresponding nuclear matrix elements, and their uncertainties. We also comment on the 0nu2beta limits in 130-Te recently set by Cuoricino, and on prospective limits or signals from the KATRIN experiment.

Figures (5)

• Figure 1: Global $3\nu$ oscillation analysis (2008): Bounds on the mass-mixing oscillation parameters, in terms of standard deviations from the best fit. Note the $1.6\sigma$ preference for $\theta_{13}>0$.
• Figure 2: Bands allowed at $2\sigma$ by neutrino oscillation data, in each of the three coordinate planes of the parameter space ($m_\beta,\,m_{\beta\beta},\,\Sigma$), for both normal and inverted hierarchy.
• Figure 3: Cosmological constraints on the sum of neutrino masses ($\Sigma$). Standard deviation curves for the five datasets in Table \ref{['tableCASES']}: 1 (dotted), 2 (dashed), 3 (dot-dashed), 4 (long dashed), and 5 (solid).
• Figure 4: Global combination of oscillation plus CMB data (case 1 in Table \ref{['tableCASES']}) with the $0\nu2\beta$ decay claim, in the plane $(\Sigma,\,m_{\beta\beta})$.
• Figure 5: Bounds from oscillation plus all cosmological data (case 5 in Table \ref{['tableCASES']}), contrasted with the $0\nu2\beta$ decay claim, in the plane $(\Sigma,\,m_{\beta\beta})$.