Abstract
The minimal extension of the standard model of electroweak interactions allows for massive neutrinos, a massive right-handed boson WR, and a left-right mixing angle ζ. While an estimate of the light (electron) neutrino can be extracted from the non-observation of the neutrinoless double beta decay, the limits on the mixing angle and the mass of the righthanded (RH) boson may be extracted from a combined analysis of the double beta decay measurements (GERDA, EXO-200 and KamLAND-Zen collaborations) and ATLAS data on the two-jets two-leptons signals following the excitation of a virtual RH boson mediated by a heavy-mass neutrino. In this work we shall compare results of both types of experiments, and show that the estimates are not in tension.
Highlights
The theory of the electroweak interactions, in the form of the standard model (SM), assumes massless neutrinos and left-handed couplings [1]
With the elements introduced in the previous section we are in conditions to calculate the mass of the right-handed boson and the limits on the mixing angle ζ by the combined analysis of ATLAS [8] and CMS[9] results and those of GERDA[12], EXO-200[14] and KamLAND-Zen[13]
In order to determine exclusion regions in the parametric space we have taken, for our analysis, the data acquired in the measurement of two jets+two leptons final states in pp collisions performed at the LHC facility[7] by ATLAS [8] and CMS [9]
Summary
The theory of the electroweak interactions, in the form of the standard model (SM), assumes massless neutrinos and left-handed couplings [1]. The result has significance for the construction of LR models, since it determines the range of allowed values for the mixing between left and righthanded currents [10], since the mass of the left-handed boson is already known.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
