Combining data from high-energy p p -reactions and neutrinoless double-beta decay: Limits on the mass of the right-handed boson

K. ZUBER; O. CIVITARESE; J. SUHONEN

INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS

WORLD SCIENTIFIC PUBL CO PTE LTD

Lugar: London, UK; Año: 2016 vol. 25

0218-3013

From the recently established lower-limits on the nonobservability of the neutrino-less double-beta decay of 76 Ge (GERDA collaboration) and 136 Xe (EXO-200 andKamLAND-Zen collaborations), combined with the ATLAS and CMS data, we extractlimits for the left?right (LR) mixing angle, ζ, of the SU(2) L ×SU(2) R electroweak Hamil-tonian. For the theoretical analysis, which is a model dependent, we have adopted a min-imal extension of the Standard Model (SM) of Electroweak Interactions belonging to theSU(2) L × SU(2) R representation. The nuclear-structure input of the analysis consists ofa set of matrix elements and phase-space factors, and the experimental lower-limits forthe half-lives. The other input are the ATLAS and CMS cross-section measurements ofthe pp-collisions into two-jets and two-leptons, performed at the large hadron collider(LHC). Our analysis yields the limit ζ < 10 −3 for M R > 3 TeV, by combining themodel-dependent limits extracted from the double-beta-decay measurements and thoseextracted from the results of the CMS and ATLAS measurements.