TY  - JOUR
AU  - Fonseca, R. M.
AU  - Hirsch, M.
PY  - 2015
DA  - 2015//
TI  - SU(5)-inspired double beta decay
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 015014
EP  - 14pp
VL  - 92
IS  - 1
PB  - Amer Physical Soc
AB  - The short-range part of the neutrinoless double beta amplitude is generated via the exchange of exotic particles, such as charged scalars, leptoquarks and/or diquarks. In order to give a sizable contribution to the total decay rate, the masses of these exotics should be of the order of (at most) a few TeV. Here, we argue that these exotics could be the "light" (i.e., weak-scale) remnants of some B – L violating variants of SU(5). We show that unification of the standard model gauge couplings, consistent with proton decay limits, can be achieved in such a setup without the need to introduce supersymmetry. Since these nonminimal SU(5)-inspired models violate B – L, they generate Majorana neutrino masses and therefore make it possible to explain neutrino oscillation data. The light colored particles of these models can potentially be observed at the LHC, and it might be possible to probe the origin of the neutrino masses with Delta L = 2 violating signals. As particular realizations of this idea, we present two models, one for each of the two possible tree-level topologies of neutrinoless double beta decay.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1505.06121
UR  - https://doi.org/10.1103/PhysRevD.92.015014
DO  - 10.1103/PhysRevD.92.015014
LA  - English
N1  - WOS:000357860200006
ID  - Fonseca+Hirsch2015
ER  -