@Article{Fonseca+Hirsch2018,
author="Fonseca, R. M.
and Hirsch, M.",
title="Delta L >= 4 lepton number violating processes",
journal="Physical Review D",
year="2018",
publisher="Amer Physical Soc",
volume="98",
number="1",
pages="015035--12pp",
abstract="We discuss the experimental prospects for observing processes which violate lepton number (Delta L) in four units ( or more). First, we reconsider neutrinoless quadruple beta decay, deriving a model independent and very conservative lower limit on its half- life of the order of 10(41) ys for Nd-150. This renders quadruple beta decay unobservable for any feasible experiment. We then turn to a more general discussion of different possible low-energy processes with values Delta L >= 4. A simple operator analysis leads to rather pessimistic conclusions about the observability at low-energy experiments in all cases we study. However, the situation looks much brighter for accelerator experiments. For two example models with Delta L = 4 and another one with Delta L = 5, we show how the LHC or a hypothetical future pp collider, such as the FCC, could probe multilepton number violating operators at the TeV scale.",
optnote="WOS:000439791500005",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3675), last updated on Thu, 09 Aug 2018 00:17:13 +0000",
issn="2470-0010",
doi="10.1103/PhysRevD.98.015035",
opturl="http://arxiv.org/abs/1804.10545",
opturl="https://doi.org/10.1103/PhysRevD.98.015035",
archivePrefix="arXiv",
eprint="1804.10545",
language="English"
}