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RESEARCH PRODUCT
Short-range mechanisms of neutrinoless double beta decay at the LHC
Martin HirschHeinrich PäsJuan Carlos HeloS. G. Kovalenkosubject
PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron Collider010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísica01 natural sciences7. Clean energyHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Double beta decay0103 physical sciencesHigh Energy Physics::ExperimentLepton number010306 general physicsHumanitiesMajorana neutrinosdescription
Lepton number violation (LNV) mediated by short- range operators can manifest itself in both neutrinoless double beta decay (0 nu beta beta) and in processes with same- sign dilepton final states at the LHC. We derive limits from existing LHC data at root s = 8 TeV and compare the discovery potential of the forthcoming root s = 14 TeV phase of the LHC with the sensitivity of current and future 0 nu beta beta decay experiments, assuming the short-range part of the 0 nu beta beta decay amplitude dominates. We focus on the first of two possible topologies triggered by one fermion and two bosons in the intermediate state. In all cases, except for the pure leptoquark mechanism, the LHC will be more sensitive than 0 nu beta beta decay in the future. In addition, we propose to search for a charge asymmetry in the final state leptons and to use different invariant mass peaks as a possible tool to discriminate the various possible mechanisms for LNV signals at the LHC.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-10-25 | Physical Review D |