Seesaw at LHC through Left - Right Symmetry

Abstract

I argue that LHC may shed light on the nature of neutrino mass through the probe of the seesaw mechanism. The smoking gun signature is lepton number violation through the production of same sign lepton pairs, a collider analogy of the neutrinoless double beta decay. I discuss this in the context of L-R symmetric theories, which led originally to neutrino mass and the seesaw mechanism. A W_R gauge boson with a mass in a few TeV region could easily dominate neutrinoless double beta decay, and its discovery at LHC would have spectacular signatures of parity restoration and lepton number violation. Moreover, LHC can measure the masses of the right-handed neutrinos and the right-handed leptonic mixing matrix, which could in turn be used to predict the rates for neutrinoless double decay and lepton flavor violating violating processes. The LR scale at the LHC energies offers great hope of observing these low energy processes in the present and upcoming experiments.

14 pages. Based on the plenary talk at the Conference in Honour of Murray Gell-Mann's 80th Birthday, NTU, Singapore, February 2010. Added discussion on mirror fermions, additional references. The version to appear in the International Journal of Modern Physics A

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Cited by in corpus (20)

• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• Warm Dark Matter in Low Scale Left-Right Theory
• Left-Right Symmetry: from Majorana to Dirac
• Right Handed Quark Mixing in Left-Right Symmetric Theory
• Probing Heavy-Light Neutrino Mixing in Left-Right Seesaw Models at the LHC
• Lepton Number Violation in Higgs Decay at LHC
• Neutrinoless double-$\beta$ decay in TeV scale Left-Right symmetric models
• Strong P invariance, neutron EDM and minimal Left-Right parity at LHC
• Stringent Dilepton Bounds on Left-Right Models using LHC data
• Restoration of Parity and the Right-Handed Analog of the CKM Matrix
• Constraining Flavor Changing Interactions from LHC Run-2 Dilepton Bounds with Vector Mediators
• Perturbativity and mass scales of Left-Right Higgs bosons
• The Scalar Triplet Contribution to Lepton Flavour Violation and Neutrinoless Double Beta Decay in Left-Right Symmetric Model
• GUT Physics in the era of the LHC
• Implementation of the left-right symmetric model in FeynRules
• Left-Right Symmetric Models at the High-Intensity Frontier
• Left-Right Symmetric Theory with Light Sterile Neutrinos
• A CP-violating phase in a two Higgs triplet scenario : some phenomenological implications
• Time-reversal symmetry violation in several Lepton-Flavor-Violating processes
• Search for like-sign dileptons plus two jets signal in the framework of the manifest left-right symmetric model