Right-Handed Neutrinos at CERN LHC and the Mechanism of Neutrino Mass Generation
By J. Kersten, A. Smirnov. 2007
414 citations recorded by the source corpus.
We consider the possibility to detect right-handed neutrinos, which are mostly singlets of the standard model gauge group, at future accelerators. Substantial mixing of these neutrinos with the active neutrinos requires a cancellation of different contributions to the light neutrino mass matrix at the level of 10{sup -8}. We discuss possible symmetries behind this cancellation and argue that for three right-handed neutrinos they always lead to conservation of total lepton number. Light neutrino masses can be generated by small perturbations violating these symmetries. In the most general case, LHC physics and the mechanism of neutrino mass generation are essentially decoupled; with additional assumptions, correlations can appear between collider observables and features of the neutrino mass matrix.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/4d3d5f6d88545db69d8ece807c80c03e16c099ed
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In Nuclear and High Energy Physics
- Gudrun Heinrich
- Cms Collaboration
- Atlas Collaboration
- Ansgar Denner
- Stefan Dittmaier
- Stefan Kallweit
- Fabio Maltoni
- M. Grazzini
Citations in the corpus
- Vector boson fusion at multi-TeV muon colliders (2020, methodology): “For our purposes, we neglect subtleties related to decoupling of lepton number-violating processes in simplified models with only heavy neutrinos [162, 165, 166], and consider the well-studied [167–169] Phenomenological Type I Seesaw benchmark model, as implemented in the HeavyN UFO libraries of ref”
- Beyond the Standard Model Physics at the HL-LHC and HE-LHC (2018, background): “s [366, 367], it was proved that requiring all three light neutrinos to be massless is equivalent to the conservation of lepton number at all orders in perturbation theory.”
- Neutrinoless double beta decay versus other probes of heavy sterile neutrinos (2019, background): “The stability of these textures can in principle be guaranteed by enforcing extra symmetries in the lepton sector [12, 13, 19, 22–24].”
- TeV scale see-saw mechanisms of neutrino mass generation, the Majorana nature of the heavy singlet neutrinos and (ββ)0ν-decay (2010, methodology): “[ 57 , 58]), we get for the heavy Majorana neutrinos”
- Lepton Number Violation: Seesaw Models and Their Collider Tests (2017, background): “Moreover, this fine-tuning scenario is a caveat of the aforementioned decoupling of L-violation in a minimal Type I Seesaw from LHC phenomenology [27, 96, 97].”
- The Phenomenology of Right Handed Neutrinos (2013, background): “If the νR only interact via these Yukawa couplings F , the branching ratio is usually too small [175]; a detection is only possible if F has a particular structure that leads to cancellations in the contributions of different elements to mν [118, 119], hence allows for larger individual entries of F”