Interactive neutrino physics · Mass models

What must we add to the Standard Model to give neutrinos mass?

A map of the theoretical choices, from the minimal Standard Model to SO(10), with the fields, the mass matrix and the observable consequences of each.

Interactive course map

What must we add to the Standard Model to give neutrinos mass?

About this figure

Course map

Level. Graduate: the Standard Model and basic quantum field theory.

Each step adds a field, imposes or drops a symmetry, or allows a new term. Lecture mode walks through six scenes; Explore mode lets you click any node, with a review question and its answer.

Assumptions

  • One generation, flavour indices suppressed.
  • Conventions of the course notes: v ≈ 246 GeV, mD = y v/√2, mν ≃ −mD MR⁻¹ mDT; overall signs and O(1) factors differ elsewhere in the literature.
  • “Allowed” means compatible with the symmetries of the model, not necessarily present or non-zero.

References

Where it fits

Cite and reuse

A. Marrone, Course map, interactive figure (2026), https://home.ba.infn.it/~marrone/interactive-course-map.html.

@misc{Marrone:coursemap,
  author       = {Marrone, Antonio},
  title        = {Course map},
  howpublished = {Interactive figure, \url{https://home.ba.infn.it/~marrone/interactive-course-map.html}},
  year         = {2026}
}

Text and figures: CC BY 4.0. Code (assets/js/theory-map.js): MIT licence. Use it in lectures and talks, adapt it, redistribute it — with attribution.