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Published September 4, 2014 | Published + Submitted
Journal Article Open

Effective Theory and Simple Completions for Neutrino Interactions

Abstract

We consider all the dimension 6 operators as well as some simple extensions of the standard model that give new contributions to neutrino interactions with matter. Such interactions are usually parametrized by ϵ_(αβ), where α and β are neutrino flavor indices taking the values e, μ and τ. In the simple models we consider the ϵ_(αβ)'s are much more constrained than in the operator-based model-independent approach. Typically the ϵ_(αβ)'s are restricted to be smaller in magnitude than around 10^(−3). In some of the leptoquark models, a specific pattern for the leptoquark Yukawa couplings allows the diagonal element ϵ_(ττ) to be as large as ∼0.1, or one of ϵ_(ee), ϵ_(μμ)∼0.01. We discuss the interplay between neutrino physics and leptoquark searches at the LHC.

Additional Information

© 2014 American Physical Society. Received 2 May 2014; published 4 September 2014. We thank Michael Ramsey-Musolf, Ryan Patterson, Maurizio Pierini and Lisa Randall for useful discussions and correspondence. This work is supported by the Gordon and Betty Moore Foundation through Grant #776 to the Caltech Moore Center for Theoretical Cosmology and Physics, and by the DOE Grant DE-FG02-92ER40701.

Attached Files

Published - PhysRevD.90.053005.pdf

Submitted - 1404.4663v1.pdf

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August 20, 2023
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