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arXiv · 1205.5887

(B-L) Symmetry vs. Neutrino Seesaw

Adam Latosinski·Krzysztof A. Meissner·Hermann Nicolai
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Abstract

We compute the effective coupling of the Majoron to W bosons at $\cO(\hbar)$ by evaluating the matrix element of the (B-L) current between the vacuum and a $W^+W^-$ state. The (B-L) anomaly vanishes, but the amplitude does not vanish as a result of a UV finite and non-local contribution which is entirely due to the mixing between left-chiral and right-chiral neutrinos. The result shows how anomaly-like couplings may arise in spite of the fact that the (B-L) current remains exactly conserved to all orders in $\hbar$, lending additional support to our previous proposal to identify the Majoron with the axion.

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Adam Latosinski, Krzysztof A. Meissner, Hermann Nicolai. 2012-10-12. (B-L) Symmetry vs. Neutrino Seesaw. https://doi.org/10.1140/epjc%2Fs10052-013-2336-7

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