Limits on the Non-Standard Interactions of Neutrinos from $e^+ e^-$ Colliders

Details Limits on the Non-Standard Interactions of Neutrinos from $e^+ e^-$ Colliders Limits on the Non-Standard Interactions of Neutrinos from $e^+ e^-$ Colliders

2001-11-12

arxiv.org/abs/hep-ph/0111137v2

Phys.Lett. B535 (2002) 207-218

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 LaTeX pages, 6 postscript figures, uses epsfig. New discussion on bounds from reactor anti-neutrino scattering off electron

Scientific paper

10.1016/S0370-2693(02)01767-7

We provide an effective Lagrangian analysis of contact non-standard interactions of neutrinos with electrons, which can be effectively mediated by extra particles, and examine the associated experimental limits. At present, such interactions are strongly constrained only for $\nu_\mu$: the bounds are loose for $\nu_e$ and absent for $\nu_\tau$. We emphasize the unique role played by the reaction $e^+e^-\to \nu \bar{\nu}\gamma$ in providing direct constraints on such non-standard interactions.

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