Tensor and scalar interactions of neutrinos may lead to observable neutrino magnetic moments

Abstract

Recently more generalized four-fermion interactions of neutrinos such as tensor and scalar interactions (TSIs) have been extensively studied in response to forthcoming precision measurements of neutrino interactions. In this letter, we show that due to the chirality-flipping nature, at the 1-loop level TSIs typically generate much larger ($10^7\sim 10^{10}$) neutrino magnetic moments ($\nu$MMs) than the vector case. For some cases, the large $\nu$MMs generated by TSIs may reach or exceed the known bounds, which implies potentially important interplay between probing TSIs and searching for $\nu$MMs in current and future neutrino experiments.

Comments on effective magnetic moment add; matches the journal version

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Cited by in corpus (11)

• The Neutrino Magnetic Moment Portal: Cosmology, Astrophysics, and Direct Detection
• Dirac neutrinos and $N_{\mathrm{eff}}$
• Scalar and tensor neutrino interactions
• Neutrino Magnetic Moments Meet Precision $N_{\mathrm{eff}}$ Measurements
• The Neutrino Magnetic Moment Portal and Supernovae: New Constraints and Multimessenger Opportunities
• Dark matter electromagnetic dipoles: the WIMP expectation
• Magnetic Moments of Astrophysical Neutrinos
• Strong cosmological constraints on the neutrino magnetic moment
• Nonperturbative effects in neutrino magnetic moments
• Magnetar-powered Neutrinos and Magnetic Moment Signatures at IceCube
• Tensor interaction in coherent elastic neutrino-nucleus scattering