Ultra-high-energy neutrino scattering in an anomalous U(1) effective field theory
Journal
PHYSICS LETTERS B
Journal Volume
827
Date Issued
2021-10-15
Author(s)
Abstract
A unique characteristic of exponentially growing scattering amplitude arises
in an anomalous Abelian effective field theory when an extremely light Dirac
neutrino mass is introduced to break the symmetry. We show that the low energy
effective Lagrangian can be made explicitly gauge invariant with the help of a
nonlinear representation of the Goldstone or Stueckelberg field. We study the
peculiar feature of exponential growth in the ultra-high-energy
neutrino-nucleon inelastic scattering. It is found that the inelastic
scattering cross section is highly sensitive to the ratio of gauge coupling to
the gauge boson mass, $g_X/m_X$. When the IceCube measurement of
ultra-high-energy neutrinos, which is consistent with the standard model
prediction up to $E_\nu \sim 6$ PeV, is taken into account, the inferred
constraint on $g_X/m_X$ is more severe than that obtained from the events of
mono-lepton$+$missing transverse energy at the LHC. A muon collider with a
collision energy of $10$ TeV can be a good environment other than hadron
colliders to probe the novel effect.
Subjects
GAUGE-INVARIANCE; High Energy Physics - Phenomenology; High Energy Physics - Phenomenology; astro-ph.HE; High Energy Physics - Experiment
SDGs
Publisher
ELSEVIER
Description
18 pages, 6 figures, version published in Physics Letters B
Type
journal article