Limits on neutrino Lorentz violation from multimessenger observations of TXS 0506+056

Cosmological backgroung torsion limits from Lorentz violation

Cosmological limits on Lorentz invariance breaking in Chern-Simons (3 + 1) − dimensional electrodynamics are used to place limits on torsion. Birefrigence phenomena is discussed by using extending the propagation equation to Riemann-Cartan spacetimes instead of treating it in purely Riemannian spaces. The parameter of Lorentz violation is shown to be proportional to the axial torsion vector whi...

Atmospheric Neutrino Constraints on Lorentz Violation

Sensitive tests of Lorentz invariance can emerge from the study of neutrino oscillations, particularly for atmospheric neutrinos where the effect is conveniently near-maximal and has been observed over a wide range of energies. We assume these oscillations to be described in terms of two neutrinos with different masses and (possibly) different maximal attainable velocities (MAVs). It suffices t...

Neutrino Oscillations and Lorentz Violation

Most data acquired to date by experiments in particle physics are successfully described by the minimal Standard Model (SM). One exception is the observation of neutrino oscillations, which are now well established and provide a compelling indication that the minimal SM requires modification. The inclusion of small masses in the neutrino sector of the SM suffices to describe the bulk of the exp...

Limits on Isotropic Lorentz Violation in QED from Collider Physics

Limits on Lorentz violation from synchrotron and inverse Compton sources.

We derive new bounds on Lorentz violations in the electron sector from existing data on high-energy astrophysical sources. Synchrotron and inverse Compton data give precisely complementary constraints. The best bound on a specific combination of electron Lorentz-violating coefficients is at the 6 x 10(-20) level, and independent bounds are available for all the Lorentz-violating c coefficients ...