Neutrino speed anomaly as signal of Lorentz violation

TL;DR

This paper reanalyzes neutrino speed anomalies considering new experimental data and finds that constraints on Lorentz violation are significantly tighter than previous reports, impacting theories of neutrino physics.

Contribution

It introduces a new framework within the standard model supplement to analyze Lorentz violation effects on neutrino speed, providing more stringent constraints.

Findings

Lorentz violating parameters are constrained at least ten times stronger than earlier OPERA results.

New data from ICARUS and CNGS collaborations tighten bounds on neutrino Lorentz violation.

Combining phenomenological considerations yields more restrictive limits on neutrino Lorentz violation.

Abstract

We make a reanalysis on the issue of neutrino speed anomaly by taking into account the newly reported data from the ICARUS experiment and other CNGS collaborations. We examine the consequence of the Lorentz violation on the neutrino speed in a new framework of standard model supplement (SMS), and find that the Lorentz violating parameters are constrained at least one order stronger than that of the earlier OPERA report. The combination with other phenomenological considerations puts more stringent constraints on the Lorentz violation of neutrinos.