Constraining velocity-dependent Lorentz/CPT-violations using Lunar Laser Ranging

Understand

The possibility for Lorentz/CPT-breaking, which is motivated by unification theories, can be systematically tested within the standard-model extension framework.

• In the pure gravity sector, the mass dimension 5 operators produce new Lorentz and CPT-breaking terms in the 2-body equations of motion that depend on the relative velocity of the bodies.
• In this Letter, we report new constraints on 15 independent SME coefficients for Lorentz/CPT-violations with mass dimension 5 using lunar laser ranging.
• We perform a global analysis of lunar ranging data within the SME framework using more than 26,000 normal points between 1969 and 2018.