Related Experiment Video
Updated: May 23, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Constraint on parity-violating muonic forces
Vernon Barger1, Cheng-Wei Chiang, Wai-Yee Keung
1Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA.
Abstract:
Using the nonobservance of missing mass events in the leptonic kaon decay K→μX, we place a strong constraint on exotic parity-violating gauge interactions of the right-handed muon. By way of illustration, we apply it to an explanation of the proton size anomaly that invokes such a new force; scenarios in which the gauge boson decays invisibly or is long lived are constrained.
Related Concept Videos
The Pauli Exclusion Principle
The Uncertainty Principle
Non-conservative Forces
Also unlike their conservative counterparts, they are path-dependent; where the object starts and stops does matter. For example, a grinding wheel applies a...
Coulomb's Law
Newton's third law applies to the Coulomb force — the force on...
Nuclear Stability
To hold positively charged protons together in the...
Equilibrium Conditions for a Particle
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...

