Constraint on parity-violating muonic forces

Abstract

Using the nonobservance of missing mass events in the leptonic kaon decay $K\to \mu X$, 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.

3 pages, 3 figures. Version to appear in PRL

References in corpus (3)

• New Parity-Violating Muonic Forces
• Proton size anomaly
• Experimental Study of the Radiative Decays K+ -> mu+ nu e+e- and K+ -> e+ nu e+e-

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