6533b85cfe1ef96bd12bc01a

RESEARCH PRODUCT

Rare CP-violated η and η′ meson decays and neutron EDM.

Alexey S. ZhevlakovMikhail GorchteinValery E. LyubovitskijValery E. LyubovitskijValery E. LyubovitskijAstrid N. Hiller Blin

subject

PhysicsParticle physicsMeson010308 nuclear & particles physicsPhysicsQC1-999Physics beyond the Standard Model01 natural sciencesElectric dipole momentPionOrders of magnitude (time)0103 physical sciencesCP violationHigh Energy Physics::ExperimentNeutron010306 general physics

description

The data for the upper limit on the electric dipole moment of the neutron (nEDM) can be explained by using different mechanisms beyond the Standard Model (SM). The nEDM can be generated by a CP-violating transition of η and η′ mesons into pion pairs. We derive the upper limits for the rates of the CP-violating decays η(η′) → 2π are by orders of magnitude more stringent than those from existing experiments so far.

https://doi.org/10.1051/epjconf/201819102003