6533b827fe1ef96bd1286e0e
RESEARCH PRODUCT
Analyzing the CP Nature of a New Scalar Particle via S→Zh Decays
Martin BauerMatthias NeubertMatthias NeubertAndrea Thammsubject
PhysicsParticle physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyScalar (mathematics)General Physics and AstronomyOrder (ring theory)FermionScalar boson01 natural sciencesStandard ModelHidden sectorGauge group0103 physical sciencesFundamental physics010306 general physicsdescription
Scalar particles $S$ that are singlets under the standard model gauge group are generic features of many models of fundamental physics, in particular, as possible mediators to a hidden sector. We show that the decay $S\ensuremath{\rightarrow}Zh$ provides a powerful probe of the $CP$ nature of the scalar, because it is allowed only if $S$ has $CP$-odd interactions. We perform a model-independent analysis of this decay using an effective Lagrangian and compute the relevant Wilson coefficients arising from integrating out heavy fermions to one-loop order.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-10-28 | Physical Review Letters |