6533b823fe1ef96bd127ecac

RESEARCH PRODUCT

Meson decay studies from MAMI A2

Lena Heijkenskjöld

subject

PhysicsQuarkParticle physicsPhotonMeson010308 nuclear & particles physicsScatteringPhysicsQC1-999Physics beyond the Standard ModelHigh Energy Physics::PhenomenologyNuclear TheoryMass ratio01 natural sciencesHadron physics0103 physical sciencesHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsMicrotron

description

Decays of the light mesons π0, η, ω, and η’ provide a unique laboratory to test fundamental aspects of hadron physics. Precision studies of such diverse topics as the light quark mass ratio, π−π scattering lengths, and searches for physics beyond the Standard Model are possible. Additionally, Dalitz decays of light mesons provide a way of measuring the electromagnetic meson transition formfactors in the time-like region. The A2 tagged photon facility at the Mainz Microtron provides a high yield of light mesons produced by photo-induced reactions on protons, which makes the experiment ideal for high precision measurements of meson decays. Presented here are the contributions made by the A2 collaboration to such studies.

https://doi.org/10.1051/epjconf/201921203004