6533b7d1fe1ef96bd125d74f
RESEARCH PRODUCT
The End Point Tagger physics program at A2@MAMI
Oliver Steffensubject
PhysicsParticle physicsPhotonMeson010308 nuclear & particles physicsBranching fractionPhysicsQC1-999Form factor (quantum field theory)Dalitz plotParticle acceleratorScattering length01 natural scienceslaw.inventionNuclear physicslaw0103 physical sciences010306 general physicsBeam (structure)description
The A2-Collaboration uses a beam of real photons from the tagged photon facility at the electron accelerator MAMI in Mainz, Germany, to study photo-produced mesons. A new tagging device allows access to the higher photon beam energy range of 1.4 to 1.6 GeV. A large dataset containing more than 6 million η ′ and roughly 29 million ω decays has been obtained. Analyses are ongoing, including a study of the cusp effect and Dalitz plot in η ′ → ηπ 0 π 0 , giving insight to the π π scattering length and the structure of the ηππ system, as well as the measurement of the electromagnetic transition form factor in η ′ → e + e − γ , a cross section measurement of γ p → 3 π 0 , and branching ratio analyses of η ′ → ωγ and ω → ηγ .
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-01 | EPJ Web of Conferences |