EPJ Web Conf.
Volume 142, 2017International Symposium Advances in Dark Matter and Particle Physics
|Number of page(s)||5|
|Published online||12 April 2017|
The End Point Tagger physics program at A2@MAMI
Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, Johann-Joachim-Becher-Weg 45, 55099, Mainz
a e-mail: firstname.lastname@example.org
Published online: 12 April 2017
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′ → ηπ0π0, giving insight to the ππ 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 γp → 3π0, and branching ratio analyses of η′ → ωγ and ω → ηγ.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.