We study the strong interaction at low and medium energies. Our activities focus on the theoretical interpretation of the experiments at MAMI and at other accelerator facilities. Beside analytical methods like effective field theories and dispersion theory numerical simulations of Quantum Chromodynamics on the lattice are applied.

Physics Colloquium
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We are happy to welcoming Professor David Cassidy on Tuesday, 17 October 2017 at 16:15h

Electrostatic manipulation of Rydberg positronium atoms

Experiments using positronium (Ps) atoms are often complicated by low numbers of atoms, and the fact that they self-annihilate in around 142 ns (for the “long-lived” states). The latter problem can be avoided if the atoms are optically excited to long-lived Rydberg states, which don’t annihilate to any significant degree. This has become much easier to accomplish in recent years using positron buffer gas trapping technology [1], allowing the efficient production of Rydberg Ps atoms [2]. As well as increasing their lifetime, exciting Ps atoms to Rydberg levels also makes it possible to manipulate them using electric fields because of their large dipole moments [3]...

29.10.2017 - 04.11.2017
12th European Research Conference on Electromagnetic Interactions with Nucleons and Nuclei
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This conference series covers experimental and theoretical topics in the areas of nuclear and hadronic physics. It also serves as a forum for contacts and discussions of current and future developments in our field. The conference has unofficially been a counterpart of the US Gordon conference on photonuclear physics and held in alternate years with traditionally a strong US participation. No proceedings will be produced, in the tradition of Gordon and Euroconferences, in order to encourage the frank exchange of even tentative information.

The pre-conference from 29-30 October is organized by young physicists and focuses on skill and career development as well as research. Further, a series of pedagogical lectures will take place on the day before the conference.  ... 

14.02.2018 - 23.03.2018
Master Academy
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Just finishing your B.Sc.? Thinking about graduate studies? How about taking a 5-week programme (without tuition fees) that provides intensive training in fundamental physics with lectures and mentoring by leading scientists, the opportunity to network with international researchers, and an individual lab course to work on your own project, as well as an optional language course and cultural programme? Travel and accommodation grants are available. Apply by 15th December 2017.  ... 

JGU to submit full proposal for its PRISMA+ Cluster of Excellence
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Johannes Gutenberg University Mainz (JGU) started successfully in the Excellence Strategy competition of the German federal and state governments. JGU will enter the final round with a full proposal for the PRISMA+ Cluster of Excellence. The international expert committee of 39 researchers and scientists named by the German Joint Science Conference (Gemeinsame Wissenschaftskonferenz, GWK) has called on Johannes Gutenberg University Mainz to submit a follow-up proposal for its "Precision Physics, Fundamental Interactions, and Structure of Matter" (PRISMA) Cluster of Excellence, which had been successful already in the previous Excellence Initiative competition.  ... 

19.09.2017 - 21.09.2017
GRK "Symmetry Breaking" Annual Retreat 2017
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The annual retreat offers the opportunity for all members to better get to know each other and to discuss physics in a relaxed, informal atmosphere. Students can present their research projects in short presentations followed by discussions. In addition, distinguished scientists from leading institutions will give lecture courses in the fields of Higgs physics, axions, and gravitational waves.  ... 

29.08.2017 - 01.09.2017
SFB School 2017
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The SFB 1044 "The Low-Energy Frontier of the Standard Model" held its annual Summer School at the Hotel Ebertor in Boppard from 29 August to 01 September 2017. Invited lecturer Adam Szczepaniak (Indiana U) spoke about Partial Wave Analysis and all that. Dr. Sören Lange from Gießen talked about experimental aspects. The program also included contributions from members of the SFB (graduate students, postdocs).   ... 

Dr. Oleksandr Tomalak receives award at DIES ACADEMICUS
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As a part of the annual DIES ACADEMICUS held on May 31, 2017 Dr. Oleksandr Tomalak was presented a Department of Physics, Mathematics and Information Technology Award for his outstanding dissertion titled Two-photon exchange corrections in elastic lepton-proton scattering.  ... 

04.04.2016 - 07.04.2016
Workshop "New Vistas in Low-Energy Precision Physics (LEPP)"
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The aim of this workshop is to discuss the physics opportunities at MESA, especially the opportunities given at the internal target experiment MAGIX. At MAGIX, the combination of a windowless target in combination with a high-intensity energy-recovering electron beam opens the avenue for new precision measurements in the fields of nuclear, hadron, and particle physics.  ...