{"id":19822,"date":"2025-06-29T23:02:50","date_gmt":"2025-06-29T21:02:50","guid":{"rendered":"https:\/\/cms.zdv.uni-mainz.de\/fb08-prisma\/?page_id=19822"},"modified":"2026-04-09T16:04:43","modified_gmt":"2026-04-09T14:04:43","slug":"structure","status":"publish","type":"page","link":"https:\/\/prisma.uni-mainz.de\/en\/structure\/","title":{"rendered":"About us"},"content":{"rendered":"\n \n<\/jgu-base-anchornavigation>\n<\/jgu-base-pageheader>\n
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The Standard Model of Particle Physics<\/strong> describes nature at its most fundamental level, the basic building blocks of matter. Despite its success, it fails to explain some phenomena such as the existence of dark matter or the excess of matter over antimatter. Furthermore, some unexplained puzzles, such as the discrepancy between experimental measurements and the theoretical prediction of the anomalous magnetic moment of muons, challenge the validity of the Standard Model and may provide the first clues for “new physics” beyond the Standard Model. <\/p>\n\n\n\n

The Cluster of Excellence<\/strong> PRISMA++<\/sup><\/strong> makes unique contributions to the investigation of these open questions related to the validity of the Standard Model. <\/p>\n\n\n\n

PRISMA++<\/sup> scientists are searching for new particles and forces using a combination of innovative precision experiments conducted on the JGU campus and large-scale experiments at international locations.<\/p>\n\n\n\n

One of the main objectives of this cluster is the construction and operation of the “Mainz Energy-Recovering Superconducting Accelerator” (MESA)<\/strong>. MESA enables a new generation of low-energy precision experiments, such as the search for messenger particles for the dark sector, measurements of the electromagnetic form factors of protons at low momentum transfers, precision determinations of the electroweak mixing angle, and measurements of the neutron skin of heavy nuclei. <\/p>\n\n\n\n \n\n \n<\/jgu-base-numberbox>\n\n\n\n \n<\/jgu-base-numberbox>\n\n\n\n \n<\/jgu-base-numberbox>\n\n\n\n \n<\/jgu-base-numberbox>\n\n\n\n \n<\/jgu-base-numberbox>\n\n\n<\/jgu-base-slider>\n\n\n\n

(as of 12\/2025)<\/p>\n<\/div><\/div>\n<\/jgu-base-section>\n

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PRISMA++<\/sup> consists of work groups from the Institutes for Physics and Nuclear Physics, the Department of Chemistry (here: Nuclear Chemistry) at JGU, and the Helmholtz Institute Mainz. Over 300 scientists at all career levels work in these. <\/p>\n\n\n\n

The organizational chart shows the structural organization of our cluster of excellence.<\/p>\n<\/div>\n\n\n\n

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Prof. Dr. Concettina Sfienti<\/strong><\/strong><\/p>\n\n\n