第一百零一期HAPOF论坛，Spin Polarisation Experiments at Storage Rings: Axion Searches and Electric Dipole Moments，Prof. Dr. rer. nat. Jörg Pretz，2024年07月19日

Friday 19 Jul 2024, 17:00 → 19:00 Asia/Shanghai

Speaker: Prof. Dr. rer. nat. Jörg Pretz (RWTH Aachen University)

Time: 15:00 - 17:00, 19 July, 2024

Zoom meeting ID: 816 2118 1754, Password: 939565

Abstract: Electric Dipole Moments (EDMs) of elementary particles, including hadrons, are considered as one of the most powerful tool

to study CP-violation beyond the Standard Model. Such CP-violating mechanisms are searched for to explain the dominance of matter

over anti-matter in our universe. Hypothetical dark matter particles, like axions or axion-like-particles, induce an oscillating EDM. EDMs

of charged particles can be measured in storage rings. Due to an EDM, the spin vector will experience a torque resulting in a change of

the original spin direction which can be determined with the help of a polarimeter. Although the principle of the measurement is simple,

the smallness of the  expected effect makes this a challenging experiment requiring new developments in various experimental areas.

The talk will focus on first results obtained at the Cooler Synchrotron COSY at Forschungszentrum Jülich and will also discuss future

plans.

 

About the speaker: Prof. Dr. rer. nat. Jörg Pretz obtained his PhD from University of Mainz in 1997, and made his habilitation at University

of Bonn in 2007. He worked as an associate research scientist at Yale University from 1998 to 2000, as a research scientist at Unviersity

of Bonn from 2000 to 2011. From 2012, he has been a professor of physics at RWTH Aachen University, and a research scientist at Forschungszentrum Jülich from 2017. He is one of the spokespersons of the JEDI Collaboration founded in 2011.

 

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