Talk detail

Participant	Stadnik, Yevgeny
Institution	Johannes Gutenberg University of Mainz - Staudingerweg 18 - Mainz - Rhineland-Palatinate - Germany

Session	BS2	Accepted		Order	Time
Talk	Oral abstract	Title	New Probes for Ultra-Low-Mass Scalar Field Dark Matter
Coauthors
Abstract	Ultra-low-mass scalar dark matter particles produced after the Big Bang may form an oscillating classical field, which can be sought for in a variety of low-energy laboratory experiments based on spectroscopic, interferometric and magnetometric techniques, as well as in astrophysical phenomena. These scalar particles can also mediate anomalous fifth forces between ordinary-matter particles. Recent measurements in atoms and astrophysical phenomena have already allowed us to improve on existing constraints on a broad range of non-gravitational interactions between scalar and ordinary-matter particles by many orders of magnitude (up to 15 orders of magnitude in the case of ultra-low-mass dark matter).
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Session	PT4	Accepted		Order	Time
Talk	Oral abstract	Title	Atomic Probes of Axionlike Particles and Dark Matter
Coauthors
Abstract	Ultra-low-mass axionlike dark matter particles produced after the Big Bang may form an oscillating classical field, which can be sought for with atomic magnetometry, ultracold neutron and torsion pendulum experiments. Recently, the nEDM collaboration performed the first experimental search for time-varying spin-dependent effects induced by axionlike dark matter, improving limits on the axion-gluon interaction by up to a factor of 1000 and improving on previous laboratory limits on the axion-nucleon interaction by up to a factor of 40. Axionlike particles and other bosons can also mediate anomalous fifth forces between ordinary-matter particles. Using data from atomic and molecular experiments, we have placed limits on various interactions mediated by bosonic particles, improving on previous laboratory bounds from other experiments by many orders of magnitude for a broad range of boson masses.
Pdf file