Felix Kahlhoefer - From picoseconds to teraseconds: The lifetime frontier of particle physics

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• Felix Kahlhoefer (RWTH Aachen U.)
• Friday 10 March 2023, 16:00-17:00
• Potter Room (B1.19).

If you have a question about this talk, please contact Maeve Madigan.

Zoom: https://us02web.zoom.us/j/85896693592?pwd=cDBJMVJJNlkwcG9FWFBJNTJmTTJyQT09 Meeting ID: 858 9669 3592 Passcode: 199505

Particles that are long-lived on the time scales relevant for particle physics and cosmology are a generic feature of the Standard Model and many of its extensions. In this talk I will motivate the search for long-lived particles and discuss a range of experimental and observational strategies to make progress on the “lifetime frontier”. While long-lived particles with lifetimes in the range from picoseconds to microseconds are best probed with collider and fixed-target experiments, longer lifetimes lie in the realm of astroparticle physics and cosmology. I will discuss how dark matter direct detection experiments can search for long-lived particles with lifetimes in the range from seconds to hours and explore the sensitivity of Big Bang Nucleosynthesis and the Cosmic Microwave Background to particles that decay on the scale of hours to millions of years. While most of this talk will be quite model-independent, I will present results for a few benchmark scenarios, including strongly interacting dark sectors, axion-like particles and inelastic dark matter.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

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