LBNL Physics Division Research Progress Meetings

Speaker: Kehang Bai (University of Oregon) - Title: Exploring the Dark Sector with Low-Mass, Long-Lived Dark Photons and the ATLAS Silicon Tracker
2025-12-09 16:00 - 17:00 UTC
Research Progress Meeting
Date: December 9, 2025
Time: 4:00- 5:00 pm
Location: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]
Speaker: Kehang Bai (University of Oregon)
Title: Exploring the Dark Sector with Low-Mass, Long-Lived Dark Photons and the ATLAS Silicon Tracker
Abstract: The rich phenomenology of dark sector models offers exciting opportunities for discovering new physics at the Large Hadron Collider. In this talk, I will present the first ATLAS search for low-mass, long-lived dark photons with displaced vertices in the silicon tracker. This novel signature expands sensitivity to regions of parameter space beyond conventional resonance searches. I will highlight the experimental challenges of searching for long-lived particles in the low-mass regime and emphasize the importance of detailed detector understanding. Finally, I will discuss key aspects of the ATLAS Inner Tracker upgrade for the upcoming high-luminosity era of the Large Hadron Collider.
Join Zoom Meeting
https://lbnl.zoom.us/j/95679892182?pwd=[REDACTED]
Meeting ID: 956 7989 2182
Passcode: [REDACTED]
