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| Description | Speaker: Cara Giovanetti (Berkeley) Title: A hint for new physics from primordial deuterium Room: 3024 Host: Hsin-Chia Cheng Abstract: The abundance of primordial deuterium formed after Big Bang Nucleosynthesis has been measured to percent-level precision. Predictions for the primordial deuterium abundance have achieved similar precision, but different teams have reported different central values, sometimes resulting in a mild (~2sigma) disagreement with measurement. I will introduce a new method to predict the primordial deuterium abundance using Gaussian Processes, which is robust against analysis choices like model selection, dataset selection, and theory prior. I will illustrate why different groups have found different results, and briefly discuss the new physics implications of these findings. |
| Date | Mon, February 2, 2026 |
| Time | 1:30pm-3:00pm PST |
| Duration | 1 hour 30 minutes |
| Access | Public |
| Created by | High-Energy Seminars |
| Updated | Tue, January 27, 2026 2:33pm PST |
