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| Description | Speaker: Xiaochuan Lu Title: Constraining BSM custodial violations beyond the oblique framework Zoom: https://zoom.us/j/186024391 Host: Markus Luty Abstract: BSM custodial violations are believed to be strongly constrained by electroweak precision measurements. In particular, they result in a nonzero Peskin-Takeuchi T parameter, which is experimentally bounded at the per-mille level. However, the T parameter constraint only applies to oblique BSM physics. When the BSM effects are not oblique, T parameter is no longer an observable, and it fails to serve as an indicator of BSM custodial violations. We take a first step at addressing this problem by working with SMEFT at the dim-6 and tree level. We identify new observables that can serve as unambiguous indicators of BSM custodial violations. |
| Date | Mon, March 15, 2021 |
| Time | 1:30pm-2:30pm PDT |
| Duration | 1 hour |
| Access | Public |
| Created by | High-Energy Seminars |
| Updated | Fri, March 12, 2021 1:36pm PST |
| Send Reminder | Yes - 0 days 8 hour 0 minutes before start |
