EFT amplitudes via on-shell methods |
TYPE | High Energy Physics Seminar |
Speaker: | Yaniv Weiss |
Affiliation: | Technion |
Organizer: | Yotam Soreq |
Date: | 18.10.2021 |
Time: | 11:30 - 13:00 |
Location: | Lidow Nathan Rosen (300) |
Abstract: | Abstract
We use on shell methods to compute EFT scattering amplitudes, both massless and massive, with no reference to a Lagrangian. On shell methods avoid the usual complications that accompany an amplitude computation a la Feynman. Lorentz symmetry, global symmetry, Bose statistics and unitarity (almost) completely fix the allowed kinematical structures. We will demonstrate this approach by calculating several amplitudes completely "bottom-up", i.e., with unitarity and only the known symmetries and particles to guide us. Applying on-shell methods to an electroweak-like sector of the Standard Model, we demonstrate how relations between masses and couplings, which are the result of the Higgs mechanism, now emerge by imposing unitarity.
There will be also online access:
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https://technion.zoom.us/j/93917521043
Meeting ID: 939 1752 1043
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