[Seminars] FW: [theory-seminar] REMINDER PARTICLE THEORY SEMINAR TOMORROW

[Ramona Echols]

REMINDER PARTICLE THEORY SEMINAR TOMORROW



Theory Group is inviting you to a scheduled Zoom meeting.

DATE: Wednesday, January 13th, 2020

TIME:  1:30 P.M. Central Time (US and Canada)

LOCATION: VIA ZOOM

SPEAKER: Grant Remmen, KITP

Title: "Signs, Spin, SMEFT: Using Amplitudes to Constrain New Physics"



Abstract: Hints of new physics are encoded as higher-dimension operators in effective field theory. The couplings of these operators, "dial settings" in the low-energy laws of physics, can be bounded using methods independent of the ultraviolet completion, relying only on principles like unitarity of quantum mechanics, analytic properties of

scattering amplitudes, and causality. In this talk, I will show how such infrared consistency techniques can be used to constrain operators in the Standard Model EFT, constructing bounds for quartic bosonic and fermionic operators at mass dimension 8. Furthermore, using the Jacob-Wick partial wave expansion to construct novel dispersion relations, I will derive bounds for four-fermi operators at mass dimension 6, overcoming a theoretical barrier to constraining these phenomenologically important operators. These constraints give compelling near-term experimental implications for CP and flavor violation as well as collider physics, and provide us with powerful means to test the tenets of quantum field theory itself.



Upcoming Zoom Talks:

Kadanoff Seminar: Mukund Tangamani, UC Davis, Seminar Date, January 25th, Time: 1:30PM, Title: "Real-time gravitational replicas"

Kadanoff Seminar: Aaron Hui, Cornell, Seminar Date, February 1st, Title: "Beyond Ohm’s law—Bernoulli effect and streaming in electron hydrodynamics"

Kadanoff Seminar: Yunfend Jiang, CERN,  Seminar Date, February 8th, Title: "TBA"

Kadanoff Seminar: Sid Parameswaran, Oxford, Seminar Date, March 1st, Title: "TBA"

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