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DOE OSTI · 1855116

Theoretical developments in the SMEFT at dimension-8 and beyond

Mereghetti, Emanuele·Petriello, Frank·Alioli, Simone·Boughezal, Radja·Duriex, Gauthier·Graf, Lukas·Henning, Brian Quinn·Melia, Tom
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Abstract

In this contribution to the Snowmass 2021 process we review theoretical developments in the Standard Model Effective Field Theory (SMEFT) with a focus on effects at the dimension-8 level and beyond. We review the theoretical advances that led to the complete construction of the operator bases for the dimension-8 and dimension- 9 SMEFT Lagrangians. We discuss the possibility of obtaining all-orders results in the 1/Λ expansion for certain SMEFT observables, and briefly present the on-shell approach to constructing SMEFT amplitudes. Finally we present several new phenomenological effects that first arise at dimension-8 and discuss the impact of these terms on experimental analyses.

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS73 NUCLEAR PHYSICS AND RADIATION PHYSICS74 ATOMIC AND MOLECULAR PHYSICSAtomic, Nuclear and Particle Physics

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Mereghetti, Emanuele, Petriello, Frank, Alioli, Simone, Boughezal, Radja, Duriex, Gauthier, Graf, Lukas, Henning, Brian Quinn, Melia, Tom. 2022-03-14. Theoretical developments in the SMEFT at dimension-8 and beyond. https://doi.org/10.2172/1855116

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