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Paper detail

Theoretical developments in the SMEFT at dimension-8 and beyond

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 as well as the current status of renormalization group running and implications for positivity, 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.

preprint2022arXivOpen access
Simone AlioliRadja BoughezalWeiguang CaoMikael ChalaÁlvaro Díaz-CarmonaSupratim Das BakshiGauthier DurieuxLukáš GráfGuilherme GuedesBrian Quinn HenningTeppei KitaharaHao-Lin LiXiaochuan LuCamila S. MachadoAdam MartinTom MeliaEmanuele MereghettiHitoshi MurayamaChristopher W. MurphyJasper Roosmale NepveuSridip PalFrank PetrielloYael ShadmiJing ShuYaniv WeissMing-Lei XiaoJiang-Hao Yu
hep-ph
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Simone AlioliRadja BoughezalWeiguang CaoMikael ChalaÁlvaro Díaz-CarmonaSupratim Das BakshiGauthier DurieuxLukáš GráfGuilherme GuedesBrian Quinn HenningTeppei KitaharaHao-Lin LiXiaochuan LuCamila S. MachadoAdam MartinTom MeliaEmanuele MereghettiHitoshi MurayamaChristopher W. MurphyJasper Roosmale NepveuSridip PalFrank PetrielloYael ShadmiJing ShuYaniv WeissMing-Lei XiaoJiang-Hao Yu

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Theoretical developments in the SMEFT at dimension-8 and beyond | BZPEER | BZPEER