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We compute the complete one-loop renormalization group equations (RGEs) for all the four-fermion operators at dimension-8 Standard Model Effective Field Theory (SMEFT). We adopt the on-shell framework, where the RGEs are obtained from the…

高能物理 - 唯象学 · 物理学 2025-12-29 Chao Wu , Ming-Lei Xiao , Jiang-Hao Yu , Yu-Hui Zheng

We explore the interplay of New Physics (NP) effects in $(g-2)_\ell$ and $h \to \ell^+ \ell^-$ within the Standard Model Effective Field Theory (SMEFT) framework, including one-loop Renormalization Group (RG) evolution of the Wilson…

高能物理 - 唯象学 · 物理学 2021-06-30 Svjetlana Fajfer , Jernej F. Kamenik , Michele Tammaro

Charged lepton flavour-violating (cLFV) processes, which are definite proof of new physics beyond the Standard Model, have remained elusive experimentally till now. Effective Field Theory (EFT) has been very useful in providing information…

高能物理 - 唯象学 · 物理学 2026-01-06 Utpal Chattopadhyay , Debottam Das , Rahul Puri , Joydeep Roy

We present a global analysis of lepton-flavor-specific operators in the Standard Model Effective Field Theory (SMEFT), combining data from collider and flavor physics experiments. We systematically explore various lepton-flavor scenarios,…

高能物理 - 唯象学 · 物理学 2025-11-11 Cornelius Grunwald , Gudrun Hiller , Kevin Kröninger , Lara Nollen

We compute the renormalization group equations (RGEs) of the Standard Model effective field theory (EFT) extended with a real scalar singlet, up to dimension-five and one-loop accuracy. We compare our renormalization results with those…

高能物理 - 唯象学 · 物理学 2024-04-30 Supratim Das Bakshi , Jonathan Machado-Rodríguez , Maria Ramos

Meson-antimeson mixing provides the most stringent constraints on baryon- and lepton-number conserving New Physics, probing scales higher than $10^5$ TeV. In the context of the effective theory of weak interactions, these constraints…

高能物理 - 唯象学 · 物理学 2019-11-04 Luca Silvestrini , Mauro Valli

We investigate the impact of electroweak corrections and effective field theory operators on $W^+W^-$ production at the Large Hadron Collider (LHC). Utilizing the Standard Model effective-field theory (SMEFT) framework, we extend the…

高能物理 - 唯象学 · 物理学 2025-02-03 Shankha Banerjee , Daniel Reichelt , Michael Spannowsky

We study the power of a Tera-$Z$ run at FCC-ee for indirectly detecting or constraining heavy new physics. Our main finding is that nearly every new particle which matches at tree level to dimension-six operators of the Standard Model…

高能物理 - 唯象学 · 物理学 2025-03-11 Lukas Allwicher , Matthew McCullough , Sophie Renner

We calculate the gauge terms of the one-loop anomalous dimension matrix for the dimension-six operators of the Standard Model effective field theory (SM EFT). Combining these results with our previous results for the $\lambda$ and Yukawa…

高能物理 - 唯象学 · 物理学 2024-06-14 Rodrigo Alonso , Elizabeth E. Jenkins , Aneesh V. Manohar , Michael Trott

We explore CP-violating (CPV) effects of heavy New Physics in flavour-changing quark dipole transitions, within the framework of Standard Model Effective Field Theory (SMEFT). First, we establish the relevant dimension six operators and…

高能物理 - 唯象学 · 物理学 2023-06-30 Svjetlana Fajfer , Jernej F. Kamenik , Nejc Košnik , Aleks Smolkovič , Michele Tammaro

We organise the four-fermion vector current interactions below the weak scale -- i.e., in the low energy effective field theory (LEFT) -- into irreps of definite parity and $SU(N)$ flavour symmetry. Their coefficients are thus arranged into…

高能物理 - 唯象学 · 物理学 2026-01-13 Sophie Renner , Benjamin Smith , Dave Sutherland

We study nuclear electric dipole moments induced by $\Delta F=1$ effective operators in the Standard Model Effective Field Theory. Such contributions arise through renormalization group evolutions and matching conditions at the electroweak…

高能物理 - 唯象学 · 物理学 2020-05-20 Motoi Endo , Daiki Ueda

We report codes for the Standard Model Effective Field Theory (SMEFT) in FeynRules -- the SMEFTsim package. The codes enable theoretical predictions for dimension six operator corrections to the Standard Model using numerical tools, where…

高能物理 - 唯象学 · 物理学 2019-08-12 Ilaria Brivio , Yun Jiang , Michael Trott

We investigate the information that can be gained by including flavour data in fits of the Standard Model Effective Field Theory (SMEFT) with the assumption of Minimal Flavour Violation (MFV), allowing - as initial conditions at the high…

高能物理 - 唯象学 · 物理学 2021-01-05 Rafael Aoude , Tobias Hurth , Sophie Renner , William Shepherd

We study the effects of renormalisation group running of the Wilson coefficients in Standard Model Effective Field Theory, using the process $pp \to t \bar{t}h$ as a showcase. We consider both strong and top Yukawa running effects, since…

高能物理 - 唯象学 · 物理学 2024-04-30 Stefano Di Noi , Ramona Gröber

We consider a generic class of effective quantum field theories with arbitrary gauge groups and scalar matter fields. In such theories, we derive the one-loop Renormalization Group Equations (RGEs) for the physical dimension-six operators.…

高能物理 - 唯象学 · 物理学 2025-03-25 Mikołaj Misiak , Ignacy Nałęcz

We present a comprehensive analysis of electroweak, flavor, and collider bounds on the complete set of dimension-six SMEFT operators in the $U(2)^5$-symmetric limit. This operator basis provides a consistent framework to describe a wide…

高能物理 - 唯象学 · 物理学 2023-12-05 Lukas Allwicher , Claudia Cornella , Gino Isidori , Ben A. Stefanek

A model-independent anatomy of $\Delta F= 2$ transitions in the context of the Weak Effective Theory (WET) below the electroweak scale (EW) and the Standard Model Effective Field Theory (SMEFT) above the EW scale is discussed. Two master…

高能物理 - 唯象学 · 物理学 2022-02-22 Jason Aebischer

We study lepton flavour violating two- and three-body decays of pseudoscalar mesons in Effective Field Theory (EFT). We give analytic formulae for the decay rates in the presence of a complete basis of QED and QCD-invariant operators. The…

高能物理 - 唯象学 · 物理学 2019-01-30 Sacha Davidson , Albert Saporta

We reconsider the complete set of four-quark operators in the Weak Effective Theory (WET) for non-leptonic $\Delta F=1$ decays that govern $s\to d$ and $b\to d, s$ transitions in the Standard Model (SM) and beyond, at the Next-to-Leading…

高能物理 - 唯象学 · 物理学 2021-12-22 Jason Aebischer , Christoph Bobeth , Andrzej J. Buras , Jacky Kumar , Mikołaj Misiak