J. Kumar

activity

20152023

most citedWilson: a Python package for the running and matching of Wilson coefficients above and below the electroweak scale

225 citations · 1.5k across the 39 of their papers we have counts for

collaborators

39 papers

hep-ph2023★ 7 cited

Kaon Physics Without New Physics in $ε_{K}$

Jason Aebischer, Andrzej J. Buras, Jacky Kumar

Despite the observation of significant suppression of $b \to s μ^{+} μ^{-}$ branching ratios no clear sign of New Physics (NP) has been identified in $Δ F = 2$ observables, in particular to…

hep-ph2022

Simple Rules for Evanescent Operators in One-Loop Basis Transformations

Jacky Kumar

The basis transformations of the effective operators often involve Fierz and other relations which are only valid in $D = 4$ space-time dimensions. In general, in $D$ space-time dime…

hep-ph2022★ 15 cited

Dimension-8 SMEFT Matching Conditions for the Low-Energy Effective Field Theory

Serge Hamoudou, Jacky Kumar, David London

In particle physics, the modern view is to categorize things in terms of effective field theories (EFTs). Above the weak scale, we have the SMEFT, formed when the heavy new physics…

hep-ph2022★ 1 cited

The $B$ Anomalies, the $U_{1}$ Leptoquark and Dark Matter

Geneviève Bélanger, Jacky Kumar, David London +1

The present-day $B$ -anomalies involving $b \to s μ^{+} μ^{-}$ or $b \to c τ^{-} ν ˉ$ transitions can all be explained with the addition of a vector $U_{1}$ leptoquark with a mass of $M…

hep-ph2022

On the Importance of Rare Kaon Decays: A Snowmass 2021 White Paper

Jason Aebischer, Andrzej J. Buras, Jacky Kumar

We stress the importance of precise measurements of rare decays $K^{+} \to π^{+} ν ν ˉ$ , $K_{L} \to π^{0} ν ν ˉ$ , $K_{L, S} \to μ^{+} μ^{-}$ and $K_{L, S} \to π^{0} ℓ^{+} ℓ^{-}$ for the sea…

hep-ph2022★ 18 cited

NLO QCD Renormalization Group Evolution for Non-Leptonic $Δ F = 2$ Transitions in the SMEFT

Jason Aebischer, Andrzej J. Buras, Jacky Kumar

We present for the first time NLO QCD Renormalization Group (RG) evolution matrices for non-leptonic $Δ F = 2$ transitions in the Standard Model Effective Field Theory (SMEFT). To thi…

Kaon Physics Without New Physics in εK​

Simple Rules for Evanescent Operators in One-Loop Basis Transformations

Dimension-8 SMEFT Matching Conditions for the Low-Energy Effective Field Theory

The B Anomalies, the U1​ Leptoquark and Dark Matter

On the Importance of Rare Kaon Decays: A Snowmass 2021 White Paper

NLO QCD Renormalization Group Evolution for Non-Leptonic ΔF=2 Transitions in the SMEFT

Kaon Physics Without New Physics in $ε_{K}$

The $B$ Anomalies, the $U_{1}$ Leptoquark and Dark Matter

NLO QCD Renormalization Group Evolution for Non-Leptonic $Δ F = 2$ Transitions in the SMEFT