Results 111 to 120 of about 4,794 (202)

Gauge-invariant implications of the LHCb measurements on Lepton-Flavour Non-Universality

, 2017
We study the implications of the recent measurements of $R_K$ and $R_{K^*}$ by the LHCb collaboration. We do that by adopting a model-independent approach based on the Standard Model Effective Field Theory (SMEFT), in which the dominant new physics ...
Celis, Alejandro, Fuentes-Martin, Javier, Vicente, Avelino, Virto, Javier   +3 more
core   +1 more source

Colorful Imprints of Heavy States in the Electroweak Effective Theory [PDF]

, 2019
We analyze heavy states from generic ultraviolet completions of the Standard Model in a model-independent way and investigate their implications on the low-energy couplings of the electroweak effective theory.
Krause, Claudius, Pich, Antonio, Rosell, Ignasi, Santos, Joaquín, Sanz-Cillero, Juan José   +4 more
core   +4 more sources

Complete UV Resonances of the Dimension-8 SMEFT Operators [PDF]

, 2023
Hao-Lin Li, Yu-Han Ni, Ming-Lei Xiao, Jiang-Hao Yu   +3 more
openalex   +1 more source

$b\to c\tau\nu$ Transitions in the Standard Model Effective Field Theory

, 2019
The $R(D^{(\ast)})$ anomalies observed in $B\to D^{(\ast)}\tau\nu$ decays have attracted much attention in recent years. In this paper, we study the $B\to D^{(\ast)}\tau\nu$, $\Lambda_b\to\Lambda_c\tau\nu$, $B_c\to (J/\psi,\,\eta_c)\tau\nu$, $B\to X_c ...
Hu, Quan-Yi, Li, Xin-Qiang, Yang, Ya-Dong   +2 more
core   +1 more source

Effective field theory interpretation of lepton magnetic and electric dipole moments

Journal of High Energy Physics, 2021
We perform a model-independent analysis of the magnetic and electric dipole moments of the muon and electron. We give expressions for the dipole moments in terms of operator coefficients of the low-energy effective field theory (LEFT) and the Standard ...
Jason Aebischer, Wouter Dekens, Elizabeth E. Jenkins, Aneesh V. Manohar, Dipan Sengupta, Peter Stoffer   +5 more
doaj   +1 more source

Use and reuse of SMEFT

, 2020
In this work we address three questions: can we successfully describe (observed) deviations from the standard model in the SMEFT language? Can we learn something about the underlying, beyond the standard model, physics using the SMEFT language? If no deviation is observed, how to proceed?
David, André, Passarino, Giampiero
openaire   +2 more sources

A case study of SMEFT O 1 / Λ 4 $$ \mathcal{O}\left(1/{\Lambda}^4\right) $$ effects in diboson processes: pp → W ±(ℓ ± ν)γ

Journal of High Energy Physics
In this paper we explore pp → W ± (ℓ ± ν)γ to O 1 / Λ 4 $$ \mathcal{O}\left(1/{\Lambda}^4\right) $$ in the SMEFT expansion. Calculations to this order are necessary to properly capture SMEFT contributions that grow with energy, as the interference ...
Adam Martin
doaj   +1 more source

Renormalisation of SMEFT bosonic interactions up to dimension eight by LNV operators [PDF]

, 2023
Supratim Das Bakshi, Álvaro Díaz-Carmona   +1 more
openalex   +1 more source

Holomorphy without supersymmetry in the Standard Model Effective Field Theory

Physics Letters B, 2014
The anomalous dimensions of dimension-six operators in the Standard Model Effective Field Theory (SMEFT) respect holomorphy to a large extent. The holomorphy conditions are reminiscent of supersymmetry, even though the SMEFT is not a supersymmetric ...
Rodrigo Alonso, Elizabeth E. Jenkins, Aneesh V. Manohar   +2 more
doaj   +1 more source

Resolving the flavor structure in the MFV-SMEFT [PDF]

, 2023
Sebastian Bruggisser, Danny van Dyk, Susanne Westhoff   +2 more
openalex   +1 more source