Results 71 to 80 of about 3,683 (143)

Improving the global SMEFT picture with bounds on neutrino NSI

open access: yesJournal of High Energy Physics
We analyze how neutrino oscillation and coherent elastic neutrino-nucleus scattering data impact the global SMEFT fit. We first review the mapping between the SMEFT parameters and the so-called NSI framework, commonly considered in the neutrino ...
Pilar Coloma   +5 more
doaj   +1 more source

An EWPD SMEFT likelihood for the LHC — and how to improve it with measurements of W and Z boson properties

open access: yesJournal of High Energy Physics
This paper presents a computer code for analyzing electroweak precision data (EWPD) in the framework of the Standard Model Effective Field Theory (SMEFT), highlights the importance of recent ATLAS and CMS precision measurements, and introduces a novel ...
Hannes Mildner
doaj   +1 more source

Use and reuse of SMEFT

open access: yes, 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

EFT Diagrammatica. Part II. Tracing the UV origin of bosonic D6 CPV and D8 SMEFT operators

open access: yesJournal of High Energy Physics, 2022
In recent times, SMEFT, along with a superlative repertoire of theoretical and computational tools, has emerged as an efficacious platform to test the viability of proposed BSM scenarios. With symmetry as the backbone, higher mass dimensional (≥ 5) SMEFT
Wrishik Naskar   +2 more
doaj   +1 more source

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

open access: yes, 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   +3 more
core   +1 more source

Renormalization group equations for the SMEFT operators up to dimension seven

open access: yesJournal of High Energy Physics, 2023
In this paper, we propose a Green’s basis and also a new physical basis for dimension-seven (dim-7) operators, which are suitable for the matching of ultraviolet models onto the Standard Model effective field theory (SMEFT) and the deviation of ...
Di Zhang
doaj   +1 more source

Putting SMEFT Fits to Work

open access: yes, 2020
The Standard Model Effective Field Theory (SMEFT) provides a consistent framework for comparing precision measurements at the LHC to the Standard Model. The observation of statistically significant non-zero SMEFT coefficients would correspond to physics beyond the Standard Model (BSM) of some sort.
Dawson, Sally   +2 more
openaire   +2 more sources

SMEFT interpretation of $\Delta F = 2$ transitions

open access: yesProceedings of 11th International Workshop on the CKM Unitarity Triangle — PoS(CKM2021), 2023
Comment: 7 pages, 2 figures, Contribution to the proceedings of the 11th International Workshop on the CKM Unitarity Triangle (CKM2021), 22-26 November ...
openaire   +2 more sources

Renormalisation group effects on SMEFT interpretations of LHC data

open access: yesJournal of High Energy Physics, 2023
We explore the impact of Renormalisation Group (RG) effects in the Standard Model Effective Field Theory (SMEFT) interpretations of LHC measurements.
Rafael Aoude   +4 more
doaj   +1 more source

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

open access: yes, 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   +2 more
core   +1 more source

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