Results 51 to 60 of about 1,044 (153)

Froggatt-Nielsen meets the SMEFT

Journal of High Energy Physics
Abstract We study the matching of Froggatt-Nielsen theories of flavour onto the Standard Model Effective Field Theory (SMEFT), upon integrating out a heavy Beyond-the-Standard-Model (BSM) scalar ‘flavon’ whose vacuum expectation value breaks an Abelian flavour symmetry at energies ΛFN well above the electroweak scale, ΛFN
Eetu Loisa, Jim Talbert
openaire   +5 more sources

Top Quark Flavor Changing Couplings at a Muon Collider

Advances in High Energy Physics, Volume 2024, Issue 1, 2024.
There is growing interest in the development of a muon collider that would make it possible to produce lepton collisions at energies of several TeV. Among others, there can be significant contributions to electroweak gauge boson, Higgs boson, and top quark physics.
Daniel Ake, Antonio O. Bouzas, F. Larios, Roelof Bijker   +3 more
wiley   +1 more source

Scheming in the SMEFT. . . and a reparameterization invariance! [PDF]

Journal of High Energy Physics, 2017
41 pages, 8 tables, 8 figures. addendum in appendix - results obtained allowing two independent flavor contractions for the operator Q_ll in the U(3)^5 flavor symmetric ...
Brivio I., Trott M.
openaire   +7 more sources

Higgs associated production with a vector decaying to two fermions in the geoSMEFT

SciPost Physics
We present the inclusive calculations of a Higgs boson produced in association with massive vector bosons in the Standard Model Effective Field Theory (SMEFT) to order $1/\Lambda^4$ for the 13 TeV LHC.
Tyler Corbett, Adam Martin
doaj   +1 more source

Top, Higgs, diboson and electroweak fit to the Standard Model effective field theory

Journal of High Energy Physics, 2021
The search for effective field theory deformations of the Standard Model (SM) is a major goal of particle physics that can benefit from a global approach in the framework of the Standard Model Effective Field Theory (SMEFT).
John Ellis, Maeve Madigan, Ken Mimasu, Veronica Sanz, Tevong You   +4 more
doaj   +1 more source

Interpreting W mass measurements in the SMEFT [PDF]

Physics Letters B, 2016
6pp, 4 figures V2: minor typo corrections and text clarifications, matches journal ...
Bjørn, Mikkel, Trott, Michael
openaire   +4 more sources

SMEFT, a theory for SM deviations [PDF]

Proceedings of 38th International Conference on High Energy Physics — PoS(ICHEP2016), 2017
n ...
openaire   +3 more sources

Improving the global SMEFT picture with bounds on neutrino NSI

Journal 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, Enrique Fernández-Martínez, Jacobo López-Pavón, Xabier Marcano, Daniel Naredo-Tuero, Salvador Urrea   +5 more
doaj   +1 more source

Field reparametrization in SMEFT [PDF]

The European Physical Journal Plus, 2017
Debate topic for effective field theory (EFT) is the choice of a “basis” for ${\rm dim}= 6$ operators. Clearly all bases are equivalent as long as they are a “basis”, containing a minimal set of operators ...
openaire   +3 more sources

More accurate σ GG → h , Γ h → GG AA Ψ ¯ Ψ $$ \sigma \left(\mathcal{GG}\to h\right),\Gamma \left(h\to \mathcal{GG},\mathcal{AA},\overline{\Psi}\Psi \right) $$ and Higgs width results via the geoSMEFT

Journal of High Energy Physics
We develop Standard Model Effective Field Theory (SMEFT) predictions of σ( GG $$ \mathcal{GG} $$ → h), Γ(h → GG $$ \mathcal{GG} $$ ), Γ(h → AA $$ \mathcal{AA} $$ ) to incorporate full two loop Standard Model results at the amplitude level, in conjunction
Adam Martin, Michael Trott
doaj   +1 more source