Results 111 to 120 of about 3,754 (159)

A proof of concept for matchete: an automated tool for matching effective theories. [PDF]

Eur Phys J C Part Fields, 2023
Fuentes-Martín J, König M, Pagès J, Thomsen AE, Wilsch F.   +4 more
europepmc   +1 more source

Aligned yet large dipoles: a SMEFT study

Journal of High Energy Physics
Abstract We study a non-universal flavor scenario at the level of the Standard Model Effective Field Theory, according to which the matrix of Wilson coefficients c uW of an up-type electroweak quark dipole operator is aligned with the up-type Yukawa coupling. Such an alignment usually follows
Quentin Bonnefoy, Jonathan Kley, Di Liu, Alejo N. Rossia, Chang-Yuan Yao   +4 more
openaire   +7 more sources

A viable Le-Lμ model with μ→e violation. [PDF]

Eur Phys J C Part Fields, 2023
Ardu M, Kirk F.
europepmc   +1 more source

NLO Standard model effective field theory for Higgs and EW precision data [PDF]

, 2016
A set of constructs, definitions, and propositions that present a systematic view of the Standard Model Effective Field Theory (SMEFT), i.e. how the influence of higher energy processes is localizable in a few structural properties which can be captured ...
Passarino, Giampiero
core   +1 more source

Future collider sensitivities to νSMEFT interactions

Journal of Physics G: Nuclear and Particle Physics
Abstract The discovery of neutrino oscillations and masses provides strong motivation to extend the Standard Model by including right-handed neutrinos, which lead to heavy neutrino states that could exist at the electroweak scale. These states may also be influenced by new high-scale, weakly interacting physics.
Lucía Duarte, Daniel Chalençon Maisian, Tomás Urruzola   +2 more
openaire   +2 more sources

Missing energy plus jet in the SMEFT

Journal of High Energy Physics
Abstract We study the production of dineutrinos in proton-proton collisions, with large missing transverse energy and an energetic jet as the experimental signature. Recasting a search from the ATLAS collaboration we work out constraints on semileptonic four-fermion operators, gluon and electroweak dipole operators and Z-penguins ...
Gudrun Hiller, Daniel Wendler
openaire   +3 more sources

SMEFT Corrections to $Z$ Boson Decays

, 2018
We compute the one-loop corrections to $Z$ decay properties from dimension-6 operators in the Standard Model Effective Field Theory (SMEFT) that contribute also to anomalous 3-gauge boson couplings and examine the relative sensitivity of the two processes to the anomalous couplings.
Dawson, Sally, Ismail, Ahmed
openaire   +2 more sources

Mapping between γ 5 schemes in the Standard Model Effective Field Theory

Journal of High Energy Physics
We explore the relation between two distinct prescriptions for γ 5 in dimensional regularization — the Breitenlohner Maison t’Hooft Veltman (BMHV) scheme and Naive Dimensional Regularisation (NDR).
S. Di Noi, R. Gröber, P. Olgoso
doaj   +1 more source

Total Drell–Yan in the flavorful SMEFT

The European Physical Journal C
Abstract We perform a global analysis of Drell–Yan production of charged leptons and dineutrinos, the latter in missing energy plus jet events, in proton–proton collisions within the Standard Model Effective Field Theory (SMEFT). The combination allows for the removal of flat directions, sharper limits and to probe more couplings than the ...
Gudrun Hiller, Lara Nollen, Daniel Wendler   +2 more
openaire   +3 more sources

Staying on top of SMEFT-likelihood analyses

SciPost Physics
We present a new global SMEFT analysis of LHC data in the top sector. After updating our set of measurements, we show how public ATLAS likelihoods can be incorporated into an external global analysis and how our analysis benefits from the additional information.
Nina Elmer, Maeve Madigan, Tilman Plehn, Nikita Schmal   +3 more
openaire   +3 more sources