Results 111 to 120 of about 3,683 (143)

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

Triple-gauge couplings in LHC diboson production: a SMEFT view from every angle

Journal of High Energy Physics
This study explores fully leptonic WZ and WW production at the LHC within the SMEFT framework at NLO in QCD, focusing on both CP-even and CP-odd triple-gauge-coupling dimension-six operators.
Hesham El Faham, Giovanni Pelliccioli, Eleni Vryonidou   +2 more
doaj   +1 more source

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

Dimension-8 SMEFT contact-terms for vector-pair production via on-shell Higgsing

Journal of High Energy Physics
We derive the dimension-8 standard-model effective theory (SMEFT) contact terms relevant for vector-pair production at the LHC and lepton colliders.
Jared M. Goldberg, Hongkai Liu, Yael Shadmi   +2 more
doaj   +1 more source

Lepton flavor violation and dilepton tails at the LHC. [PDF]

Eur Phys J C Part Fields, 2020
Angelescu A, Faroughy DA, Sumensari O.
europepmc   +1 more source

ε ' / ε in the Standard Model at the Dawn of the 2020s. [PDF]

Eur Phys J C Part Fields, 2020
Aebischer J, Bobeth C, Buras AJ.
europepmc   +1 more source