Results 91 to 100 of about 3,754 (159)
Probing the flavour-blind SMEFT: EFT validity and the interplay of energy scales
Journal of High Energy PhysicsThe Standard Model Effective Field Theory (SMEFT) offers a systematic approach to study potential deviations from the Standard Model (SM) through higher-dimensional operators that encapsulate new physics effects.
Luca Mantani, Veronica Sanz
doaj +1 more source
The Global Electroweak and Higgs Fits in the LHC era
, 2017 We update the global fit to electroweak precision observables, including the effect of the latest measurements at hadron colliders of the $W$ and top-quark masses and the effective leptonic weak mixing angle.
Ciuchini, Marco +6 more
core +1 more source
, 2017 The minimal seesaw scenario can radiatively generate the Higgs potential to induce electroweak symmetry breaking while supplying an origin of the Higgs vacuum expectation value from an underlying Majorana scale.
Brivio, llaria, Trott, Michael
core +1 more source
Reactor neutrino oscillations as constraints on effective field theory
Journal of High Energy Physics, 2019 We study constraints on the Standard Model Effective Field Theory (SMEFT) from neutrino oscillations in short-baseline reactor experiments. We calculate the survival probability of reactor antineutrinos at the leading order in the SMEFT expansion, that ...
Adam Falkowski +2 more
doaj +1 more source
Higgs production from anomalous gluon dynamics
Journal of High Energy PhysicsWe present a two-loop analysis of the contributions to Higgs production via gluon-gluon fusion arising from the triple-gluon operator in the Standard Model effective field theory (SMEFT).
Ulrich Haisch
doaj +1 more source
CP Violation in Leptonic Rare $B^0_s$ Decays as a Probe of New Physics
, 2017 The decay $B^0_s\to\mu^+\mu^-$ is a key probe for the search of physics beyond the Standard Model. While the current measurements of the corresponding branching ratio agree with the Standard Model within the uncertainties, significant New-Physics effects
Espinosa, Daniela Galárraga +3 more
core +5 more sources
SMEFT predictions for semileptonic processes
Physical Review DThe SU(2)L×U(1)Y invariance of the Standard Model effective field theory (SMEFT) predicts multiple restrictions in the space of Wilson coefficients of U(1)em invariant effective Lagrangians such as the low-energy effective field theory (LEFT), used for low-energy flavor physics observables, or the Higgs effective field theory (HEFT) in unitary gauge ...
Siddhartha Karmakar +2 more
openaire +2 more sources
Two-loop anomalous dimensions for baryon-number-violating operators in SMEFT
Journal of High Energy PhysicsWe compute the two-loop renormalization-group equations for the baryon-number-violating dimension-six operators in the SMEFT. This includes all three gauge interactions, the Yukawa, and Higgs self-interaction contributions.
Sumit Banik +3 more
doaj +1 more source
Low-energy effective field theory below the electroweak scale: operators and matching
Journal of High Energy Physics, 2018 The gauge-invariant operators up to dimension six in the low-energy effective field theory below the electroweak scale are classified. There are 70 Hermitian dimension-five and 3631 Hermitian dimension-six operators that conserve baryon and lepton number,
Elizabeth E. Jenkins +2 more
doaj +1 more source
Global fit to $b \to c \tau \nu$ transitions
, 2019 We perform a general model-independent analysis of $b \to c \tau \bar{\nu}_\tau $ transitions, including measurements of $\mathcal{R}_D$, $\mathcal{R}_{D^*}$, their $q^2$ differential distributions, the recently measured longitudinal $D^*$ polarization ...
Jung, Martin +3 more
core +1 more source