Results 131 to 140 of about 4,794 (202)

A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector

open access: yesJournal of High Energy Physics, 2019
We present a novel framework for carrying out global analyses of the Standard Model Effective Field Theory (SMEFT) at dimension-six: SMEFiT. This approach is based on the Monte Carlo replica method for deriving a faithful estimate of the experimental and
Nathan P. Hartland   +6 more
doaj   +1 more source

Global fit to $b \to c \tau \nu$ transitions

open access: yes, 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

SMEFT at NNLO+PS: Vh production

open access: yesJournal of High Energy Physics
In the context of the Standard Model effective field theory (SMEFT) the next-to-next-to-leading (NNLO) QCD corrections to the Higgsstrahlungs (Vh) processes in hadronic collisions are calculated and matched to a parton shower (PS).
Rhorry Gauld, Ulrich Haisch, Luc Schnell
doaj   +1 more source

One-loop analysis of β decays in SMEFT [PDF]

open access: yesJournal of High Energy Physics
We perform a loop-level analysis of charged-current (CC) processes involving light leptons and quarks within the Standard Model Effective Field Theory (SMEFT).
M. Dawid, V. Cirigliano, W. Dekens
semanticscholar   +1 more source

Analytic results for electroweak precision observables at NLO in SMEFT

open access: yesJournal of High Energy Physics
We present analytic results for electroweak precision observables (EWPO) at next-to-leading order (NLO) in dimension-six SMEFT, with no assumptions on the flavour structure of SMEFT Wilson coefficients. The results are given in five different electroweak
Anke Biekötter, Benjamin D. Pecjak
doaj   +1 more source

Low-energy effective field theory below the electroweak scale: operators and matching

open access: yesJournal 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

Electroweak Corrections to Higgs to $\gamma\gamma$ and $W^+W^-$ in the SMEFT

open access: yes, 2018
Higgs decays to gauge boson pairs are a crucial ingredient in the study of Higgs properties, with the decay $H\rightarrow\gamma\gamma$ being particularly sensitive to new physics effects.
Dawson, Sally, Giardino, Pier Paolo
core   +1 more source

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