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Status of the charged Higgs boson in two Higgs doublet models

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
The existence of charged Higgs boson(s) is inevitable in models with two (or more) Higgs doublets. Hence, their discovery would constitute unambiguous evidence for new physics beyond the Standard Model (SM).
A. Arbey   +3 more
doaj   +1 more source

Dilaton and massive hadrons in a conformal phase

open access: yesJournal of High Energy Physics, 2022
As the number of fermion fields is increased, gauge theories are expected to undergo a transition from a QCD-like phase, characterised by confinement and chiral symmetry breaking, to a conformal phase, where the theory becomes scale-invariant at large ...
Luigi Del Debbio, Roman Zwicky
doaj   +1 more source

QED corrections in B ¯ → K ¯ ℓ + ℓ − $$ \overline{B}\to \overline{K}{\mathrm{\ell}}^{+}{\mathrm{\ell}}^{-} $$ at the double-differential level

open access: yesJournal of High Energy Physics, 2020
We present a detailed analysis of QED corrections to B ¯ → K ¯ ℓ + ℓ − $$ \overline{B}\to \overline{K}{\mathrm{\ell}}^{+}{\mathrm{\ell}}^{-} $$ decays at the double-differential level.
Gino Isidori   +2 more
doaj   +1 more source

Notes on lattice observables for parton distributions: nongauge theories

open access: yesJournal of High Energy Physics, 2020
We review recent theoretical developments concerning the definition and the renormalization of equal-time correlators that can be computed on the lattice and related to Parton Distribution Functions (PDFs) through a factorization formula.
Luigi Del Debbio   +2 more
doaj   +1 more source

Two paths towards precision at a very high energy lepton collider

open access: yesJournal of High Energy Physics, 2021
We illustrate the potential of a very high energy lepton collider (from 10 to 30 TeV center of mass energy) to explore new physics indirectly in the vector boson fusion double Higgs production process and in direct diboson production at high energy ...
Dario Buttazzo   +2 more
doaj   +1 more source

Unitarity and predictiveness in new Higgs inflation

open access: yesJournal of High Energy Physics, 2018
In new Higgs inflation the Higgs kinetic terms are non-minimally coupled to the Einstein tensor, allowing the Higgs field to play the role of the inflaton.
Jacopo Fumagalli   +2 more
doaj   +1 more source

Higgs physics confronts the MW anomaly

open access: yesPhysics Letters B, 2022
The recent high-precision measurement of the W mass by the CDF collaboration is in sharp tension with the Standard Model prediction as obtained by the electroweak fit. If confirmed, this finding can only be explained in terms of new physics effects.
Luca Di Luzio   +2 more
doaj  

Parity doubling as a tool for right-handed current searches

open access: yesJournal of High Energy Physics, 2018
The V-A structure of the weak interactions leads to definite amplitude hierarchies in exclusive heavy-to-light decays mediated by b → (d, s)γ and b→d,sℓℓ¯ $$ b\to \left(d,\ s\right)\ell \overline{\ell} $$. However, the extraction of right-handed currents
James Gratrex, Roman Zwicky
doaj   +1 more source

Perturbative spacetimes from Yang-Mills theory

open access: yesJournal of High Energy Physics, 2017
The double copy relates scattering amplitudes in gauge and gravity theories. In this paper, we expand the scope of the double copy to construct spacetime metrics through a systematic perturbative expansion.
Andrés Luna   +6 more
doaj   +1 more source

Radiation and reaction at one loop

open access: yesJournal of High Energy Physics
We study classical radiation fields at next-to-leading order using the methods of scattering amplitudes. The fields of interest to us are sourced when two massive, point-like objects scatter inelastically, and can be computed from one-loop amplitudes ...
Asaad Elkhidir   +3 more
doaj   +1 more source

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