Results 21 to 30 of about 28,619 (233)

Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modes

open access: yesJournal of High Energy Physics, 2022
Perturbative quantum corrections to primordial power spectra are important for testing the robustness and the regime of validity of inflation as an effective field theory.
Suddhasattwa Brahma   +2 more
doaj   +1 more source

Pole-skipping of gravitational waves in the backgrounds of four-dimensional massive black holes

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Pole-skipping is a property of gravitational waves dictated by their behaviour at horizons of black holes. It stems from the inability to unambiguously impose ingoing boundary conditions at the horizon at an infinite discrete set of Fourier modes.
Sašo Grozdanov, Mile Vrbica
doaj   +1 more source

Charged and neutral B ¯ u , d , s $$ {\overline{B}}_{u,d,s} $$ → γ form factors from light cone sum rules at NLO

open access: yesJournal of High Energy Physics, 2021
We present the first analytic O α s $$ \mathcal{O}\left({\alpha}_s\right) $$ -computation at twist-1,2 of the B ¯ u , d , s $$ {\overline{B}}_{u,d,s} $$ → γ form factors within the framework of sum rules on the light-cone. These form factors describe the
Tadeusz Janowski   +2 more
doaj   +1 more source

Classical Yang-Mills observables from amplitudes

open access: yesJournal of High Energy Physics, 2020
The double copy suggests that the basis of the dynamics of general relativity is Yang-Mills theory. Motivated by the importance of the relativistic two-body problem, we study the classical dynamics of colour-charged particle scattering from the ...
Leonardo de la Cruz   +3 more
doaj   +1 more source

Boomerang webs up to three-loop order

open access: yesJournal of High Energy Physics, 2021
Webs are sets of Feynman diagrams which manifest soft gluon exponentiation in gauge theory scattering amplitudes: individual webs contribute to the logarithm of the amplitude and their ultraviolet renormalization encodes its infrared structure.
Einan Gardi   +6 more
doaj   +1 more source

Philosophical perspectives on ad hoc-hypotheses and the Higgs mechanism [PDF]

open access: yes, 2013
We examine physicists' charge of adhocness against the Higgs mechanism in the Standard Model of elementary particle physics. We argue that even though this charge never rested on a clear-cut and well-entrenched definition of "ad hoc", it is based on ...
Harlander, Robert V.   +6 more
core   +1 more source

First look at the physics case of TLEP [PDF]

open access: yes, 2013
The discovery by the ATLAS and CMS experiments of a new boson with mass around 125 GeV and with measured properties compatible with those of a Standard-Model Higgs boson, coupled with the absence of discoveries of phenomena beyond the Standard Model at ...
E. Lançon   +588 more
core   +1 more source

Nuclear uncertainties in the determination of proton PDFs

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
We show how theoretical uncertainties due to nuclear effects may be incorporated into global fits of proton parton distribution functions (PDFs) that include deep-inelastic scattering and Drell–Yan data on nuclear targets.
Richard D. Ball   +2 more
doaj   +1 more source

HIGGS PHYSICS AND SUPERSYMMETRY [PDF]

open access: yesInternational Journal of Modern Physics A, 2012
A brief overview of Higgs physics and of supersymmetry is given. The central theme of the overview is to explore the implications of the recent discovery of a Higgs-like particle regarding the prospects for the discovery of supersymmetry assuming that it is indeed the spin-0 CP even boson that enters in the spontaneous breaking of the electroweak ...
openaire   +2 more sources

Observation of a new particle in the search for the Standard Model Higgs boson at the CMS detector [PDF]

open access: yes, 2013
The discovery of the Standard Model (SM) Higgs boson is one of the primary physics objectives of the Large Hadron Collider at CERN. This thesis describes a search carried out for the SM Higgs boson on data collected during the 2011 and 2012 proton ...
Wardle, Nicholas
core   +1 more source

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