Results 11 to 20 of about 896 (184)

Origin of life: β-sheet amyloid conformers as the primordial functional polymers on the early Earth and their role in the emergence of complex dynamic networks. [PDF]

open access: yesFEBS Lett
The amyloid world hypothesis of the origin‐of‐life posits that the first functional polymers on the early Earth were structurally stable cross‐β‐sheet‐based peptide amyloids capable of Darwinian‐like evolution. Peptide amyloids display self‐replication and information transfer, as well as catalytic, adaptive, and evolutive properties.
Maury CPJ.
europepmc   +2 more sources

The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post-War Period. [PDF]

open access: yesBer Wiss
Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Martinez JP.
europepmc   +2 more sources

Matching high-energy electroweak fermion loops onto the Fermi theory without higher dimensional operators

open access: yesNuclear Physics B, 2020
We derive the conditions for matching high-energy renormalizable Quantum Field Theories onto low-energy nonrenormalizable ones by means of the FDR approach described in [1]. Our procedure works order-by-order in the loop expansion and avoids the addition
Roberto Pittau
doaj   +1 more source

Top-quark electroweak interactions at high energy

open access: yesJournal of High Energy Physics, 2019
Modified interactions in the electroweak sector may lead to scattering amplitudes that grow with energy compared to their Standard Model (SM) counterparts.
Fabio Maltoni, Luca Mantani, Ken Mimasu
doaj   +1 more source

Electroweak limits on physics beyond the Standard Mode

open access: yesEPJ Web of Conferences, 2013
We briefly review the global Standard Model fit to electroweak precision data, and discuss the status of electroweak constraints on new interactions. We follow a general effective Lagrangian approach to obtain modelindependent limits on the dimension-six
Blas Jorge de
doaj   +1 more source

The Effective Description of Strong Electroweak Symmetry Breaking

open access: yesCommunications, 2010
The actual mechanism of electroweak symmetry breaking remains the last unsolved part of the Standard model of electroweak interactions. We review the general requirements that all possible solutions must fulfill.
Mikulas Gintner   +3 more
doaj   +1 more source

Catalyzed baryogenesis

open access: yesJournal of High Energy Physics, 2021
A novel mechanism, “catalyzed baryogenesis”, is proposed to explain the observed baryon asymmetry in our universe. In this mechanism, the motion of a ball-like catalyst provides the necessary out-of-equilibrium condition, its outer wall has CP-violating ...
Yang Bai   +3 more
doaj   +1 more source

Non-cancellation of electroweak logarithms in high-energy scattering

open access: yesPhysics Letters B, 2015
We study electroweak Sudakov corrections in high energy scattering, and the cancellation between real and virtual Sudakov corrections. Numerical results are given for the case of heavy quark production by gluon collisions involving the rates gg→tt¯,bb ...
Aneesh V. Manohar   +3 more
doaj   +1 more source

The anomalous case of axion EFTs and massive chiral gauge fields

open access: yesJournal of High Energy Physics, 2021
We study axion effective field theories (EFTs), with a focus on axion couplings to massive chiral gauge fields. We investigate the EFT interactions that participate in processes with an axion and two gauge bosons, and we show that, when massive chiral ...
Quentin Bonnefoy   +4 more
doaj   +1 more source

Ab Initio Study of (ν_{ℓ},ℓ^{-}) and (ν[over ¯]_{ℓ},ℓ^{+}) Inclusive Scattering in ^{12}C: Confronting the MiniBooNE and T2K CCQE Data

open access: yesPhysical Review X, 2020
We carry out an ab initio calculation of the neutrino flux-folded inclusive cross sections measured on ^{12}C by the MiniBooNE and T2K Collaborations in the charged-current quasielastic regime. The calculation is based on realistic two- and three-nucleon
A. Lovato   +4 more
doaj   +1 more source

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