Results 81 to 90 of about 2,336,278 (343)

Ultraviolet completion of a composite asymmetric dark matter model with a dark photon portal

open access: yesJournal of High Energy Physics, 2019
Composite asymmetric dark matter scenarios naturally explain why the dark matter mass density is comparable with the visible matter mass density. Such scenarios generically require some entropy transfer mechanism below the composite scale; otherwise ...
Masahiro Ibe   +4 more
doaj   +1 more source

Lepto-axiogenesis

open access: yesJournal of High Energy Physics, 2021
We propose a baryogenenesis mechanism that uses a rotating condensate of a Peccei-Quinn (PQ) symmetry breaking field and the dimension-five operator that gives Majorana neutrino masses.
Raymond T. Co   +4 more
doaj   +1 more source

Testing the standard model and beyond [PDF]

open access: yesAIP Conference Proceedings, 1998
This paper is based on lectures presented to mathematical physicists and attempts to provide an overview of the present status of the Standard Model, its experimental tests, phenomenological and experimental motivations for going beyond the Standard Model via supersymmetry and grand unification, and ways to test these ideas with particle accelerators.
openaire   +3 more sources

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Dark matter in E 6 Grand unification

open access: yesJournal of High Energy Physics, 2018
We discuss fermionic dark matter in non-supersymmetric E 6 Grand Unification. The fundamental representation of E 6 contains, in addition to the standard model fermions, exotic fermions and we argue that one of them is a viable, interesting dark matter ...
Jakob Schwichtenberg
doaj   +1 more source

Yukawa ratio predictions in non-renormalizable SO(10) GUT models

open access: yesJournal of High Energy Physics, 2020
Since SO(10) GUTs unify all fermions of the Standard Model plus a right-chiral neutrino in a representation 16 per family, they have the potential to be maximally predictive regarding the ratios between the masses (or Yukawa couplings) of different ...
Stefan Antusch   +2 more
doaj   +1 more source

Nucleation is more than critical: A case study of the electroweak phase transition in the NMSSM

open access: yesJournal of High Energy Physics, 2021
Electroweak baryogenesis is an attractive mechanism to generate the baryon asymmetry of the Universe via a strong first order electroweak phase transition.
Sebastian Baum   +4 more
doaj   +1 more source

Search for physics beyond the standard model in multilepton final states in proton-proton collisions at $\sqrt{s} =$ 13 TeV [PDF]

open access: yes, 2019
A search for physics beyond the standard model in events with at least three charged leptons (electrons or muons) is presented. The data sample corresponds to an integrated luminosity of 137 fb$^{-1}$ of proton-proton collisions at $\sqrt{s} =$ 13 TeV ...
A. Sirunyan   +499 more
semanticscholar   +1 more source

Single cis‐elements in brassinosteroid‐induced upregulated genes are insufficient to recruit both redox states of the BIL1/BZR1 DNA‐binding domain

open access: yesFEBS Letters, EarlyView.
Phytohormone brassinosteroid‐induced gene regulation by the transcription factor BIL1/BZR1 involves redox‐dependent DNA‐binding alternation and interaction with the transcription factor PIF4. The reduced BIL1/BZR1 dimer binds preferred cis‐elements, while oxidation alters its oligomerization state and disrupts DNA‐binding ability.
Shohei Nosaki   +4 more
wiley   +1 more source

Gravitational waves and dark photon dark matter from axion rotations

open access: yesJournal of High Energy Physics, 2021
An axion rotating in field space can produce dark photons in the early universe via tachyonic instability. This explosive particle production creates a background of stochastic gravitational waves that may be visible at pulsar timing arrays or other ...
Raymond T. Co   +2 more
doaj   +1 more source

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