Results 51 to 60 of about 119,582 (346)

Axion couplings in grand unified theories

open access: yesJournal of High Energy Physics, 2022
Abstract We show that the couplings of axions to gauge bosons are highly restricted in Grand Unified Theories where the standard model is embedded in a simple 4D gauge group. The topological nature of these couplings allows them to be matched from the UV to the IR, and the ratio of the anomaly with photons and gluons for any axion ...
Prateek Agrawal, Michael Nee, Mario Reig
openaire   +4 more sources

Fermion Mass Hierarchy in the Grand Unified Theory on an S1/(Z2 ×Z2′) Orbifold [PDF]

open access: yes, 2001
We propose a simple grand unified theory in which the fifth dimensional coordinate is compactified on an S 1 /(Z 2 × Z' 2 ) orbifold. This model is based on the supersymmetric flipped SU(5) x U(1) grand unified theory, which can realize not only the ...
N. Haba   +4 more
semanticscholar   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Confronting electroweak fine-tuning with No-Scale Supergravity

open access: yesPhysics Letters B, 2015
Applying No-Scale Supergravity boundary conditions at a heavy unification scale to the Flipped SU(5) grand unified theory with extra TeV-scale vector-like multiplets, i.e.
Tristan Leggett   +4 more
doaj   +1 more source

Viable supersymmetric models with an inverted scalar mass hierarchy at the grand unified theory scale [PDF]

open access: yes, 2000
Supersymmetric models with an inverted mass hierarchy (IMH: multi-TeV first and second generation matter scalars, and sub-TeV third generation and Higgs scalars) have been proposed to ameliorate phenomenological problems arising from flavor changing ...
H. Baer   +4 more
semanticscholar   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Relation between proton decay and PMNS phase in the minimal SUSY SO(10) GUT

open access: yesPhysics Letters B, 2017
Proton decay is one of the most important predictions of the grand unified theory (GUT). In the supersymmetric (SUSY) GUT, proton decays via the dimension-five operators need to be suppressed.
Takeshi Fukuyama   +2 more
doaj   +1 more source

Muon anomalous magnetic moment and Higgs potential stability in the 331 model from SU(6)

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We consider a $$SU(3)_c \times SU(3)_L \times U(1)_X$$ S U ( 3 ) c × S U ( 3 ) L × U ( 1 ) X model from a SU(6) Grand Unified Theory (GUT). In order to explain the anomalous magnetic moments of muon and electron, we introduce two new scalar triplets ...
Tianjun Li, Junle Pei, Wenxing Zhang
doaj   +1 more source

The algebra of grand unified theories [PDF]

open access: yesBulletin of the American Mathematical Society, 2010
The Standard Model of particle physics may seem complicated and arbitrary, but it has hidden patterns that are revealed by the relationship between three "grand unified theories": theories that unify forces and particles by extending the Standard Model symmetry group U(1) x SU(2) x SU(3) to a larger group.
Baez, John, Huerta, John
openaire   +5 more sources

CP violation in the μ→3e process and supersymmetric grand unified theory [PDF]

open access: yes, 1997
A triple vector correlation in the ${\ensuremath{\mu}}^{+}\ensuremath{\rightarrow}{e}^{+}{e}^{+}{e}^{\ensuremath{-}}$ decay with polarized muons is investigated as a probe to $\mathrm{CP}$ violating coupling constants in supersymmetric models.
Y. Okada, Ken-ichi Okumura, Y. Shimizu
semanticscholar   +1 more source

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