Results 111 to 120 of about 1,059 (279)

Explaining the structure of quark and lepton mass matrices via flavour non-universal gauge groups [PDF]

open access: yes
openThe origin of the hierarchical structure of quark and lepton mass matrices is one of the main open problems in particle physics. An interesting attempt to address this problem is offered by the hypothesis of flavour non-universal gauge groups.
SAINAGHI, ANDREA
core  

Rare B decays and minimal flavour violating New Physics [PDF]

open access: yes, 2009
We discuss some interesting effective field theories beyond the Standard Model with explicit flavour symmetries, which can account for the available experimental results and, at the same time, provide interesting and falsifiable prediction on flavour ...
Baracchini, E.
core   +1 more source

Breaking Standard Model global symmetries with the tau lepton

open access: yesSciPost Physics Proceedings
Properties of the dynamics of the Standard Model processes such as lepton flavour preservation and lepton, or baryon, number conservation, are usually taken for granted.
Jorge Portolés
doaj   +1 more source

Spin-Flavour Symmetry and Contractions Towards Classical Space-Time Symmetry [PDF]

open access: yesInternational Journal of Modern Physics A, 1997
A classification scheme of hadrons is proposed on the basis of the division algebra H of quaternions and an appropriate geometry. This scheme suggests strongly to understand flavour symmetry in another manner than from standard symmetry schemes. In our approach, we do not start from "exact" symmetry groups like SU(2) × SU(2) chiral symmetry and impose
openaire   +3 more sources

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

open access: yesThe Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom   +4 more
wiley   +1 more source

Flavour Symmetries and Models of Neutrino Mixing

open access: yes, 2012
In my Bachelor thesis the theory of finite discrete groups is reviewed with respect to the alternating group A4. Neutrinos in the standard model and the implications of neutrino oscillations are discussed.
Kolb, M.
core  

Modular weights of wave functions on magnetized torus

open access: yesJournal of High Energy Physics
We study the origin of modular weights of wave functions in magnetized T 2 models. It is explicitly demonstrated that the modular weights of the wave functions on magnetized T 2 are equivalent to their mass level.
Tim Jeric   +4 more
doaj   +1 more source

A critical reappraisal of the carotid sinus and carotid bulb: Distinguishing neurohistological function from vascular geometry

open access: yesThe Anatomical Record, EarlyView.
This review redefines the carotid bulb (CB) as a variable geometric dilation shaped by hemodynamics and the carotid sinus (CS) as a conserved neurohistological baroreceptor field. Distinguishing these entities clarifies a century of anatomical confusion and links geometry, neurohistology, and clinical interpretation within a unified framework ...
Răzvan Costin Tudose   +2 more
wiley   +1 more source

Leptons and Higgs with discrete flavour and charge-parity symmetries

open access: yes, 2016
This thesis concerns itself with two seemingly disjoint topics that are interesting on their own, but that come to their full bloom when combined. These two topics are the violation of CP and the so-called flavour problem.
Neder, Thomas
core  

The Flavour Portal to Dark Matter

open access: yes, 2015
We present a class of models in which dark matter (DM) is a fermionic singlet under the Standard Model (SM) gauge group but is charged under a symmetry of flavour that acts as well on the SM fermions. Interactions between DM and SM particles are mediated
Crivellin, Andreas   +2 more
core   +1 more source

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