Results 91 to 100 of about 4,440 (194)

Vector-like quarks coupling discrimination at the LHC and future hadron colliders

open access: yesJournal of High Energy Physics, 2017
The existence of new coloured states with spin one-half, i.e. extra-quarks, is a striking prediction of various classes of new physics models. Should one of these states be discovered during the 13 TeV runs of the LHC or at future high energy hadron ...
D. Barducci, L. Panizzi
doaj   +1 more source

Flavor asymmetry of light sea quarks in proton: a light-front spectator model

open access: yesEuropean Physical Journal C: Particles and Fields
We formulate a light-front spectator model for the proton that incorporates the presence of light sea quarks. In this particular model, the sea quarks are seen as active partons, whereas the remaining components of the proton are treated as spectators ...
Poonam Choudhary   +2 more
doaj   +1 more source

Long-Lived Heavy Quarks: A Review

open access: yesAdvances in High Energy Physics, 2013
We review the theoretical and experimental situation for long-lived heavy quarks, or bound states thereof, arising in simple extensions of the Standard Model.
Mathieu Buchkremer, Alexander Schmidt
doaj   +1 more source

Short-range correlations of partons & 3D nucleon structure

open access: yesEPJ Web of Conferences, 2014
Dynamical breaking of chiral symmetry in QCD is caused by non-perturbative interactions on a scale ρ ∼ 0.3 fm much smaller than the hadronic size R ∼ 1 fm.
Schweitzer P.
doaj   +1 more source

Quark Models and Quark Phenomenology

open access: yes, 1997
Invited Talk at Third Symposium on the History of Particle Physics, 20 ...
openaire   +2 more sources

Why is $${}^{208}_{82}\textrm{Pb}$$ 82 208 Pb the heaviest stable nuclide?

open access: yesEuropean Physical Journal C: Particles and Fields
In an effort to understand nuclei in terms of quarks we develop an effective theory to low-energy quantum chromodynamics in which a single quark contained in a nucleus is driven by a mean field due to other constituents of the nucleus.
B. P. Kosyakov   +2 more
doaj   +1 more source

QUARKS IN THE UNIVERSE

open access: yesInternational Journal of Modern Physics E, 2007
Matter in its present form was formed when our Universe emerged from the quark-gluon phase (QGP) at about 30mus into its evolution. To explore this early period in the laboratory, we study highly excited matter formed in relativistic heavy ion collision experiments: heavy nuclei crash into each other, and form compressed and energetically excited ...
openaire   +2 more sources

Confinement of quarks

open access: yesNuclear Physics A, 2003
A general introduction to the topological mechanism responsible for the absolute confinement of quarks inside hadronic bound states is given, including the effects of a finite instanton angle. We then propose a calculational technique for computing these states and their properties, where instead of topology we rely on a perturbative mechanism.
openaire   +2 more sources

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