Results 151 to 160 of about 21,335,486 (310)

The problem of repulsive quark interactions - Lattice versus mean field models

open access: yes, 2011
We calculate the 2nd and 4th order quark number susceptibilities at zero baryochemical potential, using a PNJL approach and an approach which includes, in a single model, quark and hadronic degrees of freedom.
Abuki   +45 more
core   +1 more source

QCD θ-vacua from the chiral limit to the quenched limit

open access: yesNuclear Physics B, 2014
We investigate the dependence of the QCD vacuum structure on the θ-angle and quark mass, using the Di-Vecchia–Veneziano model. Although the Di-Vecchia–Veneziano model is a chiral effective model, it contains the topological properties of the pure Yang ...
Kazuya Mameda
doaj   +1 more source

RELATIVISTIC QUARK MODEL

open access: yesFizika B : a journal of experimental and theoretical physics, 1999
A general Lorentz-covariant quark model of mesons, whose nonrelativistic limit corresponds to Isgur-Scora-Grinstein-Wise model, is constructed. It possesses the heavy quark symmetry and can be easily applied to calculation of form factors. Besides it can be engaged in novel tasks, such a the investigation of the two photon decay of scalar mesons.
Horvatić, D., Tadić, D., Žganec, S.
openaire   +4 more sources

A relativistic treatment of pion wave functions in the annihilation antiproton-proton -> pi^-pi^+

open access: yes, 2004
Quark model intrinsic wave functions of highly energetic pions in the reaction \bar pp->\pi^-\pi^+ are subjected to a relativistic treatment. The annihilation is described in a constituent quark model with A2 and R2 flavor-flux topology and the ...
B. El-Bennich   +3 more
core   +1 more source

CP violation of quarks in A4 modular invariance

open access: yesPhysics Letters B, 2019
We discuss the quark mass matrices in the A4 modular symmetry, where the A4 triplet of Higgs is introduced for each up-quark and down-quark sectors, respectively.
Hiroshi Okada, Morimitsu Tanimoto
doaj   +1 more source

The End of the Constituent Quark Model? [PDF]

open access: yesAIP Conference Proceedings, 2004
Conference Summary Talk Hadron ...
openaire   +4 more sources

Equation of state of quark-gluon plasma using a simple phenomenological model

open access: yesEPJ Web of Conferences, 2018
The equation of state (EoS) of quark-gluon plasma (QGP) using a phenomenological model is studied in which finite value of quark mass is modified as effective mass.
Kumar Yogesh
doaj   +1 more source

Quark Model with Factorizability Assumption [PDF]

open access: bronze, 1967
Masaaki Kawaguchi   +2 more
openalex   +1 more source

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