Results 271 to 280 of about 21,627,885 (312)

Strange quark matter and quark stars with the Dyson-Schwinger quark model

, 2016
.We calculate the equation of state of strange quark matter and the interior structure of strange quark stars in a Dyson-Schwinger quark model within rainbow or Ball-Chiu vertex approximation.
H. Chen, J. -. Wei, H. Schulze
semanticscholar   +1 more source

Ideal quarks and mesons in the relativistic quark model

Physical Review C, 1994
We propose a microscopic theory for interacting mesons and ideal quarks in the relativistic quark model using the time-dependent mean-field theory technique. For simplicity we examined the Nambu--Jona-Lasinio model. The dynamical chiral-symmetry breaking leads to a zero-frequency mode (pion) due to the restoration of chiral symmetry.
openaire   +2 more sources

The hypercentral Constituent Quark Model and its application to baryon properties

, 2015
The hypercentral Constituent Quark Model (hCQM) for the baryon structure is reviewed and its applications are systematically discussed. The model is based on a simple form of the quark potential, which contains a Coulomb-like interaction and a ...
M. Giannini, E. Santopinto
semanticscholar   +1 more source

Deuteron photodisintegration and quark models

Physical Review C, 1990
We have examined the behavior of the forward-to-backward ratio {ital R} of the cross section for the {sup 2}H({gamma},{ital p}){ital n} reaction. The data show a weak dependence of {ital R} on the photon energy and group around a value of 1.5 which agrees with the prediction of a simple quark model.
, De Sanctis E, , Kaidalov, , Kondratyuk
openaire   +2 more sources

Quark models⋆

The European Physical Journal A, 2008
The scope of a relativistically covariant constituent quark model of baryons based on the BetheSalpeter equation in instantaneous approximation is illustrated by a discussion of various baryon resonance observables such as static electromagnetic moments including a novel calculational procedure form factors and helicity amplitudes, semileptonic decays ...
openaire   +2 more sources

Quark-antiquark pairs in the quark model

AIP Conference Proceedings, 2011
We study the structure of the spin of the proton and the Λ hyperon in an unquenched quark model which incorporates the effects of quark‐antiquark pair creation via a microscopic, QCD‐inspired, quark‐antiquark creation mechanism. It is shown that the inclusion of the qq pairs leads to a sizeable contribution of the orbital angular momentum to the spin ...
Roelof Bijker, Elena Santopinto, Alejandro Ayala, Guillermo Contreras, Ildefonso Leon, Pedro Podesta   +5 more
openaire   +1 more source

Nucleon and flavor form factors in a light front quark model in AdS/QCD

, 2013
Using the light front wave functions for the nucleons in a quark model in AdS/QCD, we calculate the nucleon electromagnetic form factors. The flavor decompositions of the nucleon form factors are calculated from the GPDs in this model.
D. Chakrabarti, C. Mondal
semanticscholar   +1 more source

Massive quarks and the quark-parton model

Physical Review D, 1974
The parton-model result $\ensuremath{\nu}{W}_{2}(x)=\ensuremath{\Sigma}{i}^{}{{e}_{i}}^{2}x{f}_{i}(x)$ is derived for massive quarks in the case where partons are identified as quarks. A simple model of a bound-quark system is also given in order to illuminate the ideas behind the derivation.
openaire   +1 more source

A quark statistical model for quark fragmentation

Lettere al Nuovo Cimento, 1982
A simple model for fragmentation of a quark into a jet of hadrons is presented. It is based on a quark statistical consideration and treats both mesons and baryons on equal footing.
openaire   +1 more source

Antibody–drug conjugates: Smart chemotherapy delivery across tumor histologies

Ca-A Cancer Journal for Clinicians, 2022
Paolo Tarantino, Roberto Carmagnani Pestana, Shanu Modi   +2 more
exaly