Results 41 to 50 of about 20,648,949 (270)
Pion generalized parton distributions within a fully covariant constituent quark model [PDF]
, 2016 We extend the investigation of the generalized parton distribution for a charged pion within a fully covariant constituent quark model, in two respects: (1) calculating the tensor distribution and (2) adding the treatment of the evolution, needed for ...
C. Fanelli +4 more
semanticscholar +1 more source
Two-solar-mass hybrid stars: A two model description using the Nambu-Jona-Lasinio quark model [PDF]
, 2016 Hybrid stars with a quark phase described by the Nambu-Jona-Lasinio model are studied. The hadron-quark model used to determine the stellar matter equation of state favors the appearance of quark matter: the coincidence of the deconfinement and chiral ...
R. C. Pereira, P. Costa, C. Providencia
semanticscholar +1 more source
Quark-gluon double parton distributions in the light-front dressed quark model [PDF]
, 2016 We study parton distributions for two partons, a quark and a gluon, in the light-front dressed quark model, with a focus on the correlations between the two partons.
T. Kasemets, A. Mukherjee
semanticscholar +1 more source
Search for doubly-heavy dibaryons in a quark model [PDF]
, 2016 We study the stability of hexaquark systems containing two heavy quarks and four light quarks within a simple quark model. No bound or metastable state is found.
J. Vijande +3 more
semanticscholar +1 more source
Quark matter and quark stars at finite temperature in Nambu–Jona-Lasinio model
European Physical Journal C: Particles and Fields, 2017 We extend the SU(3) Nambu–Jona-Lasinio (NJL) model to include two types of vector interaction. Using these two types of vector interaction in NJL model, we study the quark symmetry free energy in asymmetric quark matter, the constituent quark mass, the ...
Peng-Cheng Chu +6 more
doaj +1 more source
Thermoelectric transport coefficients of quark matter
European Physical Journal C: Particles and Fields, 2022 A thermal gradient and/or a chemical potential gradient in a conducting medium can lead to an electric field, an effect known as thermoelectric effect or Seebeck effect.
Aman Abhisek +3 more
doaj +1 more source
Spectrum of heavy baryons in the quark model [PDF]
, 2015 Single- and double- heavy baryons are studied in the constituent quark model. The model Hamiltonian is chosen as a standard one with two exceptions : (1) The color-Coulomb term depend on quark masses, and (2) an antisymmetric $LS$ force is introduced ...
T. Yoshida +4 more
semanticscholar +1 more source
Transverse momentum and transverse momentum distributions in the MIT bag model
Physics Letters B, 2022 The typical transverse momentum of a quark in the proton is a basic property of any QCD based model of nucleon structure. However, calculations in phenomenological models typically give rather small values of transverse momenta, which are difficult to ...
A.I. Signal, F.G. Cao
doaj
Light-front holographic ρ-meson distributions in the momentum space
Journal of High Energy Physics, 2021 We present the leading-twist quark transverse momentum-dependent parton distribution functions (TMDs) for the spin-1 target, such as the ρ-meson, in the light-front framework.
Satvir Kaur +2 more
doaj +1 more source
The spin-symmetry of the quark model [PDF]
The European Physical Journal C, 1999 Corrections to the exact heavy--quark symmetry results are expected to follow the $1/m_{Q}$ mass effect of the heavy--quark. We show, by an explicit calculation, that there is something other than the mass effect that suppresses the breaking of the spin symmetry.
Patrick J. O'Donnell +2 more
openaire +3 more sources