Results 31 to 40 of about 1,215,586 (222)

Nucleon structure in a light-front quark model consistent with quark counting rules and data [PDF]

Phys. Rev. D 91, 054028 (2015), 2014
Using global fits of valence u and d quark parton distributions and data on quark and nucleon form factors in the Euclidean region, we derive a light-front quark model for the nucleon structure consistent with quark counting rules.
arxiv   +1 more source

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, Chandan Mondal, Harleen Dahiya   +2 more
doaj   +1 more source

Warm asymmetric quark matter and proto-quark stars within the confined-isospin-density-dependent mass model [PDF]

Phys. Rev. D 96, 103001 (2017), 2017
We extend the confined-isospin-density-dependent mass (CIDDM) model to include temperature dependence of the equivalent mass for quarks. Within the CIDDM model, we study the equation of state (EOS) for $\beta$-equilibrium quark matter, quark symmetry energy, quark symmetry free energy, and the properties of quark stars at finite temperature.
arxiv   +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, Xiao-Hua Li, Bin Wang, Yu-Min Dong, Yu-Yue Jia, Shu-Mei Wang, Hong-Yang Ma   +6 more
doaj   +1 more source

Quark matter symmetry energy and quark stars [PDF]

The Astrophysical Journal, 780:135, 2014, 2012
We extend the confined-density-dependent-mass (CDDM) model to include isospin dependence of the equivalent quark mass. Within the confined-isospin-density-dependent-mass (CIDDM) model, we study the quark matter symmetry energy, the stability of strange quark matter, and the properties of quark stars.
arxiv   +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  

Properties of color-flavor locked matter in a quasiparticle model

European Physical Journal C: Particles and Fields, 2023
We investigate the thermodynamical properties of color-flavor locked (CFL) quark matter at zero temperature, finite temperature, and strong magnetic field by using quasiparticle model. We find that considering CFL quark phase can significantly change the
Peng-Cheng Chu, Qian Cao, He Liu, Xiao-Hua Li, Min Ju, Xu-Hao Wu, Ying Zhou   +6 more
doaj   +1 more source

Charge symmetry violation in the parton distributions of the nucleon [PDF]

, 2000
We point out that charge symmetry violation in both the valence and sea quark distributions of the nucleon has a non-perturbative source. We calculate this non-perturbative charge symmetry violation using the meson cloud model, which has earlier been ...
A. D. Martin, A. D. Martin, A. I. Signal, A. I. Signal, A. O. Bazarko, A. W. Schreiber, A. W. Thomas, B. Q. Ma, B. Q. Ma, B. Q. Ma, C. Boros, C. Boros, C. Boros, C. Caso, C. J. Benesh, C. J. Benesh, E. Rodionov, E. Sather, F. Abe, F. Close, F. G. Cao, Fu-Guang Cao, G. A. Miller, H. Holtmann, H. L. Lai, J. J. Aubert, J. J. de Swart, J. Speth, J. T. Londergan, J. T. Londergan, J. T. Londergan, J. T. Londergan, J. T. Londergan, M. Arneodo, M. Glück, M. Glück, M. Miyama, R. E. Peierls, R. G. E. Timmermans, R. L. Jaffe, S. A. Rabinowitz, S. Kumano, W. G. Seligman, W. Melnitchouk   +43 more
core   +2 more sources

Charm quarks are more hydrodynamic than light quarks in final-state elliptic flow [PDF]

Phys. Rev. C 99, 044911 (2019), 2018
We study the charm quark elliptic flow ($v_{2}$) in heavy ion as well as small system collisions by tracking the evolution history of quarks of different flavors within a multi-phase transport model. The charm quark $v_{2}$ is studied as a function of the number of collisions the charm quark suffers with other quarks and then compared to the $v_{2}$ of
arxiv   +1 more source

Asymmetries of quark sea in nucleon

EPJ Web of Conferences, 2014
The effects of “quark sea” in determining the flavor structure of the octet baryons have been investigated in the chiral constituent quark model. The chiral constituent quark model is able to qualitatively generate the requisite amount of quark sea and ...
Dahiya Harleen
doaj   +1 more source