Results 1 to 10 of about 17,152 (246)
Investigating Fully Strange Tetraquark System with Positive Parity in a Chiral Quark Model [PDF]
Universe, 2023 Motivated by the intriguing discovery of X(6900) by the LHCb collaboration, we undertake a comprehensive study of the ss¯ss¯ tetraquark system with positive parity, employing the Gaussian expansion within the chiral quark model method.
Yue Tan +3 more
doaj +2 more sources
Nonperturbative partonic quasidistributions of the pion from chiral quark models
Physics Letters B, 2017 We evaluate nonperturbatively the quark quasidistribution amplitude and the valence quark quasidistribution function of the pion in the framework of chiral quark models, namely the Nambu–Jona-Lasinio model and the Spectral Quark Model.
Wojciech Broniowski +1 more
doaj +2 more sources
Quark Structure of the X (4500), X (4700) and χc(4P,5P) States
Frontiers in Physics, 2021 We study some of the main properties (masses and open-flavor strong decay widths) of 4P and 5P charmonia. While there are two candidates for the χc0(4P,5P) states, the X(4500) and X(4700), the properties of the other members of the χc(4P,5P) multiplets ...
J. Ferretti, E. Santopinto
doaj +1 more source
Study of Hidden-Charm and Hidden-Bottom Pentaquark Resonances in the Quark Model
Universe, 2023 Inspired by the LHCb observation of hidden-charm pentaquarks, i.e., Pc(4312), Pc(4440), and Pc(4457) in the J/ψp invariant mass spectrum, a calculation of the J/ψp scattering cross-section was performed using the quark-delocalization color screening ...
Xinmei Zhu +4 more
doaj +1 more source
Zeitschrift für Physik C Particles and Fields, 1995 41 pages, 11 figures, preprint ROM2F 93 ...
Pallante, E., Petronzio, R.
openaire +2 more sources
The Genuine Resonance of Full-Charm Tetraquarks
Universe, 2021 In this work, the genuine resonance states of full-charm tetraquark systems with quantum numbers JPC=0++,1+−,2++ are searched in a nonrelativistic chiral quark model with the help of the Gaussian Expansion Method.
Xiaoyun Chen
doaj +1 more source
Covariant and heavy quark symmetric quark models [PDF]
Physical Review D, 1994 There exist relativistic quark models (potential or MIT-bag) which satisfy the heavy quark symmetry (HQS) relations among meson decay constants and form factors. Covariant construction of the momentum eigenstates, developed here, can correct for spurious center-of-mass motion contributions.Proton form factor and M1 transitions in quarkonia are ...
Tadić, D., Žganec, S.
openaire +3 more sources
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 +1 more source
Quark confinement in a constituent quark model [PDF]
Nuclear Physics A, 1996 40 pages, 14 figures, complete uu-file avaiable on ...
Langfeld, Kurt, Rho, Mannque
openaire +2 more sources
Quark Models of the Nucleon–Nucleon Interaction
Frontiers in Physics, 2020 The present paper aims to provide a review of the relevance of quark degrees of freedom in the description of the nucleon-nucleon and, in general, of the baryon-baryon interaction.
Francisco Fernández +4 more
doaj +1 more source