Results 11 to 20 of about 21,627,885 (312)
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
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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
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Tetraquarks and Pentaquarks from Quark Model Perspective
Symmetry, 2023 According to the classification of the quark model, the hadrons going beyond three-quark baryon and quark-antiquark meson pictures are called exotic hadrons. Many new hadrons have been observed since 2003, some of which exhibit exotic behaviors.
Hongxia Huang +4 more
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Coupling Hadron-Hadron Thresholds within a Chiral Quark Model Approach [PDF]
Symmetry, 2020 Heavy hadron spectroscopy was well understood within the naive quark model until the end of the past century. However, in 2003, the X(3872) was discovered, with puzzling properties difficult to understand in the simple naive quark model picture.
P. G. Ortega, D. R. Entem
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Masses of fully heavy tetraquarks $$QQ {\bar{Q}} {\bar{Q}}$$ in an extended relativized quark model [PDF]
, 2020 Inspired by recent measurement of possible fully charmed tetraquarks in LHCb Collaboration, we investigate the mass spectra of fully heavy tetraquarks $QQ \bar Q \bar Q$ in an extended relativized quark model.
Qi-Fang Lü, D. Chen, Yubing Dong
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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
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Masses of doubly heavy tetraquarks TQQ′ in a relativized quark model [PDF]
, 2020 In the present work, the mass spectra of doubly heavy tetraquarks $T_{QQ^\prime}$ are systematically investigated in a relativized quark model. The four-body systems including the Coulomb potential, confining potential, spin-spin interactions, and ...
Qi-Fang Lü, D. Chen, Yubing Dong
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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
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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.
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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
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