Results 1 to 10 of about 38,607,398 (267)
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 Lu, Dian-Yong Chen, Yubing Dong
semanticscholar +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
Investigating Fully Strange Tetraquark System with Positive Parity in a Chiral Quark Model
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 +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
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
Triply heavy baryons in the constituent quark model [PDF]
Chinese Physics C, High Energy Physics & Nuclear Physics, 2019 The constituent quark model is used to compute the ground and excited state masses of QQQbaryons containing either c or bquarks. The quark model parameters previously used to describe the properties of charmonium and bottomonium states were used in this ...
Gang Yang +3 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 +1 more source
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
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Compact ssscc¯ pentaquark states predicted by a quark model [PDF]
Physics Letters B, 2019 Several compact s s s c c ¯ pentaquark resonances are predicted in a potential quark model. The Hamiltonian is the best available one, which reproduces the masses of the low-lying charmed and strange hadrons well.
Qi Meng +6 more
semanticscholar +1 more source
Quark: Controllable Text Generation with Reinforced Unlearning [PDF]
Neural Information Processing Systems, 2022 Large-scale language models often learn behaviors that are misaligned with user expectations. Generated text may contain offensive or toxic language, contain significant repetition, or be of a different sentiment than desired by the user. We consider the
Ximing Lu +7 more
semanticscholar +1 more source