Results 21 to 30 of about 21,261,020 (311)
UNQUENCHING THE QUARK MODEL [PDF]
Theoretical Nuclear Physics in Italy, 2007 We present the formalism for a new generation of unquenched quark models in which quark-antiquark pair effects are taken into account in an explicit form via a microscopic QCD-inspired quark-antiquark creation mechanism. No truncation in the sum over all the big tower of states is necessary since these states are automatically generated by means of ...
E. Santopinto, R. Bijker
openaire +4 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
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 ...
G. Yang 杨 +3 more
semanticscholar +1 more source
Excited bottom-charmed mesons in a nonrelativistic quark model [PDF]
Physical Review D, 2019 Using the newly measured masses of ${B}_{c}(1S)$ and ${B}_{c}(2S)$ from the CMS Collaboration and the $1S$ hyperfine splitting determined from the lattice QCD as constraints, we calculate the ${B}_{c}$ mass spectrum up to the $6S$ multiplet with a ...
Qi Li +5 more
semanticscholar +1 more source
Third family of compact stars within a nonlocal chiral quark model equation of state [PDF]
Physical Review D, 2018 We suggest a class of hybrid compact star equations of state which support the existence of a third family of compact stars composed of a core of two-flavor quark matter and a shell of hadronic matter described within a relativistic meanfield model with ...
D. Alvarez-Castillo +3 more
semanticscholar +1 more source
Valence quark distributions of light mesons in light-cone quark model
SciPost Physics Proceedings, 2022 In order to investigate the tomographical structure of light pseudoscalar mesons, particularly, pion and kaon, we study the valence quark distribution function (PDF) and the generalized parton distributions (GPDs) using light-cone quark model (LCQM).
Satvir Kaur, Narinder Kumar, Jiangshan Lan, Chandan Mondal, Harleen Dahiya
doaj +1 more source
Quark model estimate of hidden-charm pentaquark resonances [PDF]
Physical Review C, 2018 A quark model, which reproduces the ground-state mesons and baryons, i.e., the threshold energies, is applied to the $qqqc\bar c$ configurations, where $q$ is a light quark and~$c$ the charmed quark.
E. Hiyama, A. Hosaka, M. Oka, J. Richard
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
Quark mass density- and temperature- dependent model for bulk strange quark matter [PDF]
, 2002 It is shown that the quark mass density-dependent model can not be used to explain the process of the quark deconfinement phase transition because the quark confinement is permanent in this model.
Ru-Keng Su, Yun Zhang
core +2 more sources
T-odd quark-gluon-quark correlation function in the light-front quark-diquark model
SciPost Physics Proceedings, 2022 We have scrutinized the transverse momentum dependent quark-gluon-quark correlation function. We have utilized the light-front quark-diquark model to study the time-reversal-odd interaction-dependent twist-3 gluon distributions which we have obtained ...
Shubham Sharma, Narinder Kumar, Harleen Dahiya
doaj +1 more source