quark model
Strangeness magnetic form factor of the proton in the extended chiral quark model
... chiral quark-soliton model [ 13 ], Skyrme model [ 14 ], and constituent quark models [ 15 – 17 ...cloud model [ 18 , 19 ], chiral quark model [ 20 , 21 ], and unquenched ...
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Comparative analysis of large Nc QCD and quark model approaches to baryons
... 3. Comparison of both approaches 3.1. Light baryons The coefficients c i appearing in the 1/N c mass operator can be obtained from a fit to experimental data and compared with the quark model results. The ...
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Quark model: recent issues
... the quark model and the 1/N c expansion approach The QM still remains the basic tool in hadron ...constituent quark model is based on a given Hamiltonian which contains a number of dynamical ...
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Quark model analysis of the Sivers function
... constituent quark model (CQM), i.e. a model described in terms of constituent quarks and whose properties have been fixed from hadronic observ- ...the model calculations [ 32 , 33 ] and using ...
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Duality in the non-relativistic harmonic oscillator quark model in the Shifman-Voloshin limit : a pedagogical example
... 2 Model • The model for hadrons is the non relativistic harmonic oscillator quark model (the motion of quarks both internal and due to overall hadron are both treated non relativistically), ...
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Study of multiquarks systems in a chiral quark model
... chiral quark model of Glozman et al. 18,19 . This model is somehow quite “extreme” because it includes meson-exchange forces between quarks and entirely neglects the chromomagnetic ...
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Baryonic mass formula in large N-c QCD versus quark model
... intrinsic symmetry. Thus the two approaches have formally the same symmetry in common which does not imply common dynamical assumptions. The only common feature is that the excited states are stable in a first ...
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Pion decay of baryons in a flux-tube quark model
... with two free parameters and much better than those ob- tained from the one-parameter PSE model. Therefore, it seems important to treat the pion as a finite-size particle, described on a[r] ...
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Strong decays of hadrons in a semirelativistic quark model
... In Table I we display our numerical results for I ~ cal- culated according to Eq. 1) for the 18 resonances whose photodecay has been studied in Ref. All but two are four- and three-star [r] ...
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Finite Nuclei in the Quark-Meson Coupling Model
... effective quark-meson coupling (QMC) energy density functional (EDF), derived from a quark model of hadron structure, to study a broad range of ground state properties of even- even nuclei across the ...
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Dynamics of pentaquarks in constituent quark models: Recent developments
... CONSTITUENT QUARK MODELS Constituent quark models describe a large variety of observables in baryon spec- ...constituent quark model Hamiltonian has a spin-independent part (free mass term + ...
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Analyzing the Boer-Mulders function within different quark models
... 2 Dipartimento di Fisica, Universita` degli Studi di Perugia and INFN, Sezione di Perugia, via A. Pascoli 06100 Perugia, Italy (Received 8 September 2009; published 27 October 2009) A general formalism for the evaluation ...
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Quark Wigner Distributions and Orbital Angular Momentum
... constituent quark model and the light-cone version of the chiral quark-soliton model are very similar, and al- lowed us to sketch some general features about the behav- ior of the quarks in ...
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Pseudoscalar vertex, Goldstone boson and quark masses on the lattice
... on quark masses and on the quark propagator, and for providing us with their data on the ...the quark model group at Orsay for their constant and friendly help and discussions, as well as ...
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Measurement of the polarization of strange quark in the nucleon and determination of quark fragmentation functions into hadrons
... Deep inelastic scattering has been first realized at the Stanford Linear Accelerator Center (SLAC) in the 1960s, resulting in the first experimental evidence that the proton has a substructure of point-like particles ...
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T-odd Transverse Momentum Distributions in Quark Models
... in quark models has been presented in ...the quark model we have used contain gluonic degrees of freedom, therefore the Final State Interactions are consistently introduced through a One Gluon ...
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Forward-backward asymmetry in top quark-antiquark production
... Since the regularization suppresses the badly-measured components of the data, it can also suppress part of the t¯ t production asymmetry. We calibrate the unfolding using ensembles of pseudo-datasets (PDSs). Each PDS is ...
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Quark Lagrangian diagonalization versus non-diagonal kinetic terms
... of quark fields would be ...gets quark fields with definite diagonal masses and non-diagonal charged currents described by a unitary CKM ...These quark fields are expressed in terms of the initial ...
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Test of lepton universality in beauty-quark decays
... nonresonant candidates in each of the different trigger categories and data-taking periods are fitted simultaneously. The mass-shape parameters are derived from the calibrated simulation. The four signal modes are ...
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Uraltsev Sum Rule in Bakamjian-Thomas Quark Models
... Thomas quark models are in order ...active quark (the simplest Ansatz), these matrix elements are not covariant in general, although a main result of the formalism is that they are covariant in the heavy ...
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