E1+M1+andS1+M1+and theirQ2dependence inγvN→Δwith relativized quark-model wave functions

1990 ◽  
Vol 41 (9) ◽  
pp. 2767-2775 ◽  
Author(s):  
Simon Capstick ◽  
Gabriel Karl
Keyword(s):  
Quark Model ◽  
Wave Functions ◽  
Model Wave

scholarly journals Be7(p,γ)B8Sfactor fromab initiono-core shell model wave functions

2006 ◽  
Vol 73 (6) ◽  
Author(s):  
P. Navrátil ◽  
C. A. Bertulani ◽  
E. Caurier
Keyword(s):  
Shell Model ◽  
Wave Functions ◽  
Core Shell ◽  
Model Wave

The analysis of the chemisorption bond from uncorrelated and correlated cluster model wave functions

1994 ◽  
Vol 100 (3) ◽  
pp. 1988-1994 ◽  
Author(s):  
J. M. Ricart ◽  
A. Clotet ◽  
F. Illas ◽  
J. Rubio
Keyword(s):  
Cluster Model ◽  
Wave Functions ◽  
Model Wave ◽  
Chemisorption Bond

Test of new shell model wave functions by means of 166 MeV alpha particle inelastic scattering

1974 ◽  
Vol 49 (5) ◽  
pp. 443-446 ◽  
Author(s):  
L. Bimbot ◽  
I. Brissaud ◽  
Y. Le Bornec ◽  
B. Tatischeff ◽  
N. Willis ◽  
...  
Keyword(s):  
Inelastic Scattering ◽  
Shell Model ◽  
Alpha Particle ◽  
Wave Functions ◽  
Model Wave

scholarly journals Masses of fully heavy tetraquarks $$QQ {\bar{Q}} {\bar{Q}}$$ in an extended relativized quark model

2020 ◽  
Vol 80 (9) ◽  
Author(s):  
Qi-Fang Lü ◽  
Dian-Yong Chen ◽  
Yu-Bing Dong
Keyword(s):  
Quark Model ◽  
Mass Spectra ◽  
Ground States ◽  
Lhcb Collaboration ◽  
Wave Functions ◽  
Recent Measurement ◽  
Heavy Quarkonium ◽  
Radial Excitation ◽  
Broad Structure ◽  
Narrow Structure

AbstractInspired by recent measurement of possible fully charmed tetraquarks in LHCb Collaboration, we investigate the mass spectra of fully heavy tetraquarks $$QQ {\bar{Q}} {\bar{Q}}$$ Q Q Q ¯ Q ¯ in an extended relativized quark model. Our estimations indicate that the broad structure around 6.4 GeV should contain one or more ground states for $$cc {\bar{c}} {\bar{c}}$$ c c c ¯ c ¯ tetraquarks, while the narrow structure near 6.9 GeV can be categorized as the first radial excitation of $$cc {\bar{c}} {\bar{c}}$$ c c c ¯ c ¯ system. Moreover, with the wave functions of the tetraquarks and mesons, the strong decays of tetraquarks into heavy quarkonium pair are qualitatively discussed, which can be further checked by the LHCb and CMS Collaborations.

scholarly journals Symmetries in subatomic multi-quark systems

2018 ◽  
Vol 27 (12) ◽  
pp. 1840003
Author(s):  
J. D. Vergados ◽  
D. Strottman
Keyword(s):  
Quantum Chromodynamics ◽  
Quark Model ◽  
Spin Symmetry ◽  
Wave Functions ◽  
Low Energy ◽  
Isospin Symmetry ◽  
Permutation Symmetry

We discus the role of Quantum Chromodynamics (QCD) in low energy phenomena involving the color-spin symmetry of the quark model. We then combine it with orbital and isospin symmetry to obtain wave functions with the proper permutation symmetry, focusing on multi-quark systems.

Gamow–Teller strength functions from scattering experiments

1987 ◽  
Vol 65 (6) ◽  
pp. 691-698 ◽  
Author(s):  
O. Häusser
Keyword(s):  
Shell Model ◽  
Cross Sections ◽  
Mean Field ◽  
Wave Functions ◽  
Structure Information ◽  
Model Wave ◽  
Spin Flip ◽  
Strength Functions ◽  
Gamow Teller ◽  
Good Agreement

We present here recent [Formula: see text] results from TRIUMF that are relevant to the determination of spin-flip isovector strength functions in nuclei. Distortion factors needed for the extraction of nuclear-structure information have been deduced from cross sections and analyzing powers in elastic scattering for several energies and targets. Nonrelativistic optical potentials obtained by folding effective nucleon (N)–nucleus interactions with nuclear densities are found to overpredict both elastic and reaction cross sections, whereas Dirac calculations that include Pauli blocking are in good agreement with the data. Spin observables (Snn and Ay) for the quasi-elastic region in 54Fe[Formula: see text] at 290 MeV provide some evidence for the reduction of the effective proton mass predicted in relativistic mean-field theories as a consequence of the attractive scalar field in the nuclear medium. The energy dependence of the effective N–nucleus interaction at small momentum transfers has been investigated using isoscalar and isovector 1+ states in 28Si as probe states. We find that the cross sections for the isovector transitions are in good agreement with predictions for the dominant Vστ part of the Franey–Love interaction. Gamow–Teller (GT) strength functions have been obtained in 24Mg and 54Fe from measurements of both cross sections and spin–flip probabilities Snn. The spin-flip cross sections σSnn are particularly useful in heavier nuclei to discriminate against a continuous background of ΔS = 0 excitations. In the (s, d) shell where full shell-model wave functions are available, the GT quenching factors [Formula: see text] are in good agreement with those from recent (p, n) and (n, p) experiments. We show that a state-by-state comparison of (p, p′) and (e, e′) results has the potential of identifying pionic current contributions in (e, e′). The GT quenching factors in 54Fe are smaller than in the (s, d) shell probably because of severely truncated shell-model wave functions, particularly those of the nuclear ground state.

On the collective model wave functions

1959 ◽  
Vol 14 (5) ◽  
pp. 1174-1176 ◽  
Author(s):  
Z. Jankovic
Keyword(s):  
Collective Model ◽  
Wave Functions ◽  
Model Wave

RADIATIVE DECAYS OF BARYONS IN A FIELD THEORETIC QUARK MODEL

1996 ◽  
Vol 11 (32) ◽  
pp. 5685-5700 ◽  
Author(s):  
A.R. PANDA ◽  
R.K. SAHOO
Keyword(s):  
Quark Model ◽  
Radiative Decay ◽  
Constituent Quark ◽  
Theoretical Calculations ◽  
Wave Functions ◽  
Radiative Decays ◽  
Quark Field ◽  
Decay Widths ◽  
Helicity Amplitudes ◽  
Decays Of Baryons

Radiative decays of baryons are considered in a field theoretic quark model of composite hadrons where the translationally invariant SU (6) hadron states are described by constituent quark field operators and harmonic oscillator wave functions. The constituent quark field operators of the model satisfying the equal time algebra are also Lorentz-boosted through a spin rotation to describe hadrons in motion. The model, like its earlier success in describing the different hadronic phenomena, in the present investigation without any free parameters, obtains the radiative decay widths and helicity amplitudes in reasonable agreement with other theoretical calculations as well as with the available experimental measurements.

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