RADIATIVE M1-TRANSITIONS OF HEAVY MESONS IN LIGHT-FRONT QUARK MODEL

2008 ◽  
Vol 23 (21) ◽  
pp. 3259-3262
Author(s):  
HO-MEOYNG CHOI
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Quark Model ◽  
Radiative Decay ◽  
Light Front ◽  
Effective Hamiltonian ◽  
Model Calculations ◽  
Heavy Mesons ◽  
Decay Widths ◽  
Good Agreement

We present the magnetic dipole(M1) transitions V → Pγ of various heavy-flavored mesons such as [Formula: see text] and [Formula: see text] using the light-front quark model constrained by the variational principle for the QCD-motivated effective Hamiltonian. Our numerical results for the radiative decay widths are in good agreement with the available experimental data as well as other theoretical model calculations.

RADIATIVE DECAY OF LIGHT AND HEAVY MESONS IN AN INDEPENDENT QUARK MODEL

2001 ◽  
Vol 16 (27) ◽  
pp. 1785-1794 ◽  
Author(s):  
HAKAN ÇIFTCI ◽  
HÜSEYIN KORU
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Ground State ◽  
Radiative Decay ◽  
Potential Model ◽  
Magnetic Moments ◽  
Heavy Mesons ◽  
Decay Widths ◽  
Relativistic Potential

In this paper we have calculated transition magnetic moments and radiative decay widths of light and heavy mesons using a relativistic potential model of independent quarks with its parameters determined from a fit to the mass of ground state mesons in the strange, charm and bottom flavor sectors. The results are in agreement with the experimental data.

Radiative decay of unbound levels in 14N

1985 ◽  
Vol 63 (9) ◽  
pp. 1141-1147 ◽  
Author(s):  
C. Pruneau ◽  
M. B. Chatterjee ◽  
C. Rangacharyulu ◽  
C. St-Pierre
Keyword(s):  
Shell Model ◽  
Radiative Decay ◽  
Branching Ratios ◽  
Gamma Transition ◽  
Model Calculations ◽  
Mixing Ratios ◽  
Decay Properties ◽  
Decay Widths ◽  
Gamma Decay ◽  
Good Agreement

The gamma decay properties of 10.43-, 10.1-, 9.7-, 9.51-, and 8.91-MeV levels are studied by the 13C(p, γ) reaction. The natural widths, gamma decay widths, branching ratios, and multipole mixing ratios are determined. The gamma branching ratios are generally in good agreement with earlier works. However, it is found that the previous (p, γ) measurements overestimated the gamma transition strengths. The results are compared with shell model calculations. Also, a phenomenological description is attempted for a few 14N levels.

scholarly journals MESON DECAY IN AN INDEPENDENT QUARK MODEL

2000 ◽  
Vol 09 (05) ◽  
pp. 407-415 ◽  
Author(s):  
HAKAN CİFTCİ ◽  
HÜSEYIN KORU
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Weak Decay ◽  
Leptonic Decay ◽  
Meson Decay ◽  
Decay Constants ◽  
Pseudoscalar Mesons ◽  
Light Vector ◽  
Decay Widths ◽  
Good Agreement

Leptonic decay widths and leptonic decay constants of light vector mesons and weak leptonic decay widths and weak decay constants of light and heavy pseudoscalar mesons have been studied in a field-theoretic framework based on the independent quark model with a scalar-vector power-law potential. The results are in very good agreement with the experimental data.

The structure of the Cincinnati arch as determined by short period Rayleigh waves

1969 ◽  
Vol 59 (1) ◽  
pp. 399-407
Author(s):  
Robert B. Herrmann
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Layer Thickness ◽  
Rayleigh Waves ◽  
Layer Model ◽  
Depth Data ◽  
Short Period ◽  
Best Fitting ◽  
Good Agreement

Abstract The propagation of Rayleigh waves with periods of 0.4 to 2.0 seconds across the Cincinnati arch is investigated. The region of investigation includes southern Indiana and Ohio and northern Kentucky. The experimental data for all paths are fitted by a three-layer model of varying layer thickness but of fixed velocity in each layer. The resulting inferred structural picture is in good agreement with the known basement trends of the region. The velocities of the best fitting theoretical model agree well with velocity-depth data from a well in southern Indiana.

Determination of hyperon properties through the variational method considering the hyperfine interaction

2019 ◽  
Vol 28 (10) ◽  
pp. 1950087 ◽  
Author(s):  
S. M. Moosavi Nejad ◽  
A. Armat
Keyword(s):  
Experimental Data ◽  
Wave Function ◽  
Ground State ◽  
Radiative Decay ◽  
Magnetic Moments ◽  
Wave Functions ◽  
Decay Widths ◽  
Free Parameters ◽  
Theoretical Results

Performing a fit procedure on the hyperon masses, we first determine the free parameters in the Cornell-like hypercentral potential between the constituent quarks of hyperons in their ground state. To this end, using the variational principle, we apply the hyperspherical Hamiltonian including the Cornell-like hypercentral potential and the perturbation potentials due to the spin–spin, spin–isospin and isospin–isospin interactions between constituent quarks. In the following, we compute the hyperon magnetic moments as well as radiative decay widths of spin-3/2 hyperons using the spin-flavor wave function of hyperons. Our analysis shows acceptable consistencies between theoretical results and available experimental data. This leads to reliable wave functions for hyperons at their ground state.

Theoretical Model of the Spanwise Mixing Caused by Periodic Incoming Wakes

1994 ◽  
Author(s):  
K. Imanari
Keyword(s):  
Experimental Data ◽  
Theoretical Model ◽  
Turbulent Diffusion ◽  
Axial Flow ◽  
Single Stage ◽  
Mixing Coefficients ◽  
Predicted Values ◽  
Good Agreement ◽  
Axial Flow Compressors

A theoretical model is proposed for the spanwise mixing caused by periodic incoming wakes in the context of turbulent diffusion in axial-flow compressors prior to repeating-stage conditions. The model was used to predict the spanwise mixing coefficients across a stator of a single-stage compressor without IGVs. The correctness of the theory was demonstrated by the results that the predicted values were in good agreement with the associated experimental data.

scholarly journals Central and peripheral hadron–nucleus collisions in the Additive Quark Model

2019 ◽  
Vol 34 (06) ◽  
pp. 1950048
Author(s):  
G. H. Arakelyan ◽  
Yu. M. Shabelski ◽  
A. G. Shuvaev
Keyword(s):  
Experimental Data ◽  
Quark Model ◽  
Constituent Quark ◽  
High Energies ◽  
Central Collisions ◽  
Energy Formula ◽  
Incident Nucleon ◽  
Good Agreement

Peripheral nucleon–nucleus collisions occur at high energies mainly through the interaction with one constituent quark from the incident nucleon. The central collisions should involve all three constituent quarks and each of them can interact several times. We calculate the average number of quark–nucleus interactions for both the cases in good agreement with the experimental data on [Formula: see text]-meson, [Formula: see text] and all charged secondaries productions in [Formula: see text] collisions at LHC energy [Formula: see text] TeV.

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.

Simulating Radio Element Release and Water-Rock Interactions During Dissolution of Borosilicate Glass

1997 ◽  
Vol 506 ◽  
Author(s):  
A V Chambers ◽  
T G Heath ◽  
C M Linklater ◽  
A M Thompson ◽  
R M Wiggin
Keyword(s):  
Experimental Data ◽  
Borosilicate Glass ◽  
Glass Surface ◽  
Major Elements ◽  
Reaction Products ◽  
Exchange Reactions ◽  
Model Calculations ◽  
Dissolution Behaviour ◽  
Uranium Plutonium ◽  
Good Agreement

ABSTRACTA model has been developed that can simulate in some detail the chemistry of the glass dissolution process. To test the performance of the model, calculations were carried out to predict the dissolution behaviour of a commercial borosilicate glass. The model could reproduce accurately the behaviour of major elements released from the glass, although in the case of silica, ‘sorption’ at the glass surface was required in order to achieve good agreement with experimental data. Secondary reaction products sepiolite, montmorillonite, analcime and goethite were predicted to form. Further calculations were carried out to simulate the release of radioelements (caesium, strontium, uranium, plutonium) from within the dissolving glass. The precipitation of insoluble solids was the only mechanism included in the model to retain the radioelements at the glass surface. For plutonium, there was good agreement between model predictions and available experimental data. For caesium and strontium, the model underestimated the amount of retention at the glass surface and additional retention mechanisms, such as coprecipitation or ion exchange reactions involving newly-formed clay-type minerals at the glass surface must be invoked to explain experimental observation.

scholarly journals SYMMETRIES AND SYSTEMATICS OF DOUBLY HEAVY HADRONS

2012 ◽  
Vol 27 (08) ◽  
pp. 1250039 ◽  
Author(s):  
B. EAKINS ◽  
W. ROBERTS
Keyword(s):  
Experimental Data ◽  
Excitation Energy ◽  
Heavy Quark ◽  
Quark Model ◽  
Strange Quark ◽  
Heavy Meson ◽  
Heavy Quarks ◽  
Heavy Mesons ◽  
Heavy Baryons

We discuss the extension of the superflavor symmetry of doubly heavy baryons to states which contain an excited heavy diquark and we examine some of the consequences of this symmetry for the spectra of doubly heavy baryons and heavy mesons. We explore the ramifications of a proposed symmetry that relates heavy diquarks to doubly heavy mesons. We present a method for determining how the excitation energy of a system containing two heavy quarks will scale as one changes the strength of the interactions and the reduced mass of the system. We use this to derive consequences of the heavy diquark-doubly heavy meson symmetry. We compare these consequences to the results of a quark model as well as the experimental data for doubly and singly heavy mesons. We also discuss the possibility of treating the strange quark as a heavy quark and apply the ideas developed here to strange hadrons.

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