scholarly journals The influence of the nuclear surface diffuseness on the transition charge densities.

2019 ◽  
Vol 3 ◽  
pp. 104
Author(s):  
T. S. Kosmas ◽  
J. D. Vergados
Keyword(s):  
Sum Rules ◽  
Form Factors ◽  
Scattering Data ◽  
Nuclear Surface ◽  
Weighted Sum ◽  
Transition Form ◽  
Charge Densities ◽  
Nuclear Ground State ◽  
Surface Diffuseness ◽  
Model Approach

Proton partial occupancies of the nuclear surface orbits are used in a modified shell model approach to study isoscalar dipole transition charge densities and form factors for self-conjugate nuclei. The energy-weighted sum-rules of Harakeh-Dieperink for both the transition form factor and transition charge density are modified so as fractional occupation probabilities of the states may be used. The partial occupancies of the surface n/j-levels are determined by fitting to the experimental inelastic scattering data and compared with those found previously in the study of nuclear ground state properties

scholarly journals ANALYSIS OF THE $B_q\to D_q(D_q^*)P$ AND $B_q\to D_q(D_q^*)V$ DECAYS WITHIN THE FACTORIZATION APPROACH IN QCD

2009 ◽  
Vol 24 (31) ◽  
pp. 5845-5860 ◽  
Author(s):  
K. AZIZI ◽  
R. KHOSRAVI ◽  
F. FALAHATI
Keyword(s):  
Experimental Data ◽  
Perturbative Qcd ◽  
Sum Rules ◽  
Branching Fraction ◽  
Form Factors ◽  
Transition Form ◽  
Qcd Sum Rules ◽  
Factorization Approach ◽  
Electroweak Penguin ◽  
Decay Widths

Using the factorization approach and considering the contributions of the current–current, QCD penguin and electroweak penguin operators at the leading approximation, the decay amplitudes and decay widths of [Formula: see text] and [Formula: see text] transitions, where q = u, d, s and P and V are pseudoscalar and vector mesons, are calculated in terms of the transition form factors of the Bq→Dq and [Formula: see text]. Having computed those form factors in three-point QCD sum rules, the branching fraction for these decays are also evaluated. A comparison of our results with the predictions of the perturbative QCD as well as the existing experimental data is presented.

NUCLEAR FORM FACTORS AND NUCLEON MOMENTUM DISTRIBUTIONS IN NUCLEI

1995 ◽  
Vol 04 (02) ◽  
pp. 371-384 ◽  
Author(s):  
VLADIMIR P. GARISTOV
Keyword(s):  
Excited States ◽  
Electron Scattering ◽  
Liquid Drop ◽  
Form Factors ◽  
Simple Liquid ◽  
Nuclear Surface ◽  
Elastic Electron Scattering ◽  
Nucleon Momentum ◽  
Momentum Distributions ◽  
Surface Diffuseness

A simultaneous description of nuclear form factors and momentum distributions for ground and collective excited states is presented using a simple liquid drop model with an oscillating nuclear surface. The influence of the nuclear surface diffuseness over nuclear form factors and nucleon momentum distributions for a large region of mass number is investigated. Mean square radii of nuclei in one-phonon excited states are discussed. Quasi-elastic electron scattering y-scaling functions are presented and compared with those extracted from experimental data.

scholarly journals Light cone QCD sum rules analysis of the axial transition form factors

2008 ◽  
Vol 799 (1-4) ◽  
pp. 105-126 ◽  
Author(s):  
T.M. Aliev ◽  
K. Azizi ◽  
A. Ozpineci
Keyword(s):  
Light Cone ◽  
Sum Rules ◽  
Form Factors ◽  
Transition Form ◽  
Qcd Sum Rules

scholarly journals Light-by-light scattering sum rules constraining meson transition form factors

2012 ◽  
Vol 85 (11) ◽  
Author(s):  
Vladimir Pascalutsa ◽  
Vladyslav Pauk ◽  
Marc Vanderhaeghen
Keyword(s):  
Light Scattering ◽  
Sum Rules ◽  
Form Factors ◽  
Transition Form

scholarly journals Semileptonic Transition of Tensorχc2(1P)toDsMeson

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
J. Y. Sungu ◽  
H. Sundu ◽  
K. Azizi
Keyword(s):  
Decay Width ◽  
Sum Rules ◽  
Decay Channel ◽  
Form Factors ◽  
Gluon Condensate ◽  
Direct Search ◽  
Meson Decay ◽  
Transition Form ◽  
Qcd Sum Rules ◽  
Decay Channels

Taking into account the two-gluon condensate corrections, the transition form factors of the semileptonicχc2→Dsl-ν(l=e,μ)decay channel are calculated via three-point QCD sum rules. These form factors are used to estimate the decay width of the transition under consideration in both electron and muon channels. The obtained results can be used both in direct search for such decay channels at charm factories and in analysis of theBcmeson decay at LHC.

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