scholarly journals Limits on tensor coupling from neutronβdecay

2013 ◽  
Vol 88 (4) ◽  
Author(s):  
R. W. Pattie ◽  
K. P. Hickerson ◽  
A. R. Young
Keyword(s):  
Tensor Coupling

scholarly journals Eigen Spectra for q-Deformed Hyperbolic Scarf Potential Including a Coulomb-like Tensor Interaction

2011 ◽  
Vol 3 (2) ◽  
pp. 239-247 ◽  
Author(s):  
M. Eshghi ◽  
H. Mehraban
Keyword(s):  
Dirac Equation ◽  
Spin Symmetry ◽  
Tensor Interaction ◽  
Tensor Coupling ◽  
Energy Eigenvalues ◽  
Scarf Potential ◽  
Tensor Potential ◽  
Uvarov Method

We study the Dirac equation for the q-deformed hyperbolic Scarf potential including a coulomb-like tensor potential under the spin symmetry. The parametric generalization of the Nikiforov-Uvarov method is used to obtain the energy eigenvalues equation and the unnormalized wave functins.Keywords: Dirac equation; q-deformed hyperbolic Scarf; Spin symmetry; Tensor coupling.© 2011 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi:10.3329/jsr.v3i2.7295                 J. Sci. Res. 3 (2), 239-247 (2011)

scholarly journals Relativistic New Yukawa-Like Potential and Tensor Coupling

2012 ◽  
Vol 53 (3-4) ◽  
pp. 487-498 ◽  
Author(s):  
Sameer M. Ikhdair ◽  
Majid Hamzavi
Keyword(s):  
Tensor Coupling

TENSOR EFFECTS IN PYGMY DIPOLE EXCITATION

2011 ◽  
Vol 20 (10) ◽  
pp. 2143-2151 ◽  
Author(s):  
ESRA YUKSEL ◽  
KUTSAL BOZKURT
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Nucleon Nucleon ◽  
Coupling Constants ◽  
Phase Approximation ◽  
Skyrme Interaction ◽  
Quasiparticle Random Phase Approximation ◽  
Tensor Coupling ◽  
Hartree Fock ◽  
Dipole Excitation

We investigate tensor effects in pygmy dipole excitations for the case of neutron-rich nuclei 68 Ni and 124 Sn using effective nucleon–nucleon Skyrme interaction. We use the Hartree–Fock–Bogoliubov (HFB) theory and employ the quasiparticle random phase approximation (QRPA). We calculate and compare the PDR and also GDR strength in the PDR–GDR energy region for QRPA calculations with and without tensor correlations. The most obvious results for the dipole excitations calculations are strongly dependent on the tensor terms. We see that the tensor correlations are more active at around 14–20 MeV , especially for the neutron-rich nuclei 68 Ni . We also compare the PDR calculations with their experimental results for the different proton–neutron tensor coupling constants.

scholarly journals BAYESIAN MODEL SELECTION FOR ELECTROMAGNETIC KAON PRODUCTION ON THE NUCLEON

2011 ◽  
Vol 26 (03n04) ◽  
pp. 642-644 ◽  
Author(s):  
L. DE CRUZ ◽  
D. G. IRELAND ◽  
P. VANCRAEYVELD ◽  
J. RYCKEBUSCH
Keyword(s):  
Bayesian Model ◽  
Coupling Constant ◽  
Regge Model ◽  
Kaon Production ◽  
Minimization Method ◽  
Vector Coupling ◽  
Tensor Coupling ◽  
Positive Vector ◽  
Bayesian Evidence ◽  
Selection For

We present the results of a Bayesian analysis of a Regge model for K+Λ photoproduction. The model is based on the exchange of K+(494) and K*+(892) trajectories in the t-channel. For different prior widths, we find decisive Bayesian evidence (Δ ln Ƶ ≈ 24) for a K+Λ photoproduction Regge model with a positive vector coupling and a negative tensor coupling constant for the K*+(892) trajectory, and a rotating phase factor for both trajectories. Using the χ2 minimization method, one could not draw this conclusion from the same dataset.

Supersymmetry and tensor coupling in

1992 ◽  
Vol 280 (3-4) ◽  
pp. 238-244 ◽  
Author(s):  
V.M. Belyaev ◽  
Ian I. Kogan
Keyword(s):  
Tensor Coupling

EXOTIC NUCLEAR STRUCTURES WITH ISOSPIN DEPENDENT INTERACTIONS IN RELATIVISTIC MEAN-FIELD MODELS

2006 ◽  
Vol 15 (07) ◽  
pp. 1487-1494
Author(s):  
W. Z. JIANG
Keyword(s):  
Mean Field ◽  
Exotic Nuclei ◽  
Heavy Nuclei ◽  
Charge Density Distribution ◽  
Tensor Coupling ◽  
Relativistic Mean Field ◽  
Mean Field Models ◽  
Coupling Terms ◽  
Nuclear Structures

The properties of light exotic nuclei far off β-stability are studied using relativistic mean field (RMF) models considering the nonlinear isoscalar-isovector coupling terms that modify the density dependence of the symmetry energy. The ρNN tensor coupling is included. The neutron thickness of some light exotic nuclei near neutron drip lines is as uncertain as that of heavy nuclei. The uncertainty of these light exotic nuclei is enhanced by the inclusion of the ρNN tensor coupling subject to the 2s1/2 occupation of the out-layer neutrons. The charge density distribution of exotic nuclei on both sides of drip lines are considerably modified by the isospin dependent interactions. The role of multi-Λ hypernuclei in extending the drip lines are discussed.

scholarly journals Relativistic symmetries of Schioberg and general Manning-Rosen potentials and the effects of tensor coupling

2013 ◽  
Vol 37 (1) ◽  
pp. 1-17
Author(s):  
A. N. Ikot ◽  
E. Maghsoodi ◽  
C. N. Isonguyo ◽  
S. Zarrinkamar ◽  
H. Hassanabadi
Keyword(s):  
Dirac Equation ◽  
Potential Energy ◽  
Closed Form ◽  
Bound State ◽  
Tensor Interaction ◽  
Numerical Results ◽  
Wave Functions ◽  
Tensor Coupling ◽  
Energy Equations ◽  
Rosen Potential

Abstract In this paper we solve the Dirac equation with Schioberg and general Manning- Rosen potentials including the Coulomb-like tensor interaction. The approximate analytical bound state solutions of the Dirac equation with the Schioberg and Manning-Rosen potential, energy equations and the corresponding unnormalized wave functions are obtained in a closed form using SUSYQM. We have also reported the numerical results to show the effect of the tensor interaction.

scholarly journals THE DIELECTRIC FUNCTION EXCITED BY ρNN TENSOR COUPLING IN NUCLEAR MATTER

2004 ◽  
Vol 19 (11) ◽  
pp. 855-862 ◽  
Author(s):  
HUI LIU ◽  
JIA-RONG LI
Keyword(s):  
Field Theory ◽  
Temperature Field ◽  
Nuclear Matter ◽  
Dielectric Function ◽  
The Other ◽  
Induced Current ◽  
Vector Coupling ◽  
Finite Temperature Field Theory ◽  
Tensor Coupling ◽  
Current Mechanism

The dielectric function of nuclear matter excited by ρNN tensor coupling has been studied in the framework of finite temperature field theory. The induced current mechanism has been introduced to explain the three extrema on the dielectric function curve, of which one is in the space-like region and the other two are in the time-like region. It points out that the tensor coupling contributes much more large amplitude than the vector coupling and plays a more important role on the time-like region compared with its effect on the space-like region.

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