Papers by Virendrasinh Kher
EPJ Web of Conferences, 2015
Investigation of the B(bq); q = u, d meson properties is carried out using variational method wit... more Investigation of the B(bq); q = u, d meson properties is carried out using variational method within phenomenological quark antiquark potential(coulomb plus power) model using the Gaussian wave function. O (1/m) correction to the potential energy term and relativistic corrections to the kinetic energy term of the hamiltonian are incorporated. Spin-orbit, spin-spin and tensor interactions are employed to obtain the mass spectra. Various other properties such as the decay constants, e1 and m1 transitions are also obtained a
EPJ Web of Conferences, 2015
Spectroscopic parameters of the D s (cs) meson are obtained using phenomenological quark antiquar... more Spectroscopic parameters of the D s (cs) meson are obtained using phenomenological quark antiquark potential(coulomb plus power) model consisting of O (1/m) correction to the potential. Within Variational scheme Gaussian wave function is employed with a hamiltonian incorporating kinematic relativistic corrections to obtain various properties such as the mass spectra, decay constants, electromagnetic transitions. The results are compared with various experimental measurement as well as other theoretical predictions.
EPJ Web of Conferences, 2015
Using the Gaussian wave function mass spectra and decay rates of bb meson are investigated in the... more Using the Gaussian wave function mass spectra and decay rates of bb meson are investigated in the framework of phenomenological quark anti-quark potential (coulomb plus power) model consisting of relativistic corrections to the kinetic energy term. The spin-spin, spin-orbit and tensor interactions are employed to obtain the pseudoscalar and vector meson masses. The decay constants f P/V are computed using the wave function at the origin. The di-gamma and di-leptonic decays of the bb meson are investigated using Van-Rayan Weisskopf formula as well as in the NRQCD formalism.
The European Physical Journal A, 2014
ABSTRACT The mass spectra and decay properties of the Bc(c¯ b) meson are investigated in the fram... more ABSTRACT The mass spectra and decay properties of the Bc(c¯ b) meson are investigated in the framework of the phenomenological quark anti-quark potential (Coulomb plus power) model consisting of relativistic corrections to the kinetic-energy term as well as relativistic corrections to the quark antiquark potential at O(1/m) using the Gaussian wave function. The spin-spin, spin-orbit and tensor interactions are employed to obtain the pseudoscalar and vector meson masses incorporating the effect of mixing. The decay constants (fP/V) with and without QCD correction are computed using the wave function at the origin. The electromagnetic transition rates are also calculated in this scheme. Our predictions for the Bc meson are in good agreement with experimental results as well as other theoretical models.
Relaxor ferroelectric compounds Sr(B1/3Nb2/3)O3, where (B Mg 2+ , Co 2+ , Cu 2+ ), synthesized by... more Relaxor ferroelectric compounds Sr(B1/3Nb2/3)O3, where (B Mg 2+ , Co 2+ , Cu 2+ ), synthesized by standard solid state reaction technique, exhibit strong correlation between structure, dielectric and transport behavior. The structure changes from highly distorted monoclinic structure in Mg 2+ and Co 2+ substituted samples to partially distorted Tetragonal structure in Cu substituted samples. In Cu 2+ based system significant Jahn-Teller distortion induced enhancements in dielectric properties have also been observed. Further, weak Jahn-Teller distortion due to unevenly occupied t2g levels in Co 2+ produces intermediate rise in ε' as well as inbuilt flexibility to conduction electron movement enhances dielectric loss (tan δ). On the other hand, strong Jahn-Teller effects in Cu 2+ substituted compound, due to unevenly occupied eg levels, results in large enhancement in ε' and frequency exponent 's' ( 500 at 300 K temperature & at 10 KHz frequency). The UV-Vis studies give the wide energy band gap semi conducting values {Eg ≥ 3.00 eV}. The improved physical properties of Sr(Cu1/3Nb2/3)O3 compound makes it suitable for energy storage devices as well as microwave device applications at wide frequency range.
The question about the conditions of formation granular solid solutions (systems based on compone... more The question about the conditions of formation granular solid solutions (systems based on components with limited or unlimited solubility) or peculiar quasigranular films (systems with mutual solubility of the components and the formation of intermetallic phases in the bulk samples). On example of the first film (Ag/Fe/S) and second (Fe/Pt/Fe/S, [Fe/Pt]8 /S) films types the temperature and concentration dependences of the resistance and thermal coefficient of resistance (TCR) were studies. It is concluded that the value of TCR will always depend on the composition (type of crystal lattices) termostabilize film material, rather than on the efficiency of electron scattering in granules or quasigranular because they will most likely realized ballistic charge transport mechanism.
In electrical engineering, load-forecasting have been tried out using most traditional forecastin... more In electrical engineering, load-forecasting have been tried out using most traditional forecasting models and artificial intelligence techniques and have become one of the major research fields. Artificial Neural Networks have lately received much attention, and a great number of papers have reported successful experiments and practical tests with them. This paper presents a new approach for short-term electrical load forecasting on Artificial Neural Network (ANN). The short-term load forecasting has been done with the help of tensor model of Functional-Link Network (FLN). An attempt has been made for forecasting short-term electric load pattern of one hour ahead. This paper also helps to concretize the knowledge how Functional-Link Network is applied for forecasting electric load. The results of the Functional-Link Network show an improved forecast capability.
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Papers by Virendrasinh Kher