This thesis provides a relativistic description of electron-positron scattering and pair
annihilation in quantum electrodynamics. By evaluating the modulus square of the invariant
matrix elements, the differential ...
This study is to present an electroweak description of neutrino-induced electron-positron pair
production in the presence of a strong background magnetic field. The determination of the
scattering matrix, scattering ...
Getachew Ayalew Liben; Elias Mengesha (PhD(Haramaya University, 2023-02)
In this paper we employed the BSE methed to study the leptonic decays of -meson. By using lowest-order Feynman diagrams, detailed derivations of the invariant matrix element were made. The Feynman rules and trace algebra ...
Isak Sufiyan; ELIAS MENGESHA (PhD)(Haramaya University, 2023-06)
The main purpose of this study is to provide the quantum description for the vertex correction and soft photon emission contributions to the radiative corrections of the scattering of electron by coulomb potential. Using ...
Tofik Yusuf Ahmed; Elias Mengesha (PhD)(Haramaya University, 2023-04)
The main purpose of this study is to provide the quantum description for the Vacuum polarization contribution to the radiative correction of the scattering of electron by coulomb potential. Using Feynman rules of quantum ...
In this study, the grand canonical partition function has been employed to estimate the chemical potential, internal energy, equation of state, specific heat and entropy of the non-interacting Bose gas in low temperature ...
Computer based diagnosis of approach enables to detect abnormalities of red blood cells.
Automated computer-based diagnosis is believed to be fast and accurate if the system is
properly developed and verified. The ...
Postoperative complication may be defined as negative outcome as perceived either by the surgeon or by the patients. It confers an increased risk of reoperation, prolonged length of stay, decline in disposition and increased ...
The main purpose of this study is to discuss the properties of the solutions of the Dirac equation and calculate the Dirac propagator in the presence of a uniform background magnetic field. In particular the focus of the ...
In this thesis, the covariant form of Dirac equation has been modified for a relativistic muon by incorporating the uniform background electric field through the principle of minimal coupling. The Electromagnetic (EM) field ...
this thesis, the electroweak description of neutrino-induced neutral weak transition between Sigma and Lambda hyperons is present. The norm-squared invariant element has been manipulated into a contraction between leptonic ...
Wheat is one of the most important food sources in the world. Classification of wheat grains is essential for controlling the quality of wheat for flour industry, wheat traders and wheat researchers. The main focus of this ...
In ideal Fermions system, at high temperature limit, quantum effects are small but when the temperature is lowered, quantum effects start becoming important. The main purpose of this study was to formulate thermodynamic ...
This thesis presented how one found the energy and the wave function formalism of helium atom, for the lower energy level of general space dependent potential. Using perturbation and Varitional approximation method.The ...
lambebo, Getachew; bekele, Gashaw Major Advisor (PhD)(Haramaya university, 2019-03)
In this thesis, the main purpose was provided the electroweak description of elastic neutral current (NC) neutrino-nucleon scattering in the low energy region. The relativistic formalism has allowed us allows treating the ...