Recent content by Monaliza Smile

Ok, I'm asking how to do so, or please mention a good reference for ..

Hi, I read in a QFT book that the free massive vector boson Lagrangian is ## \mathcal{L}_W = - \frac{1}{4} (\partial_\mu W^\dagger_\nu - \partial_\nu W_\mu^\dagger ) (\partial^\mu W^\nu - \partial^\nu W^\mu ) + M^2_W W^\dagger_\mu W^\mu ## gives the propagator in momentum space by: ## i...

I knew the answer ## \bar{\psi}_L \gamma^\mu \psi_L ## which equals ## \bar{\psi} \gamma^\mu \psi_L ##

Hi, It's known that ## \bar{\psi}_L \psi_L = \bar{\psi} \psi_L## I tried to work this out but i do not reach that Here what I do : since ## \bar{\psi} = \psi^\dagger \gamma^0##, and ## \gamma_5 \gamma_0 = - \gamma_0 \gamma_5 ## then ## \bar{\psi}_L \psi_L = \frac{1}{4} (1-\gamma_5 )...

Hi, I have a function defined by: F[x_,y_,z_]:=3 x+y-2Y[z] where Y[z_]:=3/z I'd like to run Do loop to calculate the value of this function for specific regions of x,y,z. I can use: Do[F[x,y,z],{x,1,2,1},{y,-2,-1,1},{z,3,5,1}], But I have two questions here: First: How to save the output...

Hi all, I'm little confused about the maximal appropriate value for the SM Higgs quartic coupling and the Higgs mass = 125 GeV. that as ## \lambda =m_h^2 / 2 v^2 \simeq 0.1 ## for ##v = 246 ~ GeV##. But according to the perturbation theory, ##\lambda ## enters into higher order corrections as...

Hi all, Do anyone know how from the mass eigenvalues: ## M_{H,h}^2 = \frac{1}{2} [\lambda_1 v_1^2 + \lambda_2 v_2^2 \mp \sqrt{(\lambda_1 v_1^2 - \lambda_2 v_2^2)^2 + 4 \lambda^2 v_1^2 v_2^2} ], ## and ## \tan 2\alpha =\frac{2 \lambda v_1 v_2}{\lambda_1 v_1^2 - \lambda_2 v_2^2} ## To get the...