Recent content by florian

hi again yes your right the formula is not exactly what I want... References: I found the formula in the book "Electron-Positron Physics at the Z" from several authors (M.G.Green, S.L.Lloyd, P.N.Ratoff and D.R.Ward) the derivation of the equation is in "QCD and Collider Physics" Cambridge...

Hi Thanks for all replies... I found something in a book... it concerns to the O(\alpha_s) terms, means the one gluon radiations... The evaluation of these Feynman diagrams leads to the following form for the three-parton cross-section \begin{equation} \frac{d^2\sigma}{dx_1dx_2} =...

Hi I am searching for the equation for the radiation probability of a gluon from a quark. I need this for an explanation of the jet structure after a Z decay. Because I heard that hard gluons are radiated with small angles to the quark. This means the energy is focused in the directions of the...

yes i think so too :-)... and which are the conditions? because it is still an ideal gas and not real: 1. I guess no interaction is a condition 2. probably the particles have to be massless... but my problem is the following: In the books they use this approximation to describe a QGP (quark...

I found something like p = \epsilon/3 \epsilon = \pi^2gT^4/30 ... is this compatible to your equation? ... is the Stefan-Boltzmann gas the normal ideal gas, or is there an additional condition? ... what is with the mass of the particles? is there any condition to them? thanks for the...

Does anybody know the conditions of a ideal Stefan Boltzmann gas? And the EoS? thanks a lot florian