This is a free parameter of the problem. Ask the person who told you to plot this distribution.
Anyway, are you sure that what this macro is plotting is dN/dpt and not already dSigma/dpt?
In fact, pythia or any other generator, will calculate a cross section and THEN turn it into a number of...
no, that's a different business: this observation that you mention, only hinted at the possibility of oscillation (and since oscillation is possible only with different masses, this hinted at the possibility that at least one of the neutrino types is not massless). But I think that at the time...
dilekulas, so your question is "how to go from the number of events to the cross section"?
You don't need to look for macros for that, just look in your textbook (or in wikipedia) what is the relation between cross section and luminosity!
Anyway I will help you, since I remember by hearth: if...
They have different interactions with the charged leptons.
Lederman and Steinberger won the nobel prize for having demonstrated experimentally that the neutrinos created together with a muon (in pion and kaon decays) are not able to interact with electrons (while it was already well know that...
Probably they label it e/mu because it is consistent both with the electron hypothesis (since it leaves some energy in the electromagnetic calorimeter, see the purple block) and with the muon hypothesis (since it has hits in the muon chambers).
My 2 cents: it is a muon which by chance is...
Both the angles and the lengths of the sides are experimentally accessible.
But I'm not an expert in B or K physics, so trust more the Primer than me... :)
Oh, that's a different story.
The property of "unitarity" for a matrix implies that its columns, when treated as vectors, behave as a hortonormal set. And the same for its rows.
Hortonormality, for a set of complex vectors \vector{v_i}, means that \vector{v_i^*}\vector{v_i}= 1 and...
Yes!
I'll try to explain why your question doesn't make so much sense :)
When you consider an elementary interaction involving a quark q, another quark q', and a W, in the calculation of the amplitude you will have to multiply for g (the weak interaction coupling, which is *universal*, i.e...
> One proposed model claims it has to do with the bottom and top quark doublet. According to Weinberg Vol. II because of the appearance of the third generation of quarks it is no longer possible to make the CKM matrix completely real and somehow the fact that the CKM matrix is no longer real can...
> Are the coefficients of the CKM matrix the same for all interactions?
Yes.
> If yes, why does the CP violation occur only in very specific interactions and not in all of then?
The CP-violating effects are visible only in processes (and for physical observables) where the complex...