deletions | additions       diff --git a/section_Week_03_textbf_Monday__.tex b/section_Week_03_textbf_Monday__.tex  index 97816ca..07672b2 100644  --- a/section_Week_03_textbf_Monday__.tex  +++ b/section_Week_03_textbf_Monday__.tex 
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\item I spoke with Lucas concerning the b-tagging algorithm:   \begin{itemize}  \item The IP is calculated in a different way... In particular Lucas is defining IP the distance of minimum approach to the primary vertex, whereas in the Aleph paper they give this definition at page 2 (chapter 3, second par) but they use instead something more complicated, as shown in fig 1 at page 4.  \item I have to understand what the ILD formula $\sigma = 5 \oplus 10 / p \sin^{3/2} \theta \mu$m  of the resolution takes into account \item He is saying that for the moment, he is considering the multiple scattering trough the beampipe and the finite resolution of the algorithm that finds the minimum. The resolution of the detector is taken into account because you calculate the resolution with the smeared tracks (smeared by papas, but you don't do this with the leptons...whereas the impact parameter of the lepton could be useful (maybe))  \item He calculates the b-tag with the ATLAS and CMS algorithms, that are more complicated than that used by ALEPH...   \end{itemize}