### Inelastic proton-proton cross section measurements in CMS at $\sqrt{s}=7$ TeV.

Anna Julia Zsigmond
We present measurements of the total inelastic pp cross section at \unit{7}{\TeV} obtained with the CMS detector. Two different methods are used. In runs with low event pile-up, we exploit the large pseudorapidity coverage ($|\eta| < 5.2$) of the CMS calorimeters to obtain the cross section for events with any activity in the acceptance range. In addition, runs with high event pile-up are used by fitting a Poisson distribution with the total visible cross section...