SW-Tutorial.md

@@ -69,7 +69,7 @@ Once all the signals quantities are stored in n-tuples, the class `/$HOME/foot_t
 
 In this class the event-selection is performed. The event-selection is based on two cut levels:
 1. Baseline RMS selection: signals with a baseline RMS greater than a threshold value are rejected
-2. &chi^2 selection
+2. χ ^2 selection
 
 ### Class methods list
 The list of the class methods are: