出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：One difficulty in comparing results of event-by-event momentum fluctuations presented by
various experimental groups is the multitude of measures used. Here we briefly show how under
assumptions of 1) small dynamical compared to statistical fluctuations and 2) sharp distribution in
the multiplicity variable these measures are simply proportional to the covariance. Although these
remarks are perhaps obvious to practitioners in the field, they seem worth reminding, as discussions
showed confusion.
