Absolute normalization for uncorrelated background with the event mixing technique - Souza, F A; Carlin Filho, Nelson; Liguori Neto, Raphael; Mello, C Siqueira; Moura, Marcia Maria de; Oliveira, R A N; Del Santo, Marcelo Gimenez; Suaide, Alexandre Alarcon do Passo; Szanto, Eloisa Madeira; Szanto de Toledo, Alejandro (Nuclear Instruments & Methods in Physics Research Section A, 2009)