t30-t10 as a mass sensitive parameter: update

F. A. GOMEZ ALBARRACIN

Malargüe

Encuentro; Pierre Auger Collaboration Meeting; 2009

Colaboración Pierre Auger

(presentación oral) In this talk, we continue working on the t30-t10 as a mass sensitive paramerter measured with the surface detector (SD). We construct the Delta parameter, compare it with the well established mass-sensitive Xmax and calculate a correlation between them. We then apply this correlation to the whole SD data set, obtaining an "SD elongation rate".We also introduce a way to study the fluctuations of the parameter  for mass composition, and compare it with simulations.