Update on asymmetry studies with data recorded by the surface detector up to year 2019

DOVA, M.T.; VERGARA QUISPE, I. D.; WAHLBERG, H.

Malargüe

Otro; Online Collaboration Meeting; 2020

We present an update of the asymmetry studies after almost more than 5 years of collected data. The evolution of the observable (sec θ)max for SD events with energy above 3 x 10 18 eV is compared to simulation predictions produced by different hadronic models, EPOS-LHC, QGSJETII-04 and Sibyll2.3. Data seem to indicate intermediate compositions and, in some scenarios, a transition from lighter to heavier composition as energy increases. However, the lateral discrepancy of models is still evident in terms of composition.*Plublicado como nota interna de la Colaboración Auger (GAP2020-071) el 31 de Diciembre, 2020.