Standalone vertex finding in the ATLAS muon spectrometer by Aad, G, Abajyan, T, Abbott, B, Abdallah, J, Khalek, SA, Abdinov, O, Aben, R, Abi, B, Abolins, M, AbouZeid, O, Abramowicz, H, Abreu, H, Abulaitia, Y, Acharya, B, Adamczyka, L, Adams, D, Addy, T, Adelman, J, Adomeit, S, Adye, T, Aefsky, S, Agatonovic-Jovinb, T, Aguilar-Saavedra, J, Agustoni, M, Ahlen, S

A neural network clustering algorithm for the ATLAS silicon pixel detector by Aad, G, Abbott, B, Abdallah, J, Khalek, SA, Abdinov, O, Aben, R, Abi, B, Abolins, M, AbouZeid, O, Abramowicz, H, Abreu, H, Abreu, R, Abulaitia, Y, Acharya, B, Adamczyka, L, Adams, D, Adelman, J, Adomeit, S, Adye, T, Agatonovic-Jovin, T, Aguilar-Saavedra, J, Agustoni, M, Ahlen, S, Ahmadov, F, Aielli, G