Complex sentence: Aragats in order to search for the third (proton) component of cosmic rays, found so called narrow showers in cosmic rays, established the first evidence of the existence in cosmic rays of the particles with masses between that of muon and proton.
Split into simpler sentences: Aragats in order to search for the third (proton) component of cosmic rays. They found so called narrow showers in cosmic rays and established the first evidence of the existence in cosmic rays of the particles with masses between that of a muon and proton.