Comparison of the measured atmospheric muon flux with Monte Carlo simulations for the first KM3NeT detection units
2019 July 22
The KM3NeT Collaboration has successfully deployed its first detection units in the Mediterranean Sea in December 2015 (ARCA) and September 2017 (ORCA). The sample of data collected between September 2016 and March 2017 has been used to measure the atmospheric muon flux at two different depths under the sea level: about 3.5 km with ARCA and about 2.5 km with ORCA. The atmospheric muon flux represents an abundant signal for a neutrino telescope and can be used to test the reliability of the Monte Carlo simulation chain. In this work, the measurements are compared to Monte Carlo simulations based on MUPAGE and CORSIKA codes. Measured events and simulated events are treated using the same approach, making the comparison reliable.