Particle Flow reconstruction in the CMS Level-1 Trigger For The HL-LHC

Giovanni Petrucciani, P. Hristov, O. Smirnova, M. Litmaath, L. Betev, A. Forti
2019 EPJ Web of Conferences  
With the planned addition of the tracking information in the Level-1 trigger in CMS for the High-Luminosity Large Hadron Collider (HL-LHC), the algorithms for the Level-1 trigger can be completely reconceptualized. Following the example for offline reconstruction in CMS to use complementary subsystem information and mitigate pileup, we explore the feasibility of using Particle Flow-like and pileup-per-particle identification techniques at the hardware trigger level. We present the challenges of
more » ... t the challenges of adapting these algorithm to the timing and resource constraints of the Level-1 trigger, the first prototype implementations, and the expected performance on physics object reconstruction.
doi:10.1051/epjconf/201921401019 fatcat:mek7ygf75rg4vlyr7w4k4woiji