Eur. Phys. J. C (2005) 40: 1-13
https://doi.org/10.1140/epjcd/s2005-02-001-5

Scientific Note

The efficiency of the CMS Level-1 Triggerfor supersymmetric events

¹ KFKI Research Institute for Particle and Nuclear Physics, Konkoly T. M. út. 29-33, 1121, Budapest, Hungary
² Institute for High Energy Physics of the Austrian Academy of Sciences, Nikolsdorfergasse 18, 1050, Vienna, Austria

^* e-mail: Claudia.Wulz@cern.ch

Abstract

The performance of the CMS Level-1 Trigger for supersymmetric events at an LHC luminosity of 2 x 10³³ cm^-2s^-1 is reviewed. Energy and momentum trigger thresholds have been chosen to yield a maximum Level-1 output rate of 50 kHz, within a safety factor of three. The Level-1 trigger efficiencies for the majority of the channels studied are found to be greater than 90%, which provides a good basis for the High-Level Trigger, where more stringent conditions are applied. Reasons for occasional lower efficiencies are given.