Early 2018 High-Level Trigger rates (CMS DP-2018/057)

The rate results presented here are produced using rate evaluations for a 2018 HLT menu, which deployed online on the 6th of June.

Only HLT algorithms from the CMS physics data streams are considered in these plots.

The “Calibration” category corresponds to HLT algorithms in physics data streams that are used by CMS sub-detector groups, as well as the CMS “Alignment and Calibration” group. Some of these HLT algorithms are shared with physics object/analysis groups.

The “B2G” physics analysis group covers models of new physics featuring the decay of new resonances to heavy standard model objects.

HLT rates per physics group This figure represents the High-Level Trigger (HLT) rates consumed by each CMS physics group. The HLT menu version used for this figure was validated prior to its online deployment on 06th of June by evaluating its rates and CPU timing. The rates were evaluated by running the HLT menu on a commissioning data set. The latter consists in a fraction of events passing the Level-1 trigger, without any further HLT requirement. The average recorded instantaneous luminosity in the input data was 1.2 x 1034 cm2 s-1. All rates were scaled to 2.0 x 1034 cm2 s-1. A given physics group triggers the selection of an event if it owns at least one of the HLT algorithms that triggered the event. For each physics group, three types of rates are evaluated: Total: the rate from an event is assigned to all groups that trigger the event Shared: the rate from an event is shared equally among all groups that trigger the event Pure: the rate from an event is assigned to a given group if it is the only one that triggers the event. The “Calibration” category corresponds to all HLT algorithms used for sub-detector alignment and calibration purposes. All other categories correspond to physics objects and physics analysis groups. Note: the “B2G” group covers models of new physics featuring the decay of new resonances to heavy standard model objects. [Get pdf version] Contact: Nadir Daci

HLT rate allocation per physics group This figure represents the High-Level Trigger (HLT) rates consumed by each CMS physics group. This figure represents the High-Level Trigger (HLT) rates consumed by each CMS physics group. The HLT menu version used for this figure was validated prior to its online deployment on 06th of June by evaluating its rates and CPU timing. The rates were evaluated by running the HLT menu on a commissioning data set. The latter consists in a fraction of events passing the Level-1 trigger, without any further HLT requirement. The average recorded instantaneous luminosity in the input data was 1.2 x 1034 cm2 s-1. All rates were scaled to 2.0 x 1034 cm2 s-1. A given physics group triggers the selection of an event if it owns at least one of the HLT algorithms that triggered the event. The pie chart displays the rate allocation per physics group. Here, the rate from a given event is shared equally among all groups that trigger the event. The “Calibration” category corresponds to all HLT algorithms used for sub-detector alignment and calibration purposes. The “Objects” category gathers all physics object groups. All other categories correspond to physics analysis groups. Note: the “B2G” group covers models of new physics featuring the decay of new resonances to heavy standard model objects. [Get pdf version] Contact: Nadir Daci

-- ElisabettaGallo - 2018-10-10