Performance and First Physics Results of the SVT Trigger at CDF II

TL;DR

The paper reports on the successful deployment and initial physics results of the Silicon Vertex Trigger (SVT) at CDF II, a novel trigger system that enhances B-physics studies by selecting displaced tracks with high precision.

Contribution

This work introduces the SVT trigger at CDF II, enabling real-time selection of long-lived heavy flavor particles with offline-like impact parameter resolution.

Findings

SVT is fully operational and performs close to its design specifications.

Triggering on displaced tracks increases B-physics data yields.

First physics results demonstrate the effectiveness of the SVT in hadron collider experiments.

Abstract

For the first time in a hadron collider, a novel trigger processor, the Silicon Vertex Trigger (SVT), allows to select the long-lived heavy flavor particles by cutting on the track impact parameter with a precision similar to that of the offline reconstruction. Triggering on displaced tracks has enriched the B-physics program by enhancing the B yields of the lepton-based triggers and opened up full hadronic triggering at CDF. After a first commissioning period, the SVT is fully operational, performing very closely to its design capabilities. System performance and first physics results based on SVT selected data samples are presented.