Triggering new discoveries: Advancements in Real-Time Analysis for Expanding Physics Reach at LHCb
by
Dr. Brij Kishor Jashal (PPD)
→
Europe/London
R61 CR3 (RAL)
R61 CR3 (RAL)
Description
For LHCb Run3
and beyond, the first stage of the trigger, the High-Level Trigger 1
(HLT1), has been implemented on Graphic Processor Units (GPUs) and is
capable of reducing the visible collision rate from 30MHz to 1 MHz.
These triggers are designed to identify events that could be of
scientific interest and to discard events that are not relevant.
One alluring research avenue in particle physics is the study of
Long-lived particles (LLPs). Many interesting decay modes involve strange
particles with large lifetimes such as Λ or Ks. Exotic LLPs are also
predicted in many new theoretical models.
The selection and
reconstruction of these LLPs is a challenge. These particles can decay
far from the primary interaction vertex and are hard to select by the
trigger systems of the experiments and difficult to isolate from the SM
backgrounds.
In this seminar the Real Time Analysis paradigm and new trigger system of LHCb is
introduced. Some of the key reconstruction and selection algorithms,
which have been developed for highly parallel computing architectures,
are presented. How these algorithms are instrumental in the studies and
searches of LLPs from the SM and BSM are discussed.
