# Don Primesh Anjana Kannangara

- Institution: CERN
- Department: Summer Student Lecture Programme General
- Speaker: Don Primesh Anjana Kannangara
- Year: 2025
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3023214)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Hello, my name is Primesh, and I have completed a Bachelor of Science (Honours) degree in Physics from the University of Colombo, Sri Lanka. I am currently participating in the CERN Summer Student Programme, working with the ATLAS experiment.

As part of my project, I am involved in the Tau Trigger efficiency measurement using the tag-and-probe method in Z→ττ events with 2024 data. My study focuses on evaluating the trigger efficiency and calculating the scale factors (SFs) for the tau25 trigger, using the offline medium working point..

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## Lectures

1. [Don Primesh Anjana Kannangara](https://invisiblenetwork.ai/learn/cern/3023214/51035676162c), 10 min (CERN's player)