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Enhancing B-Jet Trigger Performance with Improved Per-Event Primary Vertex Estimation​

Join Viviana Cavaliere in the quest to boost b-jet trigger efficiency by leveraging per-event primary vertex estimation for better tagging performance. Explore the impact of 2012 enhancements on resolving primary vertices and tracking accuracy. Compare online PV accuracy with truth vertices through statistical analysis. Plot mean versus number of online tracks for in-depth insights.

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Enhancing B-Jet Trigger Performance with Improved Per-Event Primary Vertex Estimation​

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Presentation Transcript

  1. Plot approval: b-jet trigger Viviana Cavaliere for the b- jet trigger group

  2. Per-event PV estimation • In 2011 z of primary vertex was estimated within ROI • Among the improvements available for the 2012 run there is “per-event primary vertex estimation” • the tagger in 2012 exploits the IP along the z axis ⇒ this improvement directly affects the b-tagging performance

  3. Resolution on the primary vertex vsNtracks • Calculate the difference between the online PV (L2 or EF) and the truth vertex. • Fit the slices of tracks between -RMS and RMS • Plot mean vs Number of online tracks

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