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Plot approval: b-jet trigger

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

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Plot approval: b-jet trigger

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  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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