Plot approval b jet trigger
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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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Plot approval b jet trigger

Plot approval: b-jet trigger

Viviana Cavaliere for the b- jet trigger group


Per event pv estimation

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


Resolution on the primary vertex vs ntracks

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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