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1 HLT (generic) Data TDR DaVinci v9r3 DC04 DaVici v12r0 DC04 DaVici v12r1 Outlook! # of track candidates!!! Comparation DC04 & TDR data L1 does a better job now! Results of the L1 generic Hadronic line fine! The vertex is gaining us something!? The “calorimeter” line in progress The “muon” line in progress HLT (generic) Jose A. Hernando, Frederic Teubert (27/9/04) status report
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2 HLT generic About HLT: Algorithms: Tracking Velo 3D Matching Velo tracks with muon stations Work in progress in the muon line Select a PV and candidates: Candidates tracks [0.1,3] mm of |IP| Velo-TT and Long Tracking of the candidates Compute variables –L1confirmation = log(pt0)+log(pt1) (2 highest pt tracks) –Z-flight distance: secondary vertex with the 4 th highest PT tracks About the code: v1r0 (for DaVinci v12r0) using l1-generic ready to commit V2r1 (for DaVinci v12r1): [in other words L1 muon line] “almost” ready.
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3 # of tracks candidates Eff vs retention # tracks: (uppss! We send a wrong message!) One track to one vertex (IP smaller) Before all tracks to the same Pvertex The # of candidates is 10 in DC04 On1y ONE PV DC04
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4 # of tracks TDR DC04
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5 Time of HLTGeneric KHz Algorithms: Decode: (Velo,TT,(ST+OT); Tracking: Velo3D, PV, VeloTT, LongTracking Selection: PV, Matching L0, Decision Time 23 ms [20 ms] (3.3,3.8 ms at 07’) => t_specific = (11-3.8)*(40/10) = 29 ms Tracking time Entry ~70 events minbias L0L1
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6 # of candidates and vertices Z distance vs log(pt1*pt2) Candidates & vertices DC04: less candidates tracks DC04: Less multi primary vertices events! Cleaner! # of Primary Vertices# of long track candidates
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7 Quark contents KHz Ud, c, b content Quark content after L1 DC04: From 4 to 6 KHz of b’s B-enriched min-bias! L1 performs better!
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8 L1-confirmation & Dz for mim bias Variables (mim bias) DC04: harder l1-confimation events (better L1) DC04: slightly shifted dz to the right More b’ contents L1-conf Dz (second-first) mim bias [mm]
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9 L1confirmation: mim bias & signal DC04 TDR
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10 Dz: mim bias and signal DC04 TDR
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11 l1confirmation: eff vs ret DC04TDR L1confirmation Works fine!, a little bit worse B-events are on the right of the curve: few KHz extra => few HKz less rejection L1 without muon line
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12 B-content: l1 confirmation DC04 TDR B-content (l1confirmation) We pass from 50% to 60% in DC04!
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13 Efficiency vs l2-variable DC04TDR L1confirmation+bonus+delta_z We need to split a line for the “calorimeter” triggers: (revisit) Vertex gain little… so we keep it in mind, use monstly l1confirmation (simple)
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14 Efficiency vs l2-variable DC04 TDR
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15 HLT generic: L1 with muon line L1 v3r0 (muon line) L1-confirmation fine (with z-flight similar to the previous DC04) L1 with muon line
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16 Conclusion & Plans About HLT: Generic code: ready to commit [v1r0,v2r0] HLT-generic is working fine >90% at 10 KHz L1 now is better: Higher b content (~3 KHz more) Harder pt mim-bias events Less multi-primary vertex events More studies: “Calorimeter” line: bonus l1conf += f(Et) “Muon” line: work with Alessia Improve the vertex rejection ore keep it as optional! All studies with L1 with muon line “DST” ready to be analyzed…
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