bluebeam, keystone & miniskirt and trigger efficiency study
DESCRIPTION
Bluebeam, Keystone & Miniskirt and Trigger Efficiency Study. Ye Li Physics Graduate Student UW - Madison. Updated datasets. Datasets: bhmubd bhmubh bhmubi bhmubj bmubbd bmubbh bmubbi Bmubbj Not much gain by loosening cuts. The three histograms are: no trigger required - PowerPoint PPT PresentationTRANSCRIPT
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Bluebeam, Keystone & Miniskirt and Trigger Efficiency Study
Ye LiPhysics Graduate Student
UW - Madison
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Updated datasets• Datasets:
– bhmubd– bhmubh– bhmubi– bhmubj– bmubbd– bmubbh– bmubbi– Bmubbj
• Not much gain by loosening cuts
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• The three histograms are:– no trigger required
• total entries: 104145
– CMUP18 or CMX18 on• total entries: 101893
– CMUP18, CMX18 or L3BMU on• total entries: 102287
• Still fewer than 1% additional events in the entire bhmubd~bj + bmubbd~bj datasets
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• Trigger Path: BMU9_L1_BMU10_BSU_P11
• Entries: 1897
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• The above: bhmubd + bmubbd
• The bottom: bhmubh + bmubbh
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• The above: bhmubi + bmubbi• The bottom: bhmubj + bmubbj
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Bluebeam, Miniskirt and Keystone
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• Total entries: 104145– No Bluebeam: 102841– No Miniskirt: 96510– No Keystone: 102252– Without all three regions: 93365
• Gain from bluebeam, miniskirt and keystone regions ~12%
• Gain most from Miniskirt ~8%
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Trigger Efficiency for B M K regions
• Use Z-muon events with run number >186598
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Trigger Efficiency Summary• 1. Z Muons, with one leg as CMUP muon, passi
ng CMUP18 trigger, and the other as Miniskirt or Keystone muon; CMX18 trigger efficiency:– Miniskirt (total: 2663) trigger efficiency: 1653/2663 = 0.
620728+-0.00940244– Keystone (total: 752) trigger efficiency: 569/752 = 0.7
56649+-0.0156479
• 2. Z Muons, with one leg as CMX muon, passing CMX18 trigger, and the other as Miniskirt or Keystone muon; CMUP18 trigger efficiency:– Bluebeam (total: 91) trigger efficiency: 91/91 = 1+-0 (c
alculation not valid here)
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Trigger Efficiency Summary• 3. Z Muons, with one leg as CMUP muon, havin
g no trigger requirement and the other as Miniskirt or Keystone Muon; CMX18 trigger efficiency:– Miniskirt (total: 2667) trigger efficiency: 1657/2667 = 6
21297+-0.00939263– Keystone (total: 753) trigger efficiency: 570/753 = 0.7
56972+-0.0156304
• 4. Z Muons, with both legs as CMUP muons, passing CMUP18 trigger, and one or both are Bluebeam muons; Entries: 333
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Next Step• Use MC Z->mumu datasets: ze1s6m, ze1
s9m, ze0sbm, ze0scm, ze0sdm, ze0sem;• Study the efficiency of Muon identification
using MC data (plotting its Pt distribution), and focus mainly on E_em and E_had cuts;
• Study MC fake events by our own simulation. Use present MC datasets to implement the detector geometry information on our generated events.
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• Thanks!