1 / 8

Ratio mu+/mu- & muon reco studies on CRAFT data

Ratio mu+/mu- & muon reco studies on CRAFT data. Status update, 6 Nov 2008. A.Calderon, INFN Padova & Ministerio de Educacion Y Ciencia, Spain F. Cavallo, INFN Bologna U.Gasparini, Universita’ di Padova & INFN Padova A.Gresele, INFN Padova & Univ. di Trento

josie
Download Presentation

Ratio mu+/mu- & muon reco studies on CRAFT data

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ratio mu+/mu- & muon reco studies on CRAFT data Status update, 6 Nov 2008 A.Calderon, INFN Padova & Ministerio de Educacion Y Ciencia, Spain F. Cavallo, INFN Bologna U.Gasparini, Universita’ di Padova & INFN Padova A.Gresele, INFN Padova & Univ. di Trento A.Meneguzzo, Universita’ di Padova & INFN Padova

  2. Intro statistics in CRAFT is not an issue: - Concentrate on variuos aspects of systematics: - perform different tracks selection, with loose/tight criteria on track topology/quality • study/keep control of momentum resolution, charge identification • Test stability of results against different runs, triggers, detector • data quality… - Work on going… some examples on following slides…

  3. Example of DT-DQM certified good run Run 67838 good DT calibration, DT local trigger efficiency Missing DDU-trigger data in Wheel+1; data available anyway from trigger DCC

  4. “2 legs” STA muons Run 67838 5.3 M events analyzed (~ 15% of total triggers) cut DT segment multiplicity associated hits to m tracks StandAlone muons 1,7 M with Nlegs>1 1st leg 460,000 STA pairs difference in Z-impact parameter Dz, both legs with Nhit>30 |Dz| < 20 cm spT/pT~38% 2nd leg

  5. STA muons 460,000 muon tracks Nhit>30 in both legs STA azimuth angle @ perigee 15,000 associated with Tracker track

  6. 1 leg STA tracks vs Tracker tracks spT/pT~18% spT/pT~22% spT/pT~25% Tracker track 1 leg STA Track, Nhit > 60

  7. Mu+/mu- ratio: 1st look Using “one leg” STA Tracks with Nhit > 60 unphysical tail… 11,000 tracks (this corresponds to ~2% of total CRAFT statistics) uncorrected for charge mis-identification

  8. Stability: another run ( 66783 )

More Related