1 / 5

Embedding Production 1 st Prod

Embedding Production 1 st Prod. 03/18/2011. First Production. MuKpi used for 1 st Production was ran over the embedding sample at /eliza15/star/starprod/embedding/2007ProductionMinBias/D0*/*/*. MuDst.root (all D0 files) (/eliza14/star/pwg/starhf/jjoseph4/FirstProd/)

jiro
Télécharger la présentation

Embedding Production 1 st Prod

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. Embedding Production1st Prod 03/18/2011

  2. First Production • MuKpi used for 1st Production was ran over the embedding sample at /eliza15/star/starprod/embedding/2007ProductionMinBias/D0*/*/*.MuDst.root (all D0 files) (/eliza14/star/pwg/starhf/jjoseph4/FirstProd/) The cut set failed to produce a peak in the Inv.mass plot

  3. Cuts Relaxed An earlier run with no silicon hit requirement described in the following page shows that applying a cut SiHits>2 can destroy the signal. http://www.star.bnl.gov/~jai2006/jjoseph/21stDecember2010_NewEmbeddingPlots.htm The cuts values I used here and those used in 1st production are as below: (Red letters in parenthesis is the cut used in real data – First Production) |ZVertex| < 10 SigmaZVrtx < 200um pT > 0.1 GeV/c( > 0.5GeV/c) p > 0.1 GeV/c ( > 0.5GeV/c) No requirement on Si hits ( > 2) TpcHits > 20 (same) |eta| < 1 (same) dEdxTrackLength > 40cm (same) DCA_XY < 0.1cm (same) Probability > 0.01(> 0.1) |slength|<0.1 (same) dEdx: |nSigma|<2.5 (<2) I applied the following cuts offline one by one to see the effect of the cut on the signal significance. pT, p >0.5GeV/c SiHits > 2 Probability > 0.1 |nSigma| < 2

  4. Inv. Mass with SiHit>1 Offline cut: SiHit>1 S/B ~ 5.26

  5. Inv Mass with cuts similar to 1st Prod, but with SiHits>1 Offline cut: SiHit>1 pT, p > 0.5 Probability> 0.1 |nSigma|<2 S/B ~ 4.054 Should we run MuKpi with 1st Production cuts with SiHits>1 instead of SiHits>2 on embedding data?

More Related