1 / 10

Cluster Charge distribution(p+p)

Cluster Charge distribution(p+p). Use two samples : Hiroki's dimuon sample & ZeroFiled Run(36597,40321,40322) ClustData2 ntuple is used : a cut is applied to get real track stubs( a same cut is applied to all plots in this slide)

luella
Télécharger la présentation

Cluster Charge distribution(p+p)

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. Cluster Charge distribution(p+p) • Use two samples : Hiroki's dimuon sample & ZeroFiled Run(36597,40321,40322) • ClustData2 ntuple is used : a cut is applied to get real track stubs( a same cut is applied to all plots in this slide) • Show “Cluster width distribution” and “Landau peak values” for all clusters with the cut • Show “Cluster width distribution” and “Landau peak values” for 2 and 3 strip cluster with the cut • Results

  2. Applied Cut to get real track stubs • Cut ( ClustData2 ntuple ) • bbcvert>-1000 • (lastpl==4) (roadhits>=9 ) && (nroads==1||nroads==2) • one hit per plane • |atan(dx/dz)|<0.17 &&|atan(dy/dz)|<0.17

  3. Cluster width Distribution & Landau Peak value( I ) Slide6 Slide7 and 8 Pla0(ST1) Pla1(ST1) Pla3(ST1) Pla2(ST1) Red : Dimuon sample Blue : ZeroField Count Pla6(ST2) Pla4(ST1) Pla5(ST1) Pla12(ST3) Cluster width • All clusters after the following cut • Error bar : sigma from Landau fitting • Cut ( ClustData2 ntuple ) : no cluster width cut (bbcvert>-1000) && (lastpl==4) && (roadhits>=9 ) && (nroads==1||nroads==2) && (nhits1<=1 && nhits2<=1 && nhits3<=1 && nhits4<=1 && nhits5<=1 && nhits6<=1 )&&(abs(atan(pf2))<0.17&&abs(atan(pf4))<0.17) )

  4. Landau peak vs Plane # w.r.t cluster width(II) Slide10 Slide9 Blue : cluster width = 3 Red : cluster width = 2 Blue : cluster width = 3 Red : cluster width = 2 Hiroki's Dimuon Sample Zero Field • 2 and 3 strip clusters after the following cut • Error bar : sigma from Landau fitting • Cut ( ClustData2 ntuple ) (bbcvert>-1000) && (lastpl==4) && (roadhits>=9 ) && (nroads==1||nroads==2) && (nhits1<=1 && nhits2<=1 && nhits3<=1 && nhits4<=1 && nhits5<=1 && nhits6<=1 )&&(abs(atan(pf2))<0.17&&abs(atan(pf4))<0.17) )

  5. Results • A cut was applied to get real tracks stubs from ClustData2 ntuples • 2 strips clusters are dominant compared with 3 strips clusters • The gain in Station 3 is lower than the other stations • Landau peak values varies with regard to cluster width(2,3), those for 3 strip clusters are a little higher in ST1 and ST3, however much higher in ST2 • What is going on (?) • See the detail informations (Backup slides)(from slide6)

  6. Cluster width distribution Zero Field Hiroki's Dimuon Sample

  7. Cluster Charge(I) & Landau peak : Dimuon Sample ( (bbcvert>-1000) && (lastpl==4) && (roadhits>=9 ) && (nroads==1||nroads==2) && (nhits1<=1 && nhits2<=1 && nhits3<=1 && nhits4<=1 && nhits5<=1 && nhits6<=1 )&&(abs(atan(pf2))<0.17&&abs(atan(pf4))<0.17) ) No cluster width cut

  8. Cluster Charge(I) & Landau peak: ZeroField ( (bbcvert>-1000) && (lastpl==4) && (roadhits>=9 ) && (nroads==1||nroads==2) && (nhits1<=1 && nhits2<=1 && nhits3<=1 && nhits4<=1 && nhits5<=1 && nhits6<=1 )&&(abs(atan(pf2))<0.17&&abs(atan(pf4))<0.17) ) No cluster width cut

  9. Cluster charge (II) : Dimuon sample Cluster width = 3 Cluster width = 2

  10. Cluster charge (II) : Zero Field Run Cluster width = 2 Cluster width = 3

More Related