1 / 16

Calorimeter PIDs Vanya Belyaev, Ioury Gouz, Vladimir Romanovsky, Grygory Rybkin

Calorimeter PIDs Vanya Belyaev, Ioury Gouz, Vladimir Romanovsky, Grygory Rybkin. Vanya Belyaev CERN & ITEP/Moscow. e + /e - PIDs EcalPIDe derived from c 2 match PrsPIDe derived from energy deposition in Prs BremPIDe derived from brem c 2 match HcalPIDe

beata
Download Presentation

Calorimeter PIDs Vanya Belyaev, Ioury Gouz, Vladimir Romanovsky, Grygory Rybkin

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. Calorimeter PIDsVanya Belyaev, Ioury Gouz, Vladimir Romanovsky, Grygory Rybkin Vanya Belyaev CERN & ITEP/Moscow

  2. e+/e- PIDs EcalPIDe derived from c2 match PrsPIDe derived from energy deposition in Prs BremPIDe derived from brem c2 match HcalPIDe derived from energy deposition in Hcal along the particle trajectory m+m- PIDs HcalPIDmu Derived from energy deposition in Hcal along particle trajectory EcalPIDmu Derived from energy deposition in Ecal along particle trajectory g/p0 PIDs CaloMatch ShowerShape SpdPrs ClusterMass Calorimeter Particle ID techniques Vanya Belyaev CERN & ITEP/Moscow

  3. Technique • All PIDs evaluate DLL • difference in log-likelihoods between the particle hypothesis and the “background” • The “measurable” value (e.g. c2 or EPrs) is converted into DLL by comparison with “reference” distributions for “Signal” and “Background” • Signal • The associated MC particle has “correct” type • Background • The associated MC particle has “wrong” type • Background does not include “ghosts” • Momentum dependencies are taken into account Vanya Belyaev CERN & ITEP/Moscow

  4. Start from c2 “ElectronMatch” Select minimal c2 for given TrStoredTrack Produce 2D reference distributions for large reference data sets 800k for channels & b-inclusive tanh(c2/100) versus tanh(p/50 GeV/c) Normalize reference distributions to 1 in each bin on “momentum” Make a ratio of normalized distributions for “signal” and “background” Take a (natural) logarithm of this ratio The resulting histogram is used for evaluation of DLL: EcalPIDe EcalPIDe - procedure Vanya Belyaev CERN & ITEP/Moscow

  5. EcalPIDe Raw distributions for 800k events e+/e- h/m ghosts e+/e- h/m ghosts tanh(p/50 GeV/c) tanh(c2/100) Vanya Belyaev CERN & ITEP/Moscow

  6. EcalPIDe Raw distributions for 800k events e+/e- tanh(c2/100) tanh(c2/100) tanh(p/50 GeV/c) tanh(p/50 GeV/c) Vanya Belyaev CERN & ITEP/Moscow

  7. EcalPIDe Normalized distributions e+/e- tanh(c2/100) tanh(c2/100) tanh(p/50 GeV/c) tanh(p/50 GeV/c) Vanya Belyaev CERN & ITEP/Moscow

  8. EcalPIDe Results and performance e+/e- h/m ghosts DLL tanh(c2/100) DLL tanh(p/50 GeV/c) Vanya Belyaev CERN & ITEP/Moscow

  9. PrsPIDe Results and performance DLL e+/e- h/m ghosts tanh(EPrs/100 MeV) DLL tanh(p/50 GeV/c) DLL Vanya Belyaev CERN & ITEP/Moscow

  10. BremPIDe Results and performance DLL e+/e- h/m ghosts tanh(cBrem2/200) DLL tanh(p/50 GeV/c) Vanya Belyaev CERN & ITEP/Moscow

  11. HcalPIDe Results and performance DLL e+/e- h/m ghosts tanh(EHcal/5 GeV) DLL tanh(p/50 GeV/c) Vanya Belyaev CERN & ITEP/Moscow

  12. m+/m-ID EHcal/EEcal spectra m+/m- h/e ghosts m+/m- h/e ghosts tanh(EEcal/5 GeV) tanh(EHcal/10 GeV) Vanya Belyaev CERN & ITEP/Moscow

  13. HcalPIDm Results and performance DLL m+/m- h/e ghosts tanh(EHcal/10 GeV) DLL DLL DLL tanh(p/25 GeV/c) Vanya Belyaev CERN & ITEP/Moscow

  14. EcalPIDm Results and performance DLL m+/m- h/e ghosts tanh(EEcal/5 GeV) tanh(p/25 GeV/c) DLL Vanya Belyaev CERN & ITEP/Moscow

  15. Calorimeter PIDs New package Calo/CaloPIDs v1r0 6 different PID techniques 4 techniques for e+/e- ID 2 techniques for m+/m- ID All information is available in DaVinci Reference histograms could be updated To be done Combine all information to produce CaloPIDefor e+/e- ID CaloPIDmform+/m- ID Work ong/p0 PID (intermediate) summary Vanya Belyaev CERN & ITEP/Moscow

  16. Sum CaloPIDs in a blind way: Results and performance (no RICH, no Muon, only Calo) e+/e- h/m ghosts m+/m- h/e ghosts DLL(e+/e-)-combined DLL(m+/m-) combined Vanya Belyaev CERN & ITEP/Moscow

More Related