1 / 11

MEC selection in NuWro

MEC selection in NuWro. Paweł Przewłocki, Warsaw Neutrino Group NIWG Premeeting 1, Tokai , Jan 2013. What it is about. We are preparing to try to select samples of MEC events ( generated by NuWro ) in ND280 tracker

soleil
Download Presentation

MEC selection in NuWro

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. MEC selection in NuWro Paweł Przewłocki, Warsaw Neutrino Group NIWG Premeeting 1, Tokai, Jan 2013

  2. Whatitisabout • We arepreparing to try to selectsamples of MEC events (generated by NuWro) in ND280 tracker • Thispresentationshowsourfirstideasbased on bare generator output (i.e. ND280MC was not involved) • As a next step, a full ND280 simulationwill be performed, and Wojtek Oryszczakispreparing to makeselectionusing FGD containedtracks

  3. Simulationsamples • 200.000 evts in threesamples (fullgeneration with MEC channel, threemodels: Marteau, Nieves, TEM) • Used Nuwro11j (from 2 weeks ago) • Target: carbon • ND280 nu_mubeam • Statistics: Onlyneutrinosup to 3 GeVaretakenintoaccount CCQE CCMEC CCRES CCDIS NC Sample with MEC: Marteau Enu [MeV]

  4. Selection and visibilitycuts • Most hadrons from oureventswill be contained in FGD • Visibilityassumptions for FGD: • protonsvisibleabove p=550 MeV/c • charged pions visibleabove p=200 MeV/c • Simple sampleselection: „CCQE-like” • one muon, no visiblecharged pions, no neutral pions • We separate the sampleintosignal (MEC) and background (others, mainly CCQE) usingMonteCarloinformation (interactiontype flag) CCQE CCMEC CCRES Sample with MEC: Marteau Enu [MeV]

  5. Thresholdmomentum for hadrons (prod5) • Protons and pions (Wojtek Oryszczak) – MC of neutrino interactions • Protons (Joanna Zalipska) - isotropicsample, with and w/o muons) pions protons protons

  6. Muon energy and angle shapecomparison shapecomparison Not showing TEM here-unphysicalshapebecause of fermimotion not takenintoaccount (Sampleselection: one muon, no neutral pions, no charged pions over 200 MeV/c) No significantdifferences

  7. Number of visibleprotons (Sampleselection: one muon, no neutral pions, no charged pions over 200 MeV/c) depends a lot on FSI !! realistic cut on proton momentum ambitious cut on proton momentum

  8. Visibleenergy of hadrons (Sampleselection: one muon, no neutral pions, no charged pions over 200 MeV/c) • Absolute • Normalized (shapecomparison) Here we sum kineticenergy of ALL hadrons (no momentumcuts) – somethinglikevertexactivity (PID not needed) Promisingvariable (largedifferencesbetween MEC modelsthough)

  9. Hadron energy vs energy transfer Marteau bg Chosen cut: Hadron energy>500 MeV Energy transfer<200 MeV Nieves

  10. Errors of neutrino energyreconstruction (CCQE formula) • delta=(Etrue-Ereco)/Etrue • Three plots for 0,1,2 protonsvisible (550MeV/c threshold) • Shapecomparison (Sampleselection: one muon, no neutral pions, no charged pions over 200 MeV/c)

  11. Summary • Someinterestingvariableshavebeenselected for furtherstudy • Full ND280MC simulationisplanned for NuWrosamples to test whatare the selectionpossibilities in the real detector environment

More Related