testing neutrino masses in lhc
DESCRIPTION
Testing neutrino masses in LHC. Mait Müntel , Andi Hektor, Mario Kadastik, Liis Rebane, Martti Raidal National Institute of Chemical Physics and Biophysics. Joint seminar on cosmology and astroparticle-physics February 26th and 27th, Tartu Observatory. Phenomenology. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Testing neutrino masses in LHC](https://reader036.vdocuments.us/reader036/viewer/2022081419/56814ce2550346895db9e50a/html5/thumbnails/1.jpg)
Testing neutrino masses in LHC
Mait Müntel, Andi Hektor, Mario Kadastik, Liis Rebane, Martti Raidal
National Institute of Chemical Physics and Biophysics
Joint seminar on cosmology and astroparticle-physics February 26th and 27th, Tartu Observatory.
![Page 2: Testing neutrino masses in LHC](https://reader036.vdocuments.us/reader036/viewer/2022081419/56814ce2550346895db9e50a/html5/thumbnails/2.jpg)
Triplet Higgs may be needed to generate Majorana mases to left-hand neutrinos.
The neutrino mass matrix:
Phenomenology
Leptons are described by Lagrangian:
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Normal hierarchical light neutrino masses imply
Drell-Yan pair production and Higgs decay
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Detector hardware
![Page 5: Testing neutrino masses in LHC](https://reader036.vdocuments.us/reader036/viewer/2022081419/56814ce2550346895db9e50a/html5/thumbnails/5.jpg)
Detector hardware
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Transverse slice through CMS detector
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Detector is not ready yet
huge number of events
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MC generator (Pythia)
Detector simulation (CMSSW)
++ 4 ,jet
plus SM background
tt, ttZ, ZZ 4 ,jet
4 ´, jet´,
ETmiss
Detector is not ready yet – things are simulated
huge number of events
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MC level analysis
Data from detector: Npjet , ETmiss
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Selection rules
S0 – < 2.4
S1 – 2 + and 2 - muons or jets
S2 – PT
S3 – Z-tagging
S4 – m++ / m–
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Monte Carlo results
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Monte Carlo results
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Thank You