A study of tau identification with the CMS detector at the LHC
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2009
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| Online Access: | http://hdl.handle.net/1721.1/44796 |
| _version_ | 1811087371214520320 |
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| author | Ilten, Philip James |
| author2 | Christoph M. E. Paus. |
| author_facet | Christoph M. E. Paus. Ilten, Philip James |
| author_sort | Ilten, Philip James |
| collection | MIT |
| description | Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008. |
| first_indexed | 2024-09-23T13:45:01Z |
| format | Thesis |
| id | mit-1721.1/44796 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T13:45:01Z |
| publishDate | 2009 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/447962019-04-12T09:17:47Z A study of tau identification with the CMS detector at the LHC Ilten, Philip James Christoph M. E. Paus. Massachusetts Institute of Technology. Dept. of Physics. Massachusetts Institute of Technology. Dept. of Physics. Physics. Large Hadron Collider (France and Switzerland) Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008. Includes bibliographical references (p. 49-50). In this thesis I explore the identification of [tau] leptons from simulated reconstructed data that will be collected by the Compact Muon Solenoid (CMS) detector on the Large Hadron Collider (LHC) at CERN. The two components of particle identification, efficiencies of [tau] identification from generator level information, along with fake rates of the current default algorithm have been determined and analyzed for a photon plus jets background sample and QCD background sample. I propose a new [tau] lepton identification algorithm that employs a signal cone parametrized with respect to the 7 transverse energy, and an isolation cone parametrized with respect to charged particle density surrounding the [tau] jet. Using the default algorithm an efficiency of 27.7% is achieved along with a photon plus jets fake rate of 1.96%. Using the proposed algorithm and matching the efficiency of the default algorithm, an efficiency of 26.9% and a fake rate of 0.44% is achieved. Approximately matching fake rates, an efficiency of 37.4% is achieved with a fake rate of 2.36%. by by Philip James Ilten. S.B. 2009-03-16T19:44:15Z 2009-03-16T19:44:15Z 2008 2008 Thesis http://hdl.handle.net/1721.1/44796 300314662 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 50 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. Large Hadron Collider (France and Switzerland) Ilten, Philip James A study of tau identification with the CMS detector at the LHC |
| title | A study of tau identification with the CMS detector at the LHC |
| title_full | A study of tau identification with the CMS detector at the LHC |
| title_fullStr | A study of tau identification with the CMS detector at the LHC |
| title_full_unstemmed | A study of tau identification with the CMS detector at the LHC |
| title_short | A study of tau identification with the CMS detector at the LHC |
| title_sort | study of tau identification with the cms detector at the lhc |
| topic | Physics. Large Hadron Collider (France and Switzerland) |
| url | http://hdl.handle.net/1721.1/44796 |
| work_keys_str_mv | AT iltenphilipjames astudyoftauidentificationwiththecmsdetectoratthelhc AT iltenphilipjames studyoftauidentificationwiththecmsdetectoratthelhc |