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Search for disappearing tracks in proton-proton collisions at √s = 13 TeV

Hart, Andrew Evan
http://orcid.org/0000-0003-2349-6582
http://rave.ohiolink.edu/etdc/view?acc_num=osu1517587469347379

Abstract Details

2018, Doctor of Philosophy, Ohio State University, Physics.
A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. A disappearing track is an isolated track with no associated hits in the muon detectors, small associated calorimeter energy deposits, and missing hits in the outer layers of the silicon tracker. The search uses 38.4 fb-1 of proton-proton collision data collected by the CMS detector in 2015 and 2016, at a center-of-mass energy of 13 TeV at the CERN LHC. The results of the search are interpreted in the context of anomaly-mediated supersymmetry breaking. The observation is consistent with the background-only hypothesis, and limits are set on the product of the cross section of direct chargino production and the branching fraction to a neutralino and a pion in terms of the chargino mass and lifetime. At 95% confidence level, charginos with masses less than 715 GeV are excluded for a lifetime of 3 ns.
Christopher Hill (Advisor)
Stanley Durkin (Committee Member)
Stuart Raby (Committee Member)
Gregory Lafyatis (Committee Member)
235 p.
Atoms and Subatomic Particles; Particle Physics; Physics
disappearing track; AMSB; anomaly-mediated supersymmetry; CMS; LHC; CERN; particle physics; high-energy physics; physics; chargino; long-lived particle; beyond the standard model; BSM; supersymmetry; hadron collider; particle collider; neutralino

Recommended Citations

Citations

  • Hart, A. E. (2018). Search for disappearing tracks in proton-proton collisions at √s = 13 TeV [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1517587469347379

    APA Style (7th edition)

  • Hart, Andrew. Search for disappearing tracks in proton-proton collisions at √s = 13 TeV. 2018. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1517587469347379.

    MLA Style (8th edition)

  • Hart, Andrew. "Search for disappearing tracks in proton-proton collisions at √s = 13 TeV." Doctoral dissertation, Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1517587469347379

    Chicago Manual of Style (17th edition)

osu1517587469347379
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© 2018, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.