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Search for weakly-produced supersymmetry in same-sign di-lepton final state at the square root ofs = 8 TeV with the ATLAS detector / Hines, Elizabeth J.
- Format:
- Book
- Thesis/Dissertation
- Author/Creator:
- Hines, Elizabeth J., author.
- Language:
- English
- Subjects (All):
- High energy physics.
- 0798.
- Local Subjects:
- High energy physics.
- 0798.
- Genre:
- Academic theses.
- Physical Description:
- 1 electronic resource (166 pages)
- Contained In:
- Dissertation Abstracts International 77-01B(E).
- Place of Publication:
- Ann Arbor : ProQuest Dissertations & Theses, 2015.
- Language Note:
- English
- Summary:
- A search for weakly-produced Chargino1, Neutralino2 supersymmetric particles decaying to two final state electrons or muons with the same electric charge is presented. The analysis is performed on 20.3fb-1 of integrated luminosity collected in 2012 with the Atlas Detector at the Large Hadron Collider, running at √s = 8 TeV. Pairs of like-sign leptons are collected and discriminated against background using Boosted Decision Trees trained on compressed supersymmetric simplified models. No significant excesses above background expectations are observed. The 95% confidence limits are placed on Chargino1 Neutralino2 pairs decaying via W and Z bosons and via intermediate sleptons with two different assumptions on the relative slepton mass. In the most optimistic scenarios considered, Chargino1 below 410 GeV are excluded assuming a massless LSP. In the compressed scenario, Chargino1 20 GeV. Results from this analysis are also combined with those from a complementary search in the three lepton final state.
- Notes:
- Source: Dissertation Abstracts International, Volume: 77-01(E), Section: B.
- Advisors: Evelyn J. Thomson Committee members: Joseph Kroll; Burt Ovrut; Masao Sako; Hugh Williams.
- Ph.D. University of Pennsylvania 2015.
- Local Notes:
- School code: 0175
- ISBN:
- 9781339050508
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