Search for long-lived particles decaying into displaced jets in proton-proton collisions at root s=13 TeV
- Title
- Search for long-lived particles decaying into displaced jets in proton-proton collisions at root s=13 TeV
- Author
- 김태정
- Keywords
- GLUINO PRODUCTION; SQUARK; SUPERSYMMETRY; HIGGS
- Issue Date
- 2019-02
- Publisher
- AMERICAN PHYSICAL SOCIETY
- Citation
- PHYSICAL REVIEW D, v. 99, NO 3, Page. 032011
- Abstract
- A search for long-lived particles decaying into jets is presented. Data were collected with the CMS detector at the LHC from proton-proton collisions at a center-of-mass energy of 13 TeV in 2016, corresponding to an integrated luminosity of 35.9 fb(-1). The search examines the distinctive topology of displaced tracks and secondary vertices. The selected events are found to be consistent with standard model predictions. For a simplified model in which long-lived neutral particles are pair produced and decay to two jets, pair production cross sections larger than 0.2 fb are excluded at 95% confidence level for a long-lived particle mass larger than 1000 GeV and proper decay lengths between 3 and 130 mm. Several supersymmetry models with gauge-mediated supersymmetry breaking or R-parity violation, where pair-produced long-lived gluinos or top squarks decay to several final-state topologies containing displaced jets, are also tested. For these models, in the mass ranges above 200 GeV, gluino masses up to 2300-2400 GeV and top squark masses up to 1350-1600 GeV are excluded for proper decay lengths approximately between 10 and 100 mm. These are the most restrictive limits to date on these models.
- URI
- https://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.032011https://repository.hanyang.ac.kr/handle/20.500.11754/108235
- ISSN
- 2470-0010; 2470-0029
- DOI
- 10.1103/PhysRevD.99.032011
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
- Search for long-lived particles decaying into displaced jets in proton-proton collisions at root s=13 TeV.pdfDownload
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