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020 ▼a 9781687932938
035 ▼a (MiAaPQ)AAI22588692
040 ▼a MiAaPQ ▼c MiAaPQ ▼d 247004
0820 ▼a 537.22
1001 ▼a Luo, Jingyu.
24510 ▼a Search for Long-lived Particles Decaying into Displaced Jets with the CMS Detector at the Large Hadron Collider.
260 ▼a [S.l.]: ▼b Princeton University., ▼c 2019.
260 1 ▼a Ann Arbor: ▼b ProQuest Dissertations & Theses, ▼c 2019.
300 ▼a 183 p.
500 ▼a Source: Dissertations Abstracts International, Volume: 81-05, Section: B.
500 ▼a Advisor: Marlow, Daniel R.
5021 ▼a Thesis (Ph.D.)--Princeton University, 2019.
506 ▼a This item must not be sold to any third party vendors.
520 ▼a The existence of long-lived particles is very generic in many beyond standard model scenarios. A search for long-lived particles decaying into jets is presented in this dissertation. 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. The search is sensitive to a wide range of models predicting long-lived particles decaying into displaced jets. 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.
590 ▼a School code: 0181.
650 4 ▼a High temperature physics.
690 ▼a 0597
71020 ▼a Princeton University. ▼b Physics.
7730 ▼t Dissertations Abstracts International ▼g 81-05B.
773 ▼t Dissertation Abstract International
790 ▼a 0181
791 ▼a Ph.D.
792 ▼a 2019
793 ▼a English
85640 ▼u http://www.riss.kr/pdu/ddodLink.do?id=T15493112 ▼n KERIS ▼z 이 자료의 원문은 한국교육학술정보원에서 제공합니다.
980 ▼a 202002 ▼f 2020
990 ▼a ***1008102
991 ▼a E-BOOK