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Luo, Jingyu.
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Search for Long-lived Particles Decaying into Displaced Jets with the CMS Detector at the Large Hadron Collider.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Search for Long-lived Particles Decaying into Displaced Jets with the CMS Detector at the Large Hadron Collider./
作者:
Luo, Jingyu.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:
183 p.
附註:
Source: Dissertations Abstracts International, Volume: 81-05, Section: B.
Contained By:
Dissertations Abstracts International81-05B.
標題:
High temperature physics. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=22588692
ISBN:
9781687932938
Search for Long-lived Particles Decaying into Displaced Jets with the CMS Detector at the Large Hadron Collider.
Luo, Jingyu.
Search for Long-lived Particles Decaying into Displaced Jets with the CMS Detector at the Large Hadron Collider.
- Ann Arbor : ProQuest Dissertations & Theses, 2019 - 183 p.
Source: Dissertations Abstracts International, Volume: 81-05, Section: B.
Thesis (Ph.D.)--Princeton University, 2019.
This item must not be sold to any third party vendors.
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.
ISBN: 9781687932938Subjects--Topical Terms:
3192580
High temperature physics.
Subjects--Index Terms:
CMS
Search for Long-lived Particles Decaying into Displaced Jets with the CMS Detector at the Large Hadron Collider.
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