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Search for electroweak production of charginos in final states with two T leptons in pp collisions at root s=8 TeV

Title
Search for electroweak production of charginos in final states with two T leptons in pp collisions at root s=8 TeV
Author
김태정
Keywords
Hadron-Hadron scattering (experiments); Supersymmetry
Issue Date
2017-04
Publisher
SPRINGER
Citation
JOURNAL OF HIGH ENERGY PHYSICS, no. 4, Article no. 018
Abstract
Results are presented from a search for the electroweak production of supersymmetric particles in pp collisions in final states with two T leptons. The data sample corresponds to an integrated luminosity between 18.1 fb(-1) and 19.6 fb(-1) depending on the final state of T lepton decays, at root s = 8 TeV, collected by the CMS experiment at the LHC. The observed event yields in the signal regions are consistent with the expected standard model backgrounds. The results are interpreted using simplified models describing the pair production and decays of charginos or T sleptons. For models describing the pair production of the lightest chargino, exclusion regions are obtained in the plane of chargino mass vs. neutralino mass under the following assumptions: the chargino decays into third-generation sleptons, which are taken to be the lightest sleptons, and the sleptons masses lie midway between those of the chargino and the neutralino. Chargino masses below 420 GeV are excluded at a 95% confidence level in the limit of a massless neutralino, and for neutralino masses up to 100 GeV, chargino masses up to 325 GeV are excluded at 95% confidence level. Constraints are also placed on the cross section for pair production of T sleptons as a function of mass, assuming a massless neutralino.
URI
https://link.springer.com/article/10.1007%2FJHEP04%282017%29018https://repository.hanyang.ac.kr/handle/20.500.11754/113765
ISSN
1029-8479
DOI
10.1007/JHEP04(2017)018
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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