Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at root s = TeV
- Title
- Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at root s = TeV
- Author
- 김태정
- Keywords
- Beyond Standard Model; Hadron-Hadron scattering (experiments)
- Issue Date
- 2019-01
- Publisher
- SPRINGER
- Citation
- JOURNAL OF HIGH ENERGY PHYSICS, NO 1, Page. 122
- Abstract
- A search is performed for a heavy Majorana neutrino (N), produced in leptonic decay of a W boson propagator and decaying into a W boson and a lepton, with the CMS detector at the LHC. The signature used in this search consists of two same-sign leptons, in any flavor combination of electrons and muons, and at least one jet. The data were collected during 2016 in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). The results are found to be consistent with the expected standard model background. Upper limits are set in the mass range between 20 and 1600 GeV in the context of a Type-I seesaw mechanism, on |V-eN|(2), |V-N|(2), and |VeNV *|(2)/(|V-eN|(2)+|V-N|(2)), where V-N is the matrix element describing the mixing of N with the standard model neutrino of flavor = e, . For N masses between 20 and 1600 GeV, the upper limits on |V-N|(2) range between 2.3 x 10(-5) and unity. These are the most restrictive direct limits for heavy Majorana neutrino masses above 430 GeV.
- URI
- https://link.springer.com/article/10.1007%2FJHEP01%282019%29122https://repository.hanyang.ac.kr/handle/20.500.11754/107953
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP01(2019)122
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
- Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at root s = TeV.pdfDownload
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